kva 2402 102 na 29 - eurotronix · 9. high accuracy ... 14 no mechanical damage. ... (pine alpha tm...

MARKING

The signal transmission rate of personal computer peripheral devices and digital devices as represented by USB2.0 devices is being

increased year by year, and countermeasures against ESD are critical in high-frequency bands. We have developed Type KVA

Surge Absorber to protect the circuits of various electronic devices sensitive to ESD.

Since the surge absorber has a low capacitance of 0.08 pF, it is applicable to high-speed signal lines.

The ecology design of Type KVA is environmentally friendly because of Lead-free and Halogen-free.

The product is suitable for elimination of ESD on high-speed signal lines that may be affected by signal waveform deformation.

(USB2.0, USB3.0, IEEE1394, HDMI interfaces, SCSI ports, antenna lines, etc.)

1. Usable on high-speed signal lines

2. Low capacitance (size 1005 : 0.06pF typ.)

3. Large ESD endurance and high insulation resistance

4. No polarity. Protection of circuit against ESD from both directions

5. Ultra-small size : 1005 (1.0 × 0.5 × 0.35 mm), 1608 (1.6 × 0.8 × 0.5 mm)

6. Suitable for automatic mounting by chip placer

7. Precise dimensions allows high-density mounting and symmetrical construction of terminal provide “Self-Alignment”.

8. Resistance to soldering heat : Reflow or flow soldering 10 seconds at 260°C

9. High accuracy carrier tape by using pressed pocket ensures excellent mounting.

10. Lead-free and RoHS Compliant

Item Ratings

Category Temperature Range – 40~+125°C

Rated Voltage 24 VDC

Trigger Voltage 1000V max. (650V typ.)

Clamp Voltage 200V max. (100V typ.)

Capacitance size 1005：0.1pF max. (0.06pF typ.)

size 1608：0.2pF max. (0.08pF typ.)

KVA 2402 102 NA 29

Type code

Rated voltage code Trigger voltage code Package style code

Case code

Surge Absorber

(for ESD Elimination)

Code : Rated voltage

2402 : 24V

Code : Trigger voltage

102 : 1000V

Packaging type

NA : φ180 Reel

Code : Case size

07 : 1.0 × 0.5

29 : 1.6 × 0.8

〔size 1005〕〔size 1608〕

Main body：Alumina ceramic Terminal：Tin plating (mm)

Case size Case code L W T max P

1005 07 1.00±0.05 0.50±0.05

0.35 0.20±0.1

1608 29 1.60±0.1 0.80±0.1

0.50 0.30±0.2

Code Rated voltage Trigger voltage

24 VDC 1000 V max.

FEATURES

DIMENSIONS

RATING

ORDERING INFORMATION

OUTLINE ( TYPE KVA )

APPRICATION

Ｐ

Ｔ

Ｌ

Ｗ

Ｐ

Ｗ

Ｗ

Ｔ

ＰＰ

ＬＷ

1

Name Material

Micro gap Copper

Body Alumina ceramic

Protective coat Silicone resin

Terminal Tin plating

(mm)

Size 1005 Size 1608

a 0.4 1.0

b 0.5 1.2

c 0.6 1.0

Glass epoxy on one side

Board thickness：1.6 mm

Copper layer：35m

When mounted in parallel with the elements to be protected, such as ICs, between the

elements and GND, Type KVA suppresses ESD applied to the elements and prevents

malfunction and breaking.

Case size Size a

1005 0.6

1608 1.2

CONSTRUCTION

STANDARD TEST BOARD

RECOMMENDED PAD DIMENSIONS

100 mm

33 mm

5 mm

a mm

STAFIC SUPPRESSION -Example of ESD Elimination-

Surge Absorber absorbs and suppresses static electricity.

(mm)

Original ESD waveform at 1 kV

-200

0

200

400

600

800

1000

1200

0 20 40 60 80 100 120 140 160 180 200

Times（ns）

Vo

lts（

V）

Absorbed ESD waveform at 1 kV when KVA is used

-200

0

200

400

600

800

1000

1200

0 20 40 60 80 100 120 140 160 180 200

Times（ns）

Volts（

V）

Static Electricity

Simulator

Oscillo-

scope

IC

(１MΩ)

Static Electricity

Simulator

KVA Oscillo-

scope

IC

(１MΩ)

Body

Protective coating

Micro gap

Terminal

2

No. Item Performance Test method

1 Trigger voltage Shall not exceed 1000 V. Contact discharging conforming to IEC61000-4-2

Tester capacity：150 pF/Resistance：330 Ω

2 Clamp voltage Shall not exceed 200 V. Contact discharging conforming to IEC61000-4-2

Tester capacity：150 pF/Resistance：330 Ω Test voltage：8 kV (level 4)

3 Capacitance size 1005：Shall not exceed 0.1pF.

size 1608：Shall not exceed 0.2pF. Measuring frequency ：1 MHz Measuring voltage：1 V

4 Leakage current Shall not exceed 1 nA. Test voltage: 6V

5 Insulation resistance Shall exceed 1 MΩ. Resistance between terminals.

6

Electrode strength (Bending)

No mechanical damage. Shall meet specification of trigger voltage and the insulation resistance.

Board supporting width：90 mm Bending speed：Approx. 0.5 mm/sec. Duration：30 sec. Bending：3 mm

7

Shear test No mechanical damage. Shall meet specification of trigger voltage and the insulation resistance.

Applied force：size 1005 10 N (1.02 kgf) size 1608 20 N (2.04 kgf)

Duration：10 sec. Tool：R0.5 Direction of the press：side face

8

Substrate bending test No mechanical damage. Shall meet specification of trigger voltage and the insulation resistance.

Supporting dimension：size 1005 0.5 mm size 1608 0.8 mm

Applied force：size 1005 5 N (0.51 kgf) size 1608 10 N (1.02 kgf)

Tool：R0.5 Direction of the press：thickness direction of product.

9

Solderability (Solder Wetting time)

Solder Wetting time : within 3sec. Solder：Sn–3Ag–0.5Cu Temperature：245 ± 3 meniscograph method

Solder：JISZ3282 H60A, H60S, H63A Temperature：230 ± 2 meniscograph method

10

Solderability (new uniform coating of solder)

The dipping surface of the terminals shall be covered more than 95% with new solder.

Solder：Sn–3Ag–0.5Cu Temperature：245 ± 3 Dipping：3sec.

Solder：JISZ3282 H60A, H60S, H63A Temperature：230 ± 2 Dipping：3sec.

11

Resistance to soldering heat

Marking shall be legible. No mechanical damage. Shall meet specification of trigger voltage and the insulation resistance.

Dipping (1 cycle) Preconditioning：100 ~ 150, 60 sec. Temperature：265 ± 3/6 ~ 7 sec.

Reflow soldering (2 cycles) Preconditioning：1 ~ 2 min, 180 or less Peak：250 ± 5°C, 5 sec. Holding：230 ~ 250, 30 ~ 40 sec. Cooling：more than 2 min.

Manual soldering Temperature：350 ± 10 Duration：3 ~ 4 sec. Measure after 1 hour left under room temp. and humidity.

12

Solvent resistance Marking shall be legible. No mechanical damage. Shall meet specification of trigger voltage and the insulation resistance.

Dipping rinse Solvent：Isopropyl alcohol Duration：90 sec.

13

ESD endurance No mechanical damage. The resistance between terminals shall be 1 MΩ or more, and the trigger voltage shall be met.

Conforming to IEC61000-4-2 Tester capacity：150pF / Resistance : 330 Ω Test voltage：It depends below.(level 4) 1000 cycles

Case size Contact discharge Air discharge

1005 8kV 8kV

1608 8kV 15kV

14 Vibration No mechanical damage.

Shall meet specification of trigger voltage and the insulation resistance.

Frequency range：10 ~ 55 ~ 10 Hz/min. Vibration amplitude：1.5 mm. Duration：2 hours in each of XYZ directions (total : 6 hours)

15 Shock No mechanical damage.

Shall meet specification of trigger voltage and the insulation resistance..

Peak value：490 m/s2 (50 G)

Duration：11 msec. 6 aspects × 3 times (total : 18 times)

16

Thermal shock No mechanical damage. Shall meet specification of trigger voltage and the insulation resistance.

-55 ± 3°C：30 min. Room temperature：2 ~ 3 min or less 125 ± 2°C：30 min. Room temperature：2 ~ 3 min or less Repeat above step for 10 cycles.

17

Moisture resistance No mechanical damage. Shall meet specification of trigger voltage and the insulation resistance.

Temperature : 85 ± 3°C Humidity : 85 ± 5% RH Leaving Duration : 1000 h

18 Load life No mechanical damage.


Temperature : 85 ± 2°C Applied : 24V (Rated voltage) Duration : 1000 hours

19

Accelerated damp heat steady state

No mechanical damage. Shall meet specification of trigger voltage and the insulation resistance.

Temperature：85 ± 3 Humidity：85 ± 5%RH Applied：24V(rated voltage) Duration：1000 hours

20 Stability No mechanical damage.


Temperature：125 ± 2 Leaving Duration：1000 hours

PERFORMANCE

3

Application Notes for Surge Absorber

1. Circuit Design

Type KVA Surge Absorber is a part for protection from static

electricity and cannot be used for protection from lightning surge.

Before using Type KVA Surge Absorber, sufficiently examine its

electrical characteristics and the circuit conditions to be

mounted.

(1) Type KVA should always be operated below the rated

voltage.

(2) Use Type KVA under the condition of category temperature.

Type KVA should be selected by determining the operating

conditions that will occur after final assembly, or estimating

potential abnormalities through cycle testing.

2. Assembly and Mounting

During the entire assembly process, observe Type KVA body

temperature and the heating time specified in the performance

table. In addition, observe the following items :

(1) Mounting and adjusting with soldering irons are not

recommendable since temperature and time control is

difficult.

In case of emergency for using soldering irons, be sure to

observe the conditions specified in the performance table.

(2) Type KVA body should not have direct contact with a

soldering iron.

(3) Once Type KVA mounted on the board, they should never

be remounted on boards or substrates.

(4) During mounting, be careful not to apply any excessive

mechanical stresses to Type KVA.

3. Solvents

For cleaning of Type KVA, immersion in isopropyl alcohol for 90

seconds (at 20 ~ 30°C liquid temp.) will not be damaged.

If organic solvents (Pine AlphaTM, Techno CareTM, Clean

ThroughTM, etc.) will be applied to Type KVA, be sure to

preliminarily check that the solvent will not damage the Type

KVA.

4. Caution During Usage

Type KVA should never be touched in use.

5. Environmental Conditions

(1) Type KVA should not be operated in acid or alkali corrosive

atmosphere.

(2) Type KVA should not be vibrated, shocked, or pressed

excessively.

(3) Type KVA should not be operated in a flammable or explosive

atmosphere.

(4) After mounting Type KVA on a board, covering Fuses with

resin may affect to the electric characteristics of Type KVA.

Please be sure to evaluate it in advance.

6. Emergency In case of fire, smoking, or offensive odor during operation,

please cut off the power in the circuit or pull the plug out.

7. Storage (1) Type KVA should be stored at room temperature (-10 ~

+40) without direct sunlight but not in corrosive atmosphere

such as H2S（hydrogen sulfide）or SO2(sulfur dioxide).

Direct sunlight may cause decolorization and deformation of

the exterior and taping.

Also, there is a fear that solderability will be remarkably lower

in high humidity.

(2) If the products are stored for an extended period of time,

please contact Matsuo Sales Department for recommendation.

The longer storage term causes

packages and tapings to worsen. If the products are stored

for longer term, please contact Matsuo Sales Department

for advice.

(3) The products in taping, package, or box should not begiven

any kind of physical pressure. Deformation of taping

or package may affect automatic mounting.

8. Disposal When Type KVA are disposed of as waste or “scrap”, they should

be treated as “industrial waste”. Type KVA contain various kinds

of metals and resins.

9. Samples

Type KVA received as samples should not be used in any

products or devices in the market. Samples are provided for a

particular purpose such as configuration, confirmation of electrical

characteristics, etc.

Please feel free to ask our sales department for more information on the Surge Absorber.

Overseas Sales Dep： 5-3, 3-Chome, Sennari-cho, Toyonaka-shi, Osaka 561-8558, Japan Tel : 06-6332-0883 Fax : 06-6332-0920

Head Office： 5-3, 3-Chome, Sennari-cho, Toyonaka-shi, Osaka 561-8558, Japan Tel : 06-6332-0871 Fax : 06-6331-1386

URL： http://www.ncc-matsuo.co.jp/

The specifications on this catalog are subject to change without prior notice. Please inquire of our Sales

Department to confirm the specifications prior to use.

R

MATSUOMATSUO ELECTRIC CO., LTD.

4

Type KAH micro fuse is designed for circuit protection against excessive current in portable electronic equipment, electronic circuit

around battery, etc. because the demand for high capacity batteries is increasing.

Further miniaturization and low profile with extended rated range can be used for wider application.

Also, the ecology design of Type KAH is friendly to environment due to complete lead free.

1. 5-face terminals structure ensure superior performance of shear strength (10 N for 5-face terminals, 5 N for conventional type).

2. With new development of micro fuse using our original production method, Type KAH, size 1005 can ensure same fusing

characteristics of size 1608 of our Type KAB.

3. Complete lead-free Type KAH is designed friendly to environment.

4. UL file number E170721. (UL248-1 & 14)

5. Surface temperature rise is 75°C or less when applying rated current. This offers less influence on the peripheral units.

6. 1005 is the Ultra-small size. (1.0 x 0.5 x 0.35 mm)

7. Suitable for automatic mounting

8. Precise dimensions allows high-density mounting and symmetrical construction of terminals provide “Self-Alignment”.


10. High accuracy carrier tape by using pressed pocket paper ensures excellent mounting.

Item Ratings

Category Temperature Range – 40~+125°C

Rated Current 0.2–0.25–0.315–0.4–0.5–0.63–0.8–1.0–1.25–1.6–2.0–2.5A

Rated Voltage 24 VDC

Voltage Drop Refer to CATALOG NUMBERS AND RATING

Insulation Resistance 1000 MΩ or more

Fusing Characteristics Fusing within 1 minute if the current is 200% of rated current.

Clearing Characteristics Breaking voltage : 24 V

Breaking current : 50 A

KAH 2402 102 NA 07

Tyoe Code RV Code Rated current Code Rated current Code Packaging type Code Case size

KAH

2402

24V

201

251

321

401

501

631

0.2 A

0.25 A

0.315 A

0.4 A

0.5 A

0.63 A

801

102

132

162

202

252

0.8 A

1.0 A

1.25 A

1.6 A

2.0 A

2.5 A

NA

180 Reel

07

1.0×0.5

Catalog number Case size Rated current

A

Internal resistance mΩ

(Typical)

Voltage drop mV

(Max.)

Rated voltage VDC

Breaking current

A

KAH 2402 20107 1.0 × 0.5 0.2 1148 350

24 50

KAH 2402 25107 1.0 × 0.5 0.25 797 300

KAH 2402 32107 1.0 × 0.5 0.315 548 260

KAH 2402 40107 1.0 × 0.5 0.4 372 225

KAH 2402 50107 1.0 × 0.5 0.5 261 195

KAH 2402 63107 1.0 × 0.5 0.63 181 170

KAH 2402 80107 1.0 × 0.5 0.8 125 150

KAH 2402 10207 1.0 × 0.5 1.0 90 135

KAH 2402 13207 1.0 × 0.5 1.25 65 120

KAH 2402 16207 1.0 × 0.5 1.6 46 110

KAH 2402 20207 1.0 × 0.5 2.0 35 110

KAH 2402 25207 1.0 × 0.5 2.5 27 110

For the taping type,the packaging code “NA” will be sntered in

Catalog numbers are approved by UL and cUL. (File No. E170721)

FEATURES

CATALOG NUMBERS AND RATING

November, 2010

RATING


TYPE KAH

1

MARKING

CONSTRUCTION

Main body：Alumina ceramiv Terminal：Tin plating (mm)

Case size Case code L W T max P

1005 07 1.00±0.05 0.50±0.05 0.35 0.20±0.10

Code ： Rated current Code ： Rated current

P ： 0.20 A V ： 0.80 A

Q ： 0.25 A 1 ： 1.00 A

R ： 0.315 A W ： 1.25 A

S ： 0.40 A X ： 1.60 A

T ： 0.50 A 2 ： 2.00 A

U ： 0.63 A Y ： 2.50 A

Name Mate

Protective coating Silicone resin

Fuse element Copper alloy


Terminal Tin painting

(mm)

Size 1005

a 0.4

b 0.5

c 0.6


Board thickness：1.6 mm

Copper layer：35m

DIMENSIONS

STANDARD TEST BOARD


Ｐ

Ｌ

Ｗ

Ｔ

Ｔ

Body

Fuse element Protective

coating

c

Terminal

100 mm

33 mm

5 mm

0.6 mm

2


1 Temperature rise Temperature rise shall not exceed 75. Apply rated current.

2 Current-carrying capacity Shall not open within 1 hour. Apply rated current.

3 Clearing characteristics Arc shall not be continued.

Marking shall be legible.

Breaking voltage：24 V

Breaking current：50 A

4 Voltage drop Voltage drop is below the value specified in CATALOG

NUMBERS AND RATING. Apply rated current.

5 Fusing characteristics Fusing within 1 min. Apply 200% of rated current.

(Ambient temperature：10–30

6 Insulation resistance 1000 MΩ or more Insulation resistance between terminals and case

(alumina ceramic)

7 Electrode strength

(Bending)

No mechanical damage.

Resistance change after the test shall be within ± 20%.

Board supporting width：90 mm

Bending speed：Approx. 0.5 mm/sec.

Duration：30 sec.

Bending：3 mm

8 Shear test No mechanical damage.


Applied force：10 N (1.02 kgf)

Duration：10 sec.

Tool：R0.5

Direction of the press：side face

9 Substrate bending test No mechanical damage.


Supporting dimension：0.5 mm

Applied force：5 N (0.51 kgf)

Tool：R0.5

Direction of the press：thickness direction of product.

10 Solderability

(Solder Wetting time) Solder Wetting time : within 3sec.

Solder : Sn–3Ag–0.5Cu Temperature : 245 ± 3°C

meniscograph method

Solder : JISZ3282 H60A, H60S, H63A Temperature : 230 ± 2°C

meniscograph method

11 Solderability

(new uniform coating of solder) The dipped surface of the terminals shall be covered

more than 95% with new solder.

Solder : Sn–3Ag–0.5Cu Temperature : 245 ± 3°C

Dipping : 3 sec.

Solder : JISZ3282 H60A, H60S, H63A Temperature : 230 ± 2°C

Dipping : 3 sec.

12 Resistance to soldering heat




Dipping (1 cycle)

Preconditioning：100 to 150°C, 60 sec.

Temperature：265 ± 3°C/6–7 sec.

Reflow soldering (2 cycles)

Preconditioning：1–2 min, 180°C or less

Peak：250 ± 5°C, 5 sec.

Holding：230–250°C, 30–40 sec.

Cooling：more than 2 min.

Manual soldering

Temperature：350 ± 10°C

Duration：3–4 sec.

Measure after 1 hour left under room temp. and

humidity.

13 Solvent resistance




Dipping rinse

Solvent：Isopropyl alcohol

Duration：90 sec.

14 Ultrasonic Cleaning




Ultrasonic : 20mW/cm2 28kHz

Solvent：Isopropyl alcohol

Duration：60 sec.

15 Vibration No mechanical damage.


Frequency range：10–55–10 Hz/min

Vibration amplitude：1.5 mm

Duration：2 hours in each of XYZ directions

(total：6 hours)

16 Shock No mechanical damage.


Peak value：490 m/s2 (50 G)

Duration：11 m sec.

6 aspects 3 times (total：18 times)

17 Thermal shock No mechanical damage.


–55 ± 3°C : 30 min.

Room temperature：2–3 min or less

125 ± 230 min

Room temperature：2–3 min or less

Repeat above step for 10 cycles.

18 Atomizing salt water No mechanical damage.


Temperature : 35 ± 2°C Concentration (weight ratio) : 5 ± 1%

Duration : 24 hours

19 Moisture resistance No mechanical damage.


Temperature：85 ± 3

Humidity：85 ± 5% RH

Duration：1000 hours

20 Load life No mechanical damage.



Applied current：Rated current 70%


21 Stability No mechanical damage.




22 Accelerated damp heat steady

state



Temperature：85 ± 3°C

Humidity：85 ± 5% RH

Applied current : Rated current 70%


PERFORMANCE

3

KAH 2402 102NA07

KAH 2402 102NA07

FUSING CHARACTERISTICS

I2T – T CHARACTERISTICS

DISTRIBUTION OF FUSING CHARACTERISTICS

DISTRIBUTION OF FUSING TIME

0.0001

0.001

0.01

0.1

1

10

100

1000

0.1 1 10 100

Applied current (A)

Fusin

g tim

e (

sec)

0.0001

0.001

0.01

0.1

1

0 20 40 60 80 100

200% of rated current is

400% of rated current is

applied

Number of pcs

Fus

ing

tim

e (s

ec)

0.20A0.25A0.315A

0.50A0.40A

0.63A0.80A1.00A1.25A1.60A2.00A2.50A

0.00001

0.0001

0.001

0.01

0.1

1

10

100

1000

0.0001 0.001 0.01 0.1 1 10 100

Fusing time (sec)

Jo

ule

in

teg

ral (A

2s)

0.2

0A

0.2

5A

0.3

15A

0.5

0A

0.4

0A

0.6

3A

0.8

0A

1.0

0A

1.2

5A

1.6

0A

2.0

0A

2.5

0A

0.0001

0.001

0.01

0.1

1

10

100

0.1 1 10 100

Applied current (A)

Fu

sin

g t

ime

(se

c)

4

Fig.B

Determine the rated value of the microfuse, and select the correct microfuse for your circuit. If you select the correct microfuse,

safety of your circuit can be ensured.

How to determine the rated value of the microfuse is described below :

Flow for fuse selection

1. Measurement of circuit values using actual device

Measure the circuit values, such as operating current of the circuit.

2. Calculation from operating current

From the obtained operating current and the category temperature, calculate the minimum rated value to determine the applicable

fuse.

3. Calculation from overload current

From the obtained overload current, calculate the maximum rated value to determine the applicable fuse.

4. Calculation from inrush current

From the inrush current, calculate the minimum rated value to determine the applicable fuse.

5. Final determination of rated value

From the calculation results of steps 2 through 4, determine the rated value.

6. Operation check using actual device

After selecting the rating, confirm if the device works properly under the pre-determined conditions.

Fuse selection

1.Measurement of circuit values using actual device

Before determining the rated value of the fuse, preliminarily measure the following using the actual device.

1–1 Operating current

Using an oscilloscope or equivalents, measure the operating current of the circuit.

1–2 Overload current

Using an oscilloscope or equivalents, measure the overload current that needs to break the circuit.

1–3 Inrush current

Using an oscilloscope or equivalents, measure the inrush current of the circuit at power-on or power-off. In addition, determine

the number of inrush current applied.

1–4 Category temperature

Measure the ambient temperature of the fuse circuit.

EXAMPLE TO SELECT RATINGS OF TYPE KAH

<Fuse selection>

Effective operating current : 1.2 A

Effective overload current : 6.0 A

Inrush current waveform : Fig. A

(Pulse width : 1 ms, Wave height : 6.0 A)

Numbers to withstand inrush current : 100,000 times

Category temperature : 85°C


2–1 Measurement of operating current

Using an oscilloscope or equivalents, measure operating current (effective current) of the actual circuit.

Example : Effective operating current = 1.2 A

2–2 Derating

①Temperature derating factor

Using Fig. B, find the temperature derating factor correspond to the temperature.

②Rated derating factor

Rated derating factor = 0.75

Use Formula 1 to calculate the rated current of the fuse to be used for the circuit.

Rated current of fuse ≧ Operating current ／ (① ②) ... Formula 1

Example : Category temperature = 85°C, Operating current = 1.2 A

①Temperature derating factor = 0.90 (Refer to Fig. B.)

②Rated derating factor = 0.75

Calculation using Formula 1 :

Rated current ≧ 1.2／ (0.90 0.75) = 1.78 A

The above calculation result shows that the fuse with rated current of 1.78 A or more should be selected for this circuit.

Type KAH, with rated current of 2.0 A or more can be selected.

Fig. A : Inrush current waveform

DETERMINATION OF RATED VALUE AND SELECTION OF MICROFUSE(TYPE KAH,SIZE 1005)

1ms

6.0 Ａ

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

-50 -25 0 25 50 75 100 125

Temperature ()

Dera

ting facto

r (%

)

5


3–1 Measurement of overload current


Example : Effective overload current = 6.0 A

3–2 Calculation from overload current

Determine the rated current so that the overload current can be 2 times larger than the rated current.

Use Formula 2 to calculate the rated current of the fuse.

Rated current of fuse ≦ Overload current ／2.0 ... Formula 2

Example : Overload current = 6.0 A

Use Formula 2 to calculate the rated current.

Rated current ≦ 6.0／2.0 = 3.0 A

The above calculation result shows that the fuse with rated current of 3.0 A or less should be selected for this circuit.

Type KAH, with rated current of 2.5 A or less can be selected.


4–1 Measurement of inrush current waveform

Using an oscilloscope or equivalent, measure the waveform of the inrush

current of the actual circuit.

4–2 Creation of approximate waveform

Generally, the waveform of inrush current is complicated. For this reason,

create the approximate waveform of inrush current as shown on Fig. C to

simplify calculation.

4–3 Calculation of I2t of inrush current

Calculate I2t (Joule integral) of the approximate waveform.

The formula for this calculation depends on the approximate waveform.

Refer to Table A.

Example : Pulse applied = 1 ms, Peak value = 6.0 A,

Approximate waveform = Triangular wave

Since the approximate waveform is a triangular wave, use the

following formula for calculation

I2t of rush current = 1／3 Im2 t ... Formula 3

(Im : Peak value, t : Pulse applying time)

Use Formula 3 to calculate the I2t of the rush current :

I2t = 1／3 6 6 0.001 = 0.012 (A

2s)

* Following formula is generally used for calculation of 2t as i(t) equal to curre nt.

2 t＝∫0ｔｉ2（t）dt

Name Waveform 2 t Name Waveform

2 t

Sine wave

(1 cycle )

Trapezoidal

wave

Sine wave

(half cycle)

Various

wave 1

Triangular

wave

Various

wave 2

Rectangular

wave

Charge/

discharge

waveform

JOULE-INTERGRAL VALUES FOR EACH WAVEFORM

1ms

6A

Fig. C : Inrush current waveform

Red line : Actual measurement waveform

Black line : Approximae waveform

1

3 m2

t1 + m2 (t2-t1) +

m2 (t3-t2)

1

3

2

1 t1+12+ (1-2) 2

(t2-t1)+ 2

2 (t3-t2)

1

3

1

3 1

3

m

t 0 1

2

t

m

0

0 t

m

0 t

m

0 -t τ

i (t) = m e-t/τ m

0.368 m

1

3 m2

t

m2 t

1

2

m2 t

1

2

m2 t

t2 t3

m

0 t1

t

2

0

1

t2 0 t1 t3

2 1

m2 τ 1

2

1 2 t + (1-2) 2 t

1

3

Table A

6

4–4 Search of load ratio

①Set up the number of cycles to withstand. (generally

100,000 times)

②Obtain the load ratio from Pulse resistance characteristics.

(Fig. D)

Example : 100,000 times is required against inrush current

applied.

Determine the load ratio using Fig. D.

If the rated current is 0.2 to 2.0 A : 30% or less

If the rated current is 2.5 A : 26% or less

4–5 Calculation from Joule integral and load ratio

Use Formula 4 to calculate the standard I2t for the fuse to be

used.

Standard I2t of fuse > (I

2t of inrush current ／ load ratio) ..........

..........Formula 4

Example : I2t of pulse = 0.012 A

2s,

Pulse applied = 1 ms, Required load ratio = 30% (at 0.2 to 2.0 A

Fuse) or 26% (at 2.5 A Fuse) :

Example of 2.0 A Fuse : Use Formula 4 to calculate the

standard I2t of fuse.

Standard I2t of fuse > 0.012/0.3 = 0.04 (A

2s)

The standard I2t of the fuse should be 0.04 (A

2s) or more.

Since the rush pulse applied is 1 ms, obtain the intersection

of 1 ms (horizontal axis) and 0.04 A2s (vertical axis) from

Fig. E (refer to the arrow shown on Fig. E).

Select a fuse whose curve is above the intersection. Type

KAH, with rated current of 2.0 A or more should be selected.


Determine the rated current of the microfuse. The rated

current should meet all the above calculation results.

Example : Rated current of 2.0 A and 2.5 A meet the all

requirements


After selecting the rating, confirm if the device works properly

under the pre-determined conditions.

Fig. D

Fig. E

PULSE RESISTANCE CHARACTERISTICS

JOULE INTEGRAL VS. FUSING TIME

10

100

1000

10000

100000

1000000

0 10 20 30 40 50 60 70 80 90 100

Load ratio (%)

Num

bers

of

puls

e r

esis

tance (

cycle

)

0.2A to 2.0 A

2.5A

0.20A0.25A0.315A

0.50A0.40A

0.63A0.80A1.00A1.25A1.60A2.00A2.50A

0.00001

0.0001

0.001

0.01

0.1

1

10

100

1000

0.0001 0.001 0.01 0.1 1 10 100

Fusing time (s)

Joule

inte

gra

l (A

2s)

7

Application Notes for Micro Fuse1. Circuit Design 5. Caution During Usage Micro Fuse should be designated only after confirming (1) Micro Fuse with electricity should never be touched. Micro

operating conditions and the Micro Fuse performance Fuse with electricity may cause burning due to the Micro

characteristics. Fuse high temperature. Also, in case of touching Micro

When determining the rated current, be sure to observe the Fuse without electricity, please check the safety

following items : temperature of Micro Fuse.

(1) Micro Fuse should always be operated below the rated (2) Protective eyeglasses should always be worn when

current (the value considered in the temperature derating performing fusing tests. However, there is a fear that Micro

rate) and voltage specifications. According to item 2,2-2 Fuse will explode during test. During fusing tests, please

in page 5. cover particles not to fly outward from the board or testing

(2) Micro Fuse should always be operated below the rated fixture. Caution is necessary during usage at all times.

voltage.

(3) Micro Fuse should be selected with correct rated value to 6. Environmental Conditions be fused at overload current. (1) Micro Fuse should not be operated in acid or alkali corrosive

(4) When Micro Fuse are used in inrush current applications, atmosphere.

please confirm sufficiently inrush resistance of Micro Fuse. (2) Micro Fuse should not be vibrated, shocked, or pressed

(5) Please do not apply the current exceeding the breaking excessively.

current to Micro Fuse. (3) Micro Fuse should not be operated in a flammable or

(6) Use Micro Fuse under the condition of category explosive atmosphere.

temperature. (4) After mounting Micro Fuse on a board, covering Fuses with

(7) Micro Fuse should not be used in the primary power source. resin may affect to the electric characteristics of the Micro

Fuse. Please be sure to evaluate it in advance.

Micro Fuse should be selected by determining the

operating conditions that will occur after final assembly, or 7. Emergency estimating potential abnormalities through cycle testing. In case of fire, smoking, or offensive odor during operation,


2. Assembly and Mounting During the entire assembly process, observe Micro Fuse 8. Storage body temperature and the heating time specified in the (1) Micro Fuse should be stored at room temperature (-10°C ~

performance table. In addition, observe the following items : +40°C) without direct sunlight but not in corrosive atmosphere

(1) Mounting and adjusting with soldering irons are not such as H2S（hydrogen sulfide）or SO2(sulfur dioxide).

recommendable since temperature and time control is Direct sunlight may cause decolorization and deformation of

difficult. the exterior and taping.

In case of emergency for using soldering irons, be sure to Also, there is a fear that solderability will be remarkably

observe the conditions specified in the performance table. lower in high humidity.

(2) Micro Fuse body should not have direct contact with a (2) If the products are stored for an extended period of time,

soldering iron. please contact Matsuo Sales Department for

(3) Once Micro Fuse mounted on the board, they should never recommendation. The longer storage term causes

be remounted on boards or substrates. packages and tapings to worsen. If the products are stored

(4) During mounting, be careful not to apply any excessive for longer term, please contact Matsuo Sales Department

mechanical stresses to the Micro Fuse. for advice.

(3) The products in taping, package, or box should not be

3. Solvents given any kind of physical pressure. Deformation of taping

For cleaning of Micro Fuse, immersion in isopropyl alcohol or package may affect automatic mounting.

for 90 seconds (at 20 ~ 30°C liquid temp.) will not be

damaged. 9. Disposal If organic solvents (Pine Alpha

TM, Techno Care

TM, Clean When Micro Fuse are disposed of as waste or “scrap”, they

ThroughTM

, etc.) will be applied to the Micro Fuse, be sure should be treated as “industrial waste”. Micro Fuse contain

to preliminarily check that the solvent will not damage the various kinds of metals and resins.

Micro Fuse.

10. Samples4. Ultrasonic Cleaning Micro Fuse received as samples should not be used in any

Ultrasonic cleaning is not recommended for Micro Fuse. products or devices in the market. Samples are provided

This may cause damage to the Micro Fuse such as broken for a particular purpose such as configuration, confirmation

terminals which results in electrical characteristics effects, of electrical characteristics, etc.

etc. depending on the conditions.

If Ultrasonic cleaning process must be used, please

evaluate the effects sufficiently before use.

Specifications on this catalog are subject to change without prior notice. Please inquire of our Sales

Department to confirm specifications prior to use.

Please feel free to ask our sales department for more information on the Micro Fuse.

Overseas Sales Dep. 5-3,3-Chome,Sennari-cho,Toyonaka-shi,Osaka 561-8558,Japan Tel : 06-6332-0883 Fax : 06-6332-0920

Head off ice 5-3,3-Chome,Sennari-cho,Toyonaka-shi,Osaka 561-8558,Japan Tel : 06-6332-0871 Fax : 06-6331-1386

URL http://w w w .ncc-matsuo.co.jp/

R


8

Type KAB micro fuse is designed for circuit protection against excessive current in portable electronic equipment, electronic circuit around battery, etc. because the demand for high capacity batteries is increasing.

Further miniaturization and low profile with extended rated range can be used for wider application. Also, the ecology design of Type KAB is friendly to environment due to complete lead free. 1. New type fuses developed by our original technology. They show no variation in fusing characteristics and have excellent fastblow

capability.


3. The fuses come in ultrasmall size 1608 (1.6×0.8×0.45 mm) and 2012 (2.0×1.25×0.5 mm).





8. LEAD-FREE and RoHS Compliant


RATING

K A B 3 2 0 2 1 0 2 N A 2 9 0 1 0

FEATURES

TYPE KAB

Item

Category Temperature Range

1.6×0.8 0.2-0.25-0.315-0.4-0.5-0.63-0.8-1.0-1.25-1.6-2.0-2.5-3.15-4.0-5.0-6.3A

2.0×1.25 0.2-0.25-0.315-0.4-0.5-0.63-0.8-1.0-1.25-1.6-2.0-2.5-3.15-4.0-5.0A

Rated Voltage

Voltage Drop

Insulation Resistance

(between Terminals and Case)

Fusing Characteristics

　 Breaking voltage：24V, 32V, 50VClearing Characteristics

　 Breaking current：50A

24VDC, 32VDC, 50VDC

Rating

　　-40 ～ +125

　 Fusing within 1 min if the current is 200% of rated current.

Rated Current

Refer to CATALOG NUMBERS AND RATING

1000MΩ or more

Type Code Voltage Code Rated current Code Rated current Code Packaging type Code Case size Special product code

KAB 2402 24V 201 0.2 A 132 1.25 A NA φ180 Real 29 1.6 × 0.8

3202 32V 251 0.25 A 162 1.6 A 31 2.0 × 1.25

5002 50V 321 0.315 A 202 2.0 A

401 0.4 A 252 2.5 A

501 0.5 A 322 3.15 A

631 0.63 A 402 4.0 A

801 0.8 A 502 5.0 A

102 1.0 A 632 6.3 A

※ The special product code 010 indicates lead-free terminals.

010※

1

CONSTRUCTION


MARKING


STANDARD TEST BOARD

DIMENSIONS

100 mm

33 mm

5 mm

a mm

1

WL

PP

T

P P

Code : Rated current Code : Rated current

P : 0.2 A W : 1.25 A

Q : 0.25 A X : 1.6 A

R : 0.315A 2 : 2.0 A

S : 0.4 A Y : 2.5 A

T : 0.5 A 3 : 3.15 A

U : 0.63 A 4 : 4.0 A

V : 0.8 A 5 : 5.0 A

1 : 1.0 A 6 : 6.3 A

Name Material





Fuse

element

Protective coating

Terminal

Body

Size 1608 Size 2012

a 1.0 1.4

b 1.2 1.65

c 1.0 1.2

(mm)

Case size Size a

1608 1.2

2012 1.5

(mm)


Copper layer : 35mBoard thickness : 1.6mm

Main Body : Alumina ceramic

Terminal：Tin plating (mm)

Case size Case code L W T max. P

1608 29 1.6 ± 0.1 0.8 ± 0.1 0.45 0.3 ± 0.2

2012 31 2.0 ± 0.1 1.25 ± 0.1 0.5 0.3 ± 0.2

November, 2010

Catalog number Case sizeRated current

A

Internal resistance

mΩ

（Typical）

Voltage drop

mV

(Max.)

Rated voltage

VDC

Breaking current

A

KAB　5002　201　29　010※ 1.6×0.8 0.2 1260 405

KAB　5002　251　29　010 1.6×0.8 0.25 825 355

KAB　5002　321　29　010 1.6×0.8 0.315 530 275

KAB　5002　401　29　010 1.6×0.8 0.4 320 180

KAB　5002　501　29　010 1.6×0.8 0.5 210 140

KAB　3202　631　29　010 1.6×0.8 0.63 135 115

KAB　3202　801　29　010 1.6×0.8 0.8 100 110

KAB　3202　102　29　010 1.6×0.8 1.0 80 110

KAB　3202　132　29　010 1.6×0.8 1.25 60 110

KAB　3202　162　29　010 1.6×0.8 1.6 46 110

KAB　3202　202　29　010 1.6×0.8 2.0 35 110

KAB　2402　252　29　010 1.6×0.8 2.5 27 110

KAB　2402　322　29　010 1.6×0.8 3.15 20 110

KAB　2402　402　29　010 1.6×0.8 4.0 15 110

KAB　2402　502　29　010 1.6×0.8 5.0 13 110

KAB　2402　632　29　010 1.6×0.8 6.3 10 110

KAB　2402　201　31　010 2.0×1.25 0.2 1740 480

KAB　2402　251　31　010 2.0×1.25 0.25 1280 475

KAB　2402　321　31　010 2.0×1.25 0.315 800 375

KAB　2402　401　31　010 2.0×1.25 0.4 440 255

KAB　2402　501　31　010 2.0×1.25 0.5 260 170

KAB　2402　631　31　010 2.0×1.25 0.63 175 150

KAB　2402　801　31　010 2.0×1.25 0.8 120 145

KAB　2402　102　31　010 2.0×1.25 1.0 90 135

KAB　2402　132　31　010 2.0×1.25 1.25 67 130

KAB　2402　162　31　010 2.0×1.25 1.6 48 120

KAB　2402　202　31　010 2.0×1.25 2.0 36 115

KAB　2402　252　31　010 2.0×1.25 2.5 28 110

KAB　2402　322　31　010 2.0×1.25 3.15 21 105

KAB　2402　402　31　010 2.0×1.25 4.0 16 95

KAB　2402　502　31　010 2.0×1.25 5.0 10 60

※For taping specification, the package code (NA) is entered . One reel contains 5000 pcs.

UL/cUL approved File No.E17021

50

50

24 50

24

32

2


1 Temperature rise Temperature rise shall not exceed 75°C. Apply rated current.


3 Clearing characteristics Arc shall not be continued. Marking shall be legible.

Breaking voltage : Rated voltage Breaking current : 50 A

4 Voltage drop Voltage drop is below the value specified in CATALOG NUMBERS AND RATING.

Apply rated current.

5 Fusing characteristics Fusing within 1 min. Apply 200% of rated current. (Ambient temperature : 10 ~ 30°C)

6 Insulation resistance 1000 MΩ or more Insulation resistance between terminals and case (alumina ceramic)


(Bending)

No mechanical damage. Resistance change after the test shall be within ± 20%

Board supporting width : 90 mm Bending speed : Approx. 0.5 mm/sec Duration : 30 sec Bending : 3 mm

8 Shear test No mechanical damage. Resistance change after the test shall be within ± 20%

Applied force : 20 N (2.04 kgf) Duration : 10 sec Tool : R0.5 Direction of the press : side face

9 Substrate bending test No mechanical damage. Resistance change after the test shall be within ± 20%

Supporting dimension : 1.2 mm (size 2012) 0.8 mm (size 1608)

Applied force : 10 N (1.02 kgf) Tool : R0.5 Direction of the press : thickness direction of product

10 Solderability


Solder : Sn–3Ag–0.5Cu Temperature : 245 ± 3°C meniscograph method

Solder : JISZ3282 H60A, H60S, H63A Temperature : 230 ± 2°C meniscograph method

11 Solderability

(new uniform coating of solder)

The dipping surface of the terminals shall be covered

more than 95% with new solder.

Solder : Sn–3Ag–0.5Cu Temperature : 245 ± 3°C Dipping : 3 sec.

Solder : JISZ3282 H60A, H60S, H63A Temperature : 230 ± 2°C Dipping : 3 sec.

12 Resistance to soldering heat Marking shall be legible. No mechanical damage. Resistance change after the test shall be within ± 20%

Dipping (1 cycle) Preconditioning : 100 ~ 150°C, 60 sec Temperature : 265 ± 3°C /6 ~ 7 sec

Reflow soldering (2 cycles) Preconditioning : 1 ~ 2 min, 180°C or less Peak : 260°C max, 5 sec Holding : 230 ~ 250°C, 30 ~ 40 sec Cooling : more than 2 min

Manual soldering Temperature : 400 ± 10°C Duration : 3 ~ 4 sec Measure after 1 hour left under room temp. and humidity.

13 Solvent resistance Marking shall be legible. No mechanical damage. Resistance change after the test shall be within ± 20%

Dipping rinse Solvent : Isopropyl alcohol Duration : 90 sec

14 Ultrasonic Cleaning Marking shall be legible. No mechanical damage. Resistance change after the test shall be within ± 20%


Solvent : Isopropyl alcohol Duration : 60 sec

15 Vibration No mechanical damage. Resistance change after the test shall be within ± 20%

Frequency range : 10 ~ 55 ~ 10 Hz/min Vibration amplitude : 1.5 mm Duration : 2 hours in each of XYZ directions (total : 6 hours)

16 Shock No mechanical damage. Resistance change after the test shall be within ± 20%

Peak value : 490 m/s2 (50 G)

Duration : 11 m sec 6 aspects × 3 times (total : 18 times)

17 Thermal shock No mechanical damage. Resistance change after the test shall be within ± 20%

–55 ± 3°C : 30 min Room temperature : 2 ~ 3 min or les 125 ± 2°C : 30 min Room temperature : 2 ~ 3 min or less Repeat above step for 10 cycles.

18 Atomizing salt water No mechanical damage. Resistance change after the test shall be within ± 20%

Temperature : 35 ± 2°C Concentration (weight ratio) : 5 ± 1% Duration : 24 hours

19 Moisture resistance No mechanical damage. Resistance change after the test shall be within ± 20%

Temperature : 85 ± 3°C Humidity : 85 ± 5% RH Duration : 1000 hours

20 Load life No mechanical damage. Resistance change after the test shall be within ± 20%

Temperature : 85 ± 2°C Applied current : Rated current × 70% Duration : 1000 hours

21 Stability No mechanical damage. Resistance change after the test shall be within ± 20%

Temperature : 125 ± 2°C Duration : 1000 hours

22 Accelerated damp heat

steady state


Temperature : 85 ± 3°C Humidity : 85 ± 5% RH Applied current : Rated current × 70% Duration : 1000 hours

PERFORMANCE

3


Reference Size 1608

0.5

0A

0.8

0A

1.0

0A

1.2

5A

1.6

0A

2.0

0A

2.5

0A

3.1

5A

4.0

0A

0.2

0A

0.2

5A

0.3

15

A

0.4

0A

0.6

3A

5.0

0A

6.3

0A

0.0001

0.001

0.01

0.1

1

10

100

0.1 1 10 100

Applied current (A)

Fu

sin

g tim

e (

se

c)

Size 2012

0.5

0A

0.8

0A

1.0

0A

1.2

5A

1.6

0A

2.0

0A

2.5

0A

3.1

5A

4.0

0A

0.2

0A

0.2

5A

0.3

15

A

0.4

0A

0.6

3A

5.0

0A

0.0001

0.001

0.01

0.1

1

10

100

0.1 1 10 100

Applied current (A)

Fu

sin

g tim

e (

se

c)

4

I2T–T CHARACTERISTICS

Reference Size 1608

0.50A

0.80A1.00A1.25A

1.60A2.00A2.50A3.15A

4.00A

0.20A

0.25A

0.315A

0.40A

0.63A

5.00A

6.30A

0.0001

0.001

0.01

0.1

1

10

100

1000

0.0001 0.001 0.01 0.1 1 10

Fusing time(sec)

Jo

ule

in

teg

ral (Ａ

２ｓ

)

Size 2012

0.50A

0.80A1.00A1.25A

1.60A2.00A2.50A3.15A

4.00A

0.20A

0.25A

0.315A

0.40A

0.63A

5.00A

0.0001

0.001

0.01

0.1

1

10

100

1000

0.0001 0.001 0.01 0.1 1 10

Fusing time (sec)

Jo

ule

in

teg

ral (A

２ｓ

)

5


分布王


KAB 2402 102 n：1158 pcs.

KAB 2402 102 n：100 pcs.

0.0001

0.001

0.01

0.1

1

0 20 40 60 80 100

Number of pieces

Fusin

g t

ime (

sec)

400% of rated cur rent ls appl led.

200% of rated current ls applled.

0.0001

0.001

0.01

0.1

1

10

100

0.1 1 10 100

Applied current（A)

Fusin

g t

ime (

sec)

6

Determine the rated value of the microfuse, and select the correct microfuse for your circuit. If you select the correct microfuse, safety of your circuit can be ensured. How to determine the rated value of the microfuse is described below :

Flow for fuse selection 1. Measurement of circuit values using acute device



From the obtained operating current and the category temperature, calculate the minimum rated value to determine the

applicable fuse.









Fuse selection












EXAMPLE TO SELECT RATINGS OF TYPE KAB

<Fuse selection>

Effective operating current : 1.2 A Effective overload current : 6.0 A Inrush current waveform : Fig. A

(Pulse width : 1 ms, Wave height : 6.0 A) Numbers to withstand inrush current : 100,000 times Category temperature : 85°C





2–2 Derating



②


Rated current of fuse ≥ Operating current/ (①×②) ... Formula 1）





Rated current ≥ 1.2/ (0.90×0.75) = 1.78 A

DETERMINATION OF RATED VALUE AND SELECTION OF MICRO FUSE (TYPE KAB)

Fig. B


1ms

6.0Ａ

0

20

40

60

80

100

120

140

-50 -25 0 25 50 75 100 125

Temperature（）

De

ratin

g f

acto

r (%

)

KAB temperature derating

7








Rated current of fuse ≤ Overload current/2.0 ... Formula 2



Rated current ≤ 6.0/2.0 = 3.0 A


Type KAB, with rated current of 2.5 A or less can be selected.












Refer to Table A.





I2t of rush current = 1/3×Im2 × t ... Formula 3



I2t = 1/3×6×6×0.001 = 0.012 (A2s)

* Following formula is generally used for calculation of 2t as i(t) equal to current.



2 t

Sine wave

(1 cycle )

Trapezoidal

wave

Sine wave

(half cycle)

Various

wave 1

Triangular

wave

Various

wave 2

Rectangular

wave

Charge/

discharge

waveform

JOULE-INTEGRAL VALUES FOR EACH WAVEFORM



Black line : Approximate wave

1ms

6A

1

3 m2

t1 + m2 (t2-t1) +

m2 (t3-t2)

1

3

m

t 0 1 2

t

m

0

0 t

m

0 t

m

0 -t τ

i (t) = m e-t/τ m

0.368 m

2

1 t1+12+ (1-2) 2

(t2-t1)+ 2

2 (t3-t2)

1

3

1

3 1

3

1

3 m2

t

m2 t

1

2

m2 t

1

2

m2 t

t2 t3

m

0 t1

t

2

0

1

t2 0 t1 t3

2 1

m2 τ 1

2

1 2 t + (1-2) 2 t

1

3

Table A

8


①Set up the number of cycles to withsand. (generally

100,000 times)


(Fig. D)


applied.


If the rated current is 0.2 ~ 2.0 A : 30% or less





used.

Standard I2t of fuse > (I2t of inrush current/load ratio) ..........

..........Formula 4

Example : I2t of pulse = 0.012 A2s,

Required load ratio = 30% (at 0.2 ~ 2.0 A Fuse),

26% (at 2.5 ~ 4.0 A Fuse) or

22% (at 5.0 ~ 6.3 A Fuse)

Example of 2.0 A Fuse : Use Formula 4 to calculate the

standard I2t of fuse.

Standard I2t of fuse > 0.012/0.3 = 0.04 (A2s)

The standard I2t of the fuse should be 0.04 (A2s) or more.




*Fig. E shows the Joule integral curves for size 1608. For

size 2012, use the Joule integral curves for the size. Select a fuse whose curve is above the intersection. Type KAB, with rated current of 1.6 A or more should be selected.





requirements.




PULSE RESISTANCE CHARACTERISTCS


Fig. D

Fig. E

×

Joule Integral Curves for size 1608

0.50A

0.80A1.00A1.25A

1.60A2.00A2.50A3.15A

4.00A

0.20A

0.25A

0.315A

0.40A

0.63A

5.00A

6.30A

0.0001

0.001

0.01

0.1

1

10

100

1000

0.0001 0.001 0.01 0.1 1 10

Fusing time(sec)

Jo

ule

in

teg

ral (Ａ

２ｓ

)

10

100

1000

10000

100000

1000000

0 10 20 30 40 50 60 70 80 90 100

Load ratio (%)

Nu

mb

ers

of p

uls

e r

esis

tan

ce

(cycle

)

0.5A～2.0A

5.0A～6.3A

2.5A～4.0A

9











voltage.

















difficult. the exterior and taping. Also, there is a fear that solderability

In case of emergency for using soldering irons, be sure to will be remarkably lower in high humidity.

observe the conditions specified in the performance table. (2) If the products are stored for an extended period of time,

(2) Micro Fuse body should not have direct contact with a please contact Matsuo Sales Department for

soldering iron. recommendation. The longer storage term causes

(3) Once Micro Fuse mounted on the board, they should never packages and tapings to worsen. If the products are stored

be remounted on boards or substrates. for longer term, please contact Matsuo Sales Department

(4) During mounting, be careful not to apply any excessive for advice.

mechanical stresses to the Micro Fuse. (3) The products in taping, package, or box should not be

given any kind of physical pressure. Deformation of taping

3. Solvents or package may affect automatic mounting.

For cleaning of Micro Fuse, immersion in isopropyl alcohol

for 90 seconds (at 20 ~ 30°C liquid temp.) will not be 9. Disposal damaged. When Micro Fuse are disposed of as waste or “scrap”, they

If organic solvents (Pine AlphaTM

, Techno CareTM

, Clean should be treated as “industrial waste”. Micro Fuse contain

ThroughTM

, etc.) will be applied to the Micro Fuse, be sure various kinds of metals and resins.

to preliminarily check that the solvent will not damage the

Micro Fuse. 10. Samples Micro Fuse received as samples should not be used in any

4. Ultrasonic Cleaning products or devices in the market. Samples are provided

Ultrasonic cleaning is not recommended for Micro Fuse. for a particular purpose such as configuration, confirmation

This may cause damage to the Micro Fuse such as broken of electrical characteristics, etc.

terminals which results in electrical characteristics effects,








R




10

In accordance with growth of portable electronic appliance, usage of Lithium ion battery is increasing.

Type KAB T Series micro fuse is designed for protection of Lithium ion battery, maintaining original characteristics with Resist

Current Pulse improved. Further more perfectly compliant to Lead-free makes environment friendly design.

1. Type KAB T Series show no variation and have excellent Resist Current Pulse in fusing characteristics.






FEATURES


RATING

Type KAB T Series

K A B Ｔ 3 2 0 2 5 0 2 N A 2 9

Item Rating

Category Temperature Range 　　　-40 ～ +125

Rated Current 1.6-2.0-2.5-3.15-4.0-5.0-6.3A

Rated Voltage 　　32VDC

Voltage Drop 　　Refer to CATALOG NUMBERS AND RATING


(between Terminals and Case)　　1000MΩ or more

Fusing Characteristics 　 Fusing within 1 min if the current is 200% of rated current.

　 Breaking voltage：32V

　 Breaking current：50AClearing Characteristics

Type Series Code Voltage Code Rated current Code Rated current Code Packaging type Code Case size

KAB T 3202 32V 162 1.6 A 402 4.0 A NA φ180リール 29 1.6×0.8

202 2.0 A 502 5.0 A

252 2.5 A 632 6.3 A

322 3.15 A

1

CONSTRUCTION



STANDARD TEST BOARD

100 mm

33 mm

5 mm

a mm

DIMENSIONS

MARKING

Catalog number Case sizeRated current

A

Internal resistance

mΩ

（Typical）

Voltage drop

mV

(Max.)

Rated voltage

VDC

Breaking current

A

KABT　3202　162　29 1.6×0.8 1.6 51 110

KABT　3202　202　29 1.6×0.8 2 39 110

KABT　3202　252　29 1.6×0.8 2.5 30 110

KABT　3202　322　29 1.6×0.8 3.15 22 110

KABT　3202　402　29 1.6×0.8 4 17 110

KABT　3202　502　29 1.6×0.8 5 12 110

KABT　3202　632　29 1.6×0.8 6.3 9.2 110

For taping specification, the package code (NA) is entered . One reel contains 5000 pcs.

UL/cUL approved File No.E17021

32 50

Code : Rated current

X : 　　1.6 A

2 : 　　2.0 A

Y : 　　2.5 A

3 : 　　3.15 A

4 : 　　4.0 A

5 : 　　5.0 A

6 : 　　6.3 A

Size 1608

a 1.0

b 1.2

c 1.0

(mm)

Case size Size a

1608 1.2

(mm)


Copper layer : 35m

Board thickness : 1.6mm

Name Material





Main Body : Alumina ceramic

Terminal：Tin plating (mm)

Case size Case code L W T max. P

1608 29 1.6 ± 0.1 0.8 ± 0.1 0.5 0.3 ± 0.2

August, 2010

Ｗ

Ｐ

Ｔ

Ｐ’

Ｐ

Ｌ

Ｐ’

1

Body

Protective coating

Terminal

Fuse element

2









6 Insulation resistance 1000 MΩ or more Insulation resistance between terminals and case (alumina ceramic)


(Bending)


Board supporting width : 90 mm Bending speed : Approx. 0.5 mm/sec. Duration : 30 sec. Bending : 3 mm

8 Shear test No mechanical damage. Resistance change after the test shall be within ± 20%

Applied force : 20 N (2.04 kgf) Duration : 10 sec. Tool : R0.5 Direction of the press : side face

9 Substrate bending test No mechanical damage. Resistance change after the test shall be within ± 20%

Supporting dimension : 0.8 mm (size 1608) Applied force : 10 N (1.02 kgf) Tool : R0.5 Direction of the press : thickness direction of product

10 Solderability




11

Solderability

(new uniform coating of solder)




12 Resistance to soldering heat



Resistance change after the test shall be within ± 20%

Dipping (1 cycle) Preconditioning : 100 ~ 150°C, 60 sec. Temperature : 265 ± 3°C /6 ~ 7 sec.

Reflow soldering (2 cycles) Preconditioning : 1 ~ 2 min, 180°C or less Peak : 260°C max, 5 sec. Holding : 230 ~ 250°C, 30 ~ 40 sec. Cooling : more than 2 min.

Manual soldering Temperature : 350 ± 10°C Duration : 3 ~ 4 sec. Measure after 1 hour left under room temp. and humidity.

13 Solvent resistance Marking shall be legible. No mechanical damage. Resistance change after the test shall be within ± 20%

Dipping rinse Solvent : Isopropyl alcohol Duration : 90 sec.

14 Ultrasonic Cleaning Marking shall be legible. No mechanical damage. Resistance change after the test shall be within ± 20%


Solvent : Isopropyl alcohol Duration : 60 sec

15 Vibration No mechanical damage. Resistance change after the test shall be within ± 20%

Frequency range : 10 ~ 55 ~ 10 Hz/min Vibration amplitude : 1.5 mm Duration : 2 hours in each of XYZ directions (total : 6 hours)

16 Shock No mechanical damage. Resistance change after the test shall be within ± 20%

Peak value : 490 m/s2 (50 G)

Duration : 11 m sec. 6 aspects × 3 times (total : 18 times)

17 Thermal shock No mechanical damage. Resistance change after the test shall be within ± 20%

–55 ± 3°C : 30 min Room temperature : 2 ~ 3 min or les 125 ± 2°C : 30 min. Room temperature : 2 ~ 3 min or less Repeat above step for 10 cycles.

18 Atomizing salt water No mechanical damage. Resistance change after the test shall be within ± 20%

Temperature : 35 ± 2°C Concentration (weight ratio) : 5 ± 1% Duration : 24 hours

19 Moisture resistance No mechanical damage. Resistance change after the test shall be within ± 20%


20 Load life No mechanical damage. Resistance change after the test shall be within ± 20%


21 Stability No mechanical damage. Resistance change after the test shall be within ± 20%


22 Accelerated damp heat

steady state


Temperature : 85 ± 3°C Humidity : 85 ± 5% RH Applied current : Rated current × 50% Duration : 1000 hours

PERFORMANCE

3


I2T–T CHARACTERISTICS

0.0001

0.001

0.01

0.1

1

10

100

0.1 1 10 100

Applied current (A)

Fusin

g tim

e (

sec)

1.6

A2.0

A2

.5A

3.1

5A

4.0

A5

.0A

6.3

A

0.0001

0.001

0.01

0.1

1

10

100

1000

0.0001 0.001 0.01 0.1 1 10 100

Fusing time (sec)

Joule

inte

gra

l (A

2s)

2.0

A

2.5

A3

.15

A4

.0A

5.0

A

6.3

A

1.6

A

4



分布王

KABT 3202 202 NA 29

KABT 3202 202 NA 29

0.0001

0.001

0.01

0.1

1

10

100

0.1 1 10 100

Applied current (A)

Fusin

g t

ime (

sec)

0.0001

0.001

0.01

0.1

1

10

0 10 20 30 40 50

200% of rated current is applied

500% of rated current is applied

Number of pieces

Fu

sin

g t

ime (

se

c)

5

Determine the rated value of the microfuse, and select the correct microfuse for your circuit. If you select the correct microfuse, safety of your circuit can be ensured. How to determine the rated value of the microfuse is described below :

Flow for fuse selection 1. Measurement of circuit values using acute device



From the obtained operating current and the category temperature, calculate the minimum rated value to determine the

applicable fuse.









Fuse selection












EXAMPLE TO SELECT RATINGS OF TYPE KAB T Series

<Fuse selection>

Effective operating current : 1.2 A Effective overload current : 7.0 A Inrush current waveform : Fig. A

(Pulse width : 1 ms, Wave height : 10.0 A) Numbers to withstand inrush current : 100,000 times Category temperature : 75°C





2–2 Derating



②


Rated current of fuse ≥ Operating current/ (①×②) ... Formula 1）





Rated current ≥ 1.2/ (0.92×0.60) = 2.17 A

DETERMINATION OF RATED VALUE AND SELECTION OF MICRO FUSE (TYPE KAB T Series)

Fig. B


1ms

10.0Ａ

0

20

40

60

80

100

120

-50 -25 0 25 50 75 100 125

Temperature ()

De

ratin

g f

acto

r (%

)

KAB temperature derating

Use for a long time＊1

6




Example : Effective overload current =7.0 A









Type KAB T Series, with rated current of 3.15 A or less can be selected.












Refer to Table A.





I2t of rush current = 1/3×Im2 × t ... Formula 3



I2t = 1/3×10×10×0.001 = 0.033 (A2s)




2 t

Sine wave

(1 cycle )

Trapezoidal

wave

Sine wave

(half cycle)

Various

wave 1

Triangular

wave

Various

wave 2

Rectangular

wave

Charge/

discharge

waveform




Black line : Approximate wave

1ms

10A

1

3 m2

t1 + m2 (t2-t1) +

m2 (t3-t2)

1

3

2

1 t1+12+ (1-2) 2

(t2-t1)+ 2

2 (t3-t2)

1

3

1

3 1

3

m

t 0 1 2

t

m

0

0 t2

m

0 t

m

0 -t τ

i (t) = m e-t/τ m

0.368 m

1

3 m2

t

m2 t

1

2

m2 t

1

2

m2 t

t2 t3

m

0 t1

t

2

0

1

t2 0 t1 t3

2 1

m2 t 1

2

1 2 t + (1-2) 2 t

1

3

Table A

7


①Set up the number of cycles to withsand. (generally

100,000 times)


(Fig. D)


applied.


Required load ratio = 18% or less



used.

Standard I2t of fuse > (I2t of inrush current/load ratio) ..........

..........Formula 4

Example : I2t of pulse = 0.033 A2s,

Required load ratio = 18%

Use Formula 4 to calculate the standard I2t:

Standard I2t of fuse > 0.033/0.18 = 0.183 (A2s)





*Fig. E shows the Joule integral curves for size 1608. For

size 2012, use the Joule integral curves for the size. Select a fuse whose curve is above the intersection. Type

KAB T Series, with rated current of 2.0 A or more should be selected.





requirements.




PULSE RESISTANCE CHARACTERISTCS


Fig. D

Fig. E

0.0001

0.001

0.01

0.1

1

10

100

1000

0.0001 0.001 0.01 0.1 1 10 100

Fusing time (sec)

Joule

inte

gra

l (A

2s)

2.0

A2

.5A

3.1

5A

4.0

A5

.0A

6.3

A

1.6

A

1618202224262830

1

10

100

1000

10000

100000

1000000

10000000

0 10 20 30 40 50 60 70 80 90 100

Load ratio (%)

Num

be

rs o

f puls

e r

esis

tance (

cycle

)

8










rate) and voltage specifications. According to item 2,2-2 in Fuse will explode during test. During fusing tests, please

page 6. cover particles not to fly outward from the board or testing


voltage.

(3) Micro Fuse should be selected with correct rated value to 6. Environmental Conditions be fused at overload current. (1) Micro Fuse should not be operated in acid, alkali, or active

(4) When Micro Fuse are used in inrush current applications, gas atmosphere.












performance table. In addition, observe the following items : +40°C) without direct sunlight. Direct sunlight may cause

(1) Mounting and adjusting with soldering irons are not decolorization and deformation of the exterior and taping.

recommendable since temperature and time control is Also, there is a fear that solderability will be remarkably

difficult. lower in high humidity.

In case of emergency for using soldering irons, be sure to (2) If the products are stored for an extended period of time,

observe the conditions specified in the performance table. please contact Matsuo Sales Department for

(2) Micro Fuse body should not have direct contact with a recommendation. The longer storage term causes

soldering iron. packages and tapings to worsen. If the products are stored

(3) Once Micro Fuse mounted on the board, they should never for longer term, please contact Matsuo Sales Department

be remounted on boards or substrates. for advice.

(4) During mounting, be careful not to apply any excessive (3) The products in taping, package, or box should not be

mechanical stresses to the Micro Fuse. given any kind of physical pressure. Deformation of taping


3. Solvents For cleaning of Micro Fuse, immersion in isopropyl alcohol 9. Disposal for 90 seconds (at 20 ~ 30°C liquid temp.) will not be When Micro Fuse are disposed of as waste or “scrap”, they

damaged. should be treated as “industrial waste”. Micro Fuse contain


, Techno CareTM

, Clean various kinds of metals and resins.

ThroughTM

, etc.) will be applied to the Micro Fuse, be sure

to preliminarily check that the solvent will not damage the 10. Samples Micro Fuse. Micro Fuse received as samples should not be used in any

products or devices in the market. Samples are provided

4. Ultrasonic Cleaning for a particular purpose such as configuration, confirmation

Ultrasonic cleaning is not recommended for Micro Fuse. of electrical characteristics, etc.

This may cause damage to the Micro Fuse such as broken









R


9

Type JAE micro fuse is designed for circuit protection against excessive current in portable electronic equipment, electric circuit around battery, etc. because the demand for high capacity batteries is increasing. Wire material is adopted for fuse element, and the performance against rush current is increased in spite of compact design.

Also, the ecology design of Type JAE is environmentally friendly because of complete lead-free.

1. Our original construction design has excellent fusing and cutting characteristics. 2. Especially, performance against rush current is excellent since wire material is used for fuse element.

3. Surface temperature rise is 75°C or less when applying rated current for fusing. This gives less influence to the peripheral units. 4. Resistance to soldering heat : Reflow or flow soldering 10 seconds at 260°C 5. Our original terminal construction makes almost no occurrence of Tombstone phenomenon.

6. Small size of 3216 (3.2 × 1.6 × 1.4 mm) 7. Suitable for automatic mounting 8. Precise dimensions allows high-density mounting and symmetrical construction of terminals provide ―Self-Alignment‖.

9. Complete lead-free

FEATURES


November, 2010

RATING


Internal resistance Voltage drop

mΩ mV

(Typical) (Max.)

　JAE 2402 401 52 3.2×1.6 0.4 310 220

　JAE 2402 501 52 3.2×1.6 0.5 240 200

　JAE 2402 631 52 3.2×1.6 0.63 190 150

　JAE 2402 801 52 3.2×1.6 0.8 145 150

　JAE 2402 102 52 3.2×1.6 1.0 118 150

　JAE 2402 132 52 3.2×1.6 1.25 93 150

　JAE 2402 162 52 3.2×1.6 1.6 70 150

　JAE 2402 202 52 3.2×1.6 2.0 54 150

　JAE 2402 252 52 3.2×1.6 2.5 43 150

　JAE 2402 322 52 3.2×1.6 3.15 34 150

For the taping type, the packing code ―NA‖ will be entered in .

Catalog numbers are approved by UL and cUL. (File No.E170721)

24 50

Catalog number Case sizeBreaking current

A

Rated current

A

Rated voltage

VDC

J A E 2 4 0 2 2 5 2 N A 5 2

Type Code RV Code Rated current Code Rated current Code Package type Code Case size

401 0.4 A 132 1.25A NA φ180 Reel 52 3.2×1.6

501 0.5 A 162 1.6 A

631 0.63A 202 2.0 A

801 0.8 A 252 2.5 A

102 1.0 A 322 3.15A

JAE 2402 24V

Type JAE

Item


Rated Current

Rated Voltage

Voltage Drop


(between terminals and case)　　1000 MΩ or more


　　Breaking voltage : 24 VClearing Characteristics

　　Breaking current : 50 A

　　24VDC

Rating

　　-40 ~+125

　　Fusing within 2 minute if the current is 250% of rated current.

0.4-0.5-0.63-0.8-1.0-1.25-1.6-2.0-2.5-3.15A

　　Refer to CATALOG NUMBERS AND RATING

1

CONSTRUCTION

STANDARD TEST BODY

DIMENSIONS

MARKING


Ｐ

Ｌ

Ｗ

Ｔ

３ Main body : Glass epoxy

Terminal : Tin plating (mm)

Case size Case code L W T P

3216 52 3.2 ± 0.2

1.6 ± 0.2

1.4 ± 0.2

0.6 ± 0.2


S :　0.40A

T : 0.50A

U : 0.63A

V : 0.80A

1 : 1.00A

W : 1.25A

X : 1.60A

2 : 2.00A

Y : 2.50A

3 : 3.15A

Body Fuse element Space Terminal

(mm)

a 1.0

b 1.6

c 1.6

(Reflow)

Size 3216

Name Material, standard, and treatment

Fuse element Lead-free alloy

Space —


Body Glass epoxy

100mm

33mm

1.5mm

5mm

Glass epoxy body on one side

Board thickness : 1.6 mm

Copper layer :3 μm

2



2 Current-carrying capacity Shall not open within 1 hour. Apply 100% of rated current.


Breaking voltage : 24V Breaking current : 50 A





7 Electrode strength (Bending)

No mechanical damage. Resistance change after the test shall be within ± 20%.


8 Shear test No mechanical damage. Resistance change after the test shall be within ± 20%.


9 Substrate bending test No mechanical damage. Resistance change after the test shall be within ± 20%.

Supporting dimension : 1.6 mm Applied force : 20 N (2.04 kgf) Duration : 10 sec. Tool : R0.5 Direction of the press : thickness direction of product

10 Solderability (Solder Wetting time) Solder Wetting time : within 3sec.



11 Solderability (new uniform coating of solder)




12 Resistance to soldering heat Marking shall be legible. No mechanical damage. Resistance change after the test shall be within ± 20%.

Dipping (1 cycle) Preconditioning : 100 ~ 150°C, 30±5 sec. Temperature : 260 ± 3°C, 5 sec.

Reflow soldering (2 cycles) Preconditioning : 150～180°C、90±30 sec. Peak : 250 °C Holding : 230°C or higher, 30±10 sec. Cooling : 3 ~ 6°C/sec or faster

Manual soldering Temperature : 350 ± 10°C Duration : 2 ~ 3 sec Measure after 1 hour left under room temperature and humidity.

13 Solvent resistance Marking shall be legible. No mechanical damage. No significant irregularity in the appearance.


14 Vibration No mechanical damage. Resistance change after the test shall be within ± 20%.

Frequency range : 10 ~ 55 ~ 10 Hz/min Vibration amplitude : 1.5 mm Duration : 2 hours in each of XYZ directions

(total : 6 hours)

15 Shock No mechanical damage. Resistance change after the test shall be within ± 20%.

Peak value : 490 m/s2(50G)


16 Thermal shock No mechanical damage. Resistance change after the test shall be within ± 20%.

–55 ± 3°C : 30 min. Room temperature : 2 ~ 3 min or less 125 ± 2°C : 30 min. Room temperature : 2 ~ 3 min or less Repeat above step for 10 cycles

17 Moisture resistance No mechanical damage. Resistance change after the test shall be within ± 20%.


18 Load life No mechanical damage. Resistance change after the test shall be within ± 20%.


19 Moisture resistance load No mechanical damage. Resistance change after the test shall be within ± 20%.

Temperature : 85 ± 2°C Humidity : 85 ± 5% RH Applied voltage : rated current × 100% Duration : 1000 h

20 Stability No mechanical damage. Resistance change after the test shall be within ± 20%.


PERFORMANCE

+5 -0

+1 -0

3

JAE 2402 252NA52 n=100 JAE 2402 252NA52



I2T-T CHARACTERISTICS


0.001

0.01

0.1

1

10

100

0.1 1 10 100

Applied current (A)

Fusin

g tim

e (

sec)

0.5

A0

.63

A0

.8A

1.0

A1

.25

A1

.6A

2.0

A2

.5A

3.1

5A

0.4

A

0.001

0.01

0.1

1

10

100

1000

10000

0.001 0.01 0.1 1 10 100

Fusing time (sec)

Joule

inte

gra

l (A

2s)

0.8A0.63A

3.15A2.5A2.0A1.6A1.25A1.0A

0.5A0.4A

0.0001

0.001

0.01

0.1

1

10

100

1000

0.1 1 10 100

Applied current (A)

Fusin

g t

ime (

sec)

0.0001

0.001

0.01

0.1

1

0 20 40 60 80

250% rated current is applied


Numbers of pcs

Fu

sin

g tim

e (

se

c)

4

Determine the rated value of circuit protection element, and select the correct circuit protection element for your circuit. If you select

the correct circuit protection element, safety of your circuit can be ensured. How to determine the rated value of the circuit protection element is described below :





From the obtained operating current and the category temperature, calculate the minimum rated value to determine the applicable fuse.









Fuse selection












EXAMPLE TO SELECT RATINGS OF TYPE JAE

<Fuse selection>











2–2 Derating




Rated derating factor = 1.0 (Constant irrespective of temperature)


Rated current of fuse ≥ Operating current / (① × ②) ... Formula 1

Example: Category temperature = 85°C, Operating current = 1.2 A


②Rated derating factor = 1.0 (Constant irrespective of temperature)


Rated current ≥ 1.2 / (0.76 × 1.0) = 1.58 A


Type JAE, with rated current of 1.6 A or more can be selected.

DETERMINATION OF RATED VALUE AND SELECTION OF MICRO FUSE (TYPE JAE)

6.0A


1ms

Fig. B

0

20

40

60

80

100

120

-50 -25 0 25 50 75 100 125

Temperature ()

De

ratin

g fa

cto

r (%

)

JAE temperature derating

5



Using oscilloscope or equivalents, measure the overload current that needs to break the circuit.



Determine the rated current so that the overload current can be 2.5 times larger than the rated current.


Rated current of fuse ≤ Overload current / 2.5 ... Formula 2



Rated current ≤ 6.0 / 2.5 = 2.4 A


Type JAE, with rated current of 2.0 A or less can be selected.









4–3 Calculation of 2t of inrush current

Calculate 2t (Joule integral) of the approximate waveform.


Refer to Table A.




following formula for calculation.

2t of rush current = 1 / 3 × m2 × t ... Formula 3

(m : Peak value, t : Pulse applying time)

Use Formula 3 to calculate 2t of the rush current :

2t = 1 / 3 × 6 × 6 × 0.001 = 0.012 (A2s)

＊Following formula is generally used for calculation of 2t as i(t) equal to current.

2t＝∫0

ｔｉ2（t）dt


2 t

Sine wave

(1 cycle )

Trapezoidal

wave

Sine wave

(half cycle)

Various

wave 1

Triangular

wave

Various

wave 2

Rectangular

wave

Charge/

discharge

waveform




Black line : Approximate waveform

6.0A

1ms

1

3 m2

t1 + m2 (t2-t1) +

m2 (t3-t2)

1

3

m

t 0 1

2

t

m

0

0 t

m

0 t

m

0 -t τ

i (t) = m e-t/τ m

0.368 m

2

1 t1+12+ (1-2) 2

(t2-t1)+ 2

2 (t3-t2)

1

3

1

3 1

3

1

3 m2

t

m2 t

1

2

m2 t

1

2

m2 t

t2 t3

m

0 t1

t

2

0

1

t2 0 t1 t3

2 1

m2 t 1

2

1 2 t + (1-2) 2 t

1

3

Table A

6



100,000 times)


(Fig. D)


applied.

The load ratio is 20% or less from Fig. D.


Use Formula 4 to calculate the standard 2t for the fuse to be

used.

Standard 2t of fuse > ( 2t of inrush current / load ratio)

..........Formula 4

Example : 2t of pulse = 0.012 A2s, Pulse applied = 1 ms,

Required load ratio = 20%

From Formula 4,

Standard 2t of fuse > 0.012 / 0.2 = 0.06 (A2s)

The standard 2t of the fuse should be 0.06 (A2s) or more.


of 1 ms (horizontal axis) and 0.06 A2s (vertical axis) from Fig.

E (refer to the arrow shown in Fig.E).


JAE, with rated current of 0.63 A or more should be selected.


Determine the rated current of the micro fuse. The rated

current should meet all the calculation results.

Example : 1.6 A and 2.0 A meet the all requirement.






Fig. D

Fig. E

1

10

100

1000

10000

100000

1000000

0 10 20 30 40 50 60 70 80 90 100

Load ratio (%)

Num

ber

of

puls

e r

esis

tance (

cycle

)

0.001

0.01

0.1

1

10

100

1000

10000

0.0001 0.001 0.01 0.1 1 10 100

Fusing time (s)

Joule

inte

gra

l (A

2s)

7







R









rate) and voltage specifications.According to item 2,2-2 in Fuse will explode during test. During fusing tests, please



voltage.





























for 90 seconds (at 20 ~ 30°C liquid temp.) will not be 9. Disposal damaged. When Micro Fuse are disposed of as waste or ―scrap‖, they


, Techno CareTM

, Clean should be treated as ―industrial waste‖. Micro Fuse contain

ThroughTM











8

Type JAG micro fuse is designed for circuit protection against excessive current in portable electronic equipment, electric circuit around battery, etc. because the demand for high capacity batteries is increasing. Wire material is adopted for fuse element, and the performance against rush current is increased in spite of compact design.

Also, the ecology design of Type JAG is environmentally friendly because of complete lead-free.

1. Our original construction design has excellent fusing and cutting characteristics.

2. Especially, performance against rush current is excellent since wire material is used for fuse element.

3. Surface temperature rise is 75°C or less when applying rated current for fusing. This gives less influence to the peripheral units.

4. Resistance to soldering heat: Reflow or flow soldering 10 seconds at 260 °C

5. Our original terminal construction makes almost no occurrence of Tombstone phenomenon.

6. Small size of 3216 (3.2×1.6×1.6 mm)


8. Precise dimensions allows high-density mounting and symmetrical construction of terminals provide ―Self-Alignment‖.


FEATURES


November, 2010

RATING


J A G 3 2 0 2 2 5 2 N A 5 2

Type Code RV Code Rated current Code Rated current Code Package type Code Case size

501 　　　0.5 A 162 　　　1.6 A NA φ180 Reel 52 3.2×1.6

631 　　　0.63A 202 　　　2.0 A

801 　　　0.8 A 252 　　　2.5 A

102 　　　1.0 A 322 　　　3.15A

132 　　　1.25 A 402 　　　4.0 A

JAＧ 3202 32V

Internal resistance Voltage drop

mΩ mV(Typical) (Max.)

　JAG 3202 501 52 3.2×1.6 0.5 310 280

　JAG 3202 631 52 3.2×1.6 0.63 240 240

　JAG 3202 801 52 3.2×1.6 0.8 190 200

　JAG 3202 102 52 3.2×1.6 1.0 145 200

　JAG 3202 132 52 3.2×1.6 1.25 118 200

　JAG 3202 162 52 3.2×1.6 1.6 93 200

　JAG 3202 202 52 3.2×1.6 2.0 70 200

　JAG 3202 252 52 3.2×1.6 2.5 54 200

　JAG 3202 322 52 3.2×1.6 3.15 43 200

　JAG 3202 402 52 3.2×1.6 4.0 34 200

For the taping type, the packing code ―NA‖ will be entered in .Catalog numbers are approved by UL and cUL. (File No.E170721)

32 50

Catalog number Case sizeBreaking current

A

Rated current

A

Rated voltage

VDC

Type JAG

Item


Rated Current

Rated Voltage

Voltage Drop


(between terminals and case)　　1000 MΩ or more


　　Breaking voltage : 32 VClearing Characteristics

　　Breaking current : 50 A

　　32VDC

Rating

　　- 40 ~ +125

　　Fusing within 1 minute if the current is 200% of rated current.

0.5-0.63-0.8-1.0-1.25-1.6-2.0-2.5-3.15-4.0A

　　Refer to CATALOG NUMBERS AND RATING

1

CONSTRUCTION

STANDARD TEST BODY

DIMENSIONS

MARKING


Ｐ

Ｌ

Ｗ

Ｔ

４


T : 0.50A

U : 0.63A

V : 0.80A

1 : 1.00A

W : 1.25A

X : 1.60A

2 : 2.00A

Y : 2.50A

3 : 3.15A

4 : 4.00A

Space Body Fuse element

Terminal

Main body : Glass epoxy



3216 52 3.2 ± 0.2

1.6 ± 0.2

1.4 ± 0.2

0.6 ± 0.2


　Fuse element 　　Lead-free alloy

　Space —

　Terminal 　　Tin plating

　Body 　　Glass epoxy

(mm)

a 1.0

b 1.6

c 1.6

(Reflow)

Size 3216



Copper layer :3 μm

100mm

33mm

1.5mm

5mm

2





Breaking voltage : 32 V Breaking current : 50 A











Supporting dimension : 1.6 mm Applied force : 20 N (2.04 kgf) Duration : 10 sec. Tool : R0.5 Direction of the press : thickness direction of product

10 Solderability (Solder Wetting time)

Solder Wetting time : within 3sec. Solder : Sn–3Ag–0.5Cu Temperature : 245 ± 3°C meniscograph method





12


Marking shall be legible. No mechanical damage.



Dipping (1 cycle) Preconditioning : 100 ~ 150°C, 30±5 sec. Temperature : 260 ± 3°C, 5 sec.

Reflow soldering (2 cycles) Preconditioning : 150～180°C、90±30 sec. Peak : 250 °C Holding : 230°C or higher, 30±10 sec. Cooling : 3 ~ 6°C/sec or faster

Manual soldering Temperature : 350 ± 10°C Duration : 2 ~ 3 sec Measure after 1 hour left under room temperature and humidity.




Frequency range : 10 ~ 55 ~ 10 Hz/min Vibration amplitude : 1.5 mm Duration : 2 hours in each of XYZ directions

(total : 6 hours)


Peak value : 490 m/s2(50G)









Temperature : 85 ± 2°C Humidity : 85 ± 5% RH Applied voltage : rated current × 70% Duration : 1000 h



PERFORMANCE

+1 -0

+5 -0

3

JAG 3202 322NA52 n=100 JAG 3202 322NA52



I2T-T CHARACTERISTICS


0.001

0.01

0.1

1

10

100

0.1 1 10 100

Applied current (A)

Fusin

g tim

e (

sec)

0.5

A0

.63

A0

.8A

1.0

A1

.25

A1

.6A

2.0

A2

.5A

3.1

5A

4.0

A

0.001

0.01

0.1

1

10

100

1000

10000

0.001 0.01 0.1 1 10 100

Fusing time (sec)

Joule

inte

gra

l (A

2s)

0.5A0.63A0.8A1.0A1.25A

1.6A2.0A2.5A3.15A4.0A

0.0001

0.001

0.01

0.1

1

10

100

1000

0.1 1 10 100

Applied current (A)

Fusin

g t

ime (

sec)

0.0001

0.001

0.01

0.1

1

10

0 50 100 150 200 250



Numbers of pcs

Fu

sin

g tim

e (

se

c)

4

Determine the rated value of the micro fuse, and select the correct circuit protection element for your circuit. If you select the correct

circuit protection element, safety of your circuit can be ensured. How to determine the rated value of the circuit protection element is described below:














Fuse selection








Using an oscilloscope or equivalents, measure the inrush current of the circuit at power-on or power-off. In addition, determine the

number of inrush current applied.



EXAMPLE TO SELECT RATINGS OF TYPE JAE

<Fuse selection>











2–2 Derating






Rated current of fuse ≥ Operating current/(① × ②) ... Formula 1





Rated current ≥ 1.2/(0.76 × 0.78) = 2.02 A


Type JAG, with rated current of 2.5 A or more can be selected.

DETERMINATION OF RATED VALUE AND SELECTION OF MICRO FUSE (TYPE JAG)


Fig. B

0

20

40

60

80

100

120

-50 -25 0 25 50 75 100 125

Temperature ()

Dera

ting facto

r (%

)

　　　　　　JAG temperature derating

6.0A

1ms

5



Using oscilloscope or equivalents, measure the overload current that needs to break the circuit.



Determine the rated current so that the overload current can be 2.0 times larger than the rated current.







Type JAG, with rated current of 2.5 A or less can be selected.










Calculate 2t (Joule integral) of the approximate waveform.


Refer to Table A.

Example : Pulse applied = 1 ms, Peak value = 6.0 A




2t of rush current = 1/3 × m2 × t ... Formula 3


Use Formula 3 to calculate I2t of the rush current:

2t = 1/3 × 6 × 6 × 0.001 = 0.012 (A2s)

＊Following formula is generally used for calculation of 2t as i(t) equal to current.

Ⅰ2 t＝∫0ｔｉ2（t）dt


2 t

Sine wave

(1 cycle )

Trapezoidal

wave

Sine wave

(half cycle)

Various

wave 1

Triangular

wave

Various

wave 2

Rectangular

wave

Charge/

discharge

waveform





6.0A

1ms

Table A

1

3 m2

t1 + m2 (t2-t1) +

m2 (t3-t2)

1

3

m

t 0 1

2

t

m

0

0 t

m

0 t

m

0 -t τ

i (t) = m e-t/τ m

0.368 m

2

1 t1+12+ (1-2) 2

(t2-t1)+ 2

2 (t3-t2)

1

3

1

3 1

3

1

3 m2

t

m2 t

1

2

m2 t

1

2

m2 t

t2 t3

m

0 t1

t

2

0

1

t2 0 t1 t3

2 1

m2 t 1

2

1 2 t + (1-2) 2 t

1

3

6



100,000 times)


(Fig. D)


applied.




used.

Standard 2t of fuse > (2t of inrush current/load ratio) .......... ..........Formula 4

Example : 2t of pulse = 0.012 A2s,

Pulse applied = 1 ms, Required load ratio = 20%

From Formula 4, Standard 2t of fuse > 0.012/0.2 = 0.06 (A2s)



of 1 ms (horizontal axis) and 0.06 A2s (vertical axis) from Fig. E (refer to the arrow shown in Fig.E).


JAG, with rated current of 0.8 A or more should be selected.


Determine the rated current of the micro fuse. The rated


Example : 2.5A meets the all requirement.






Fig. D

Fig. E

1

10

100

1000

10000

100000

1000000

0 10 20 30 40 50 60 70 80 90 100

Load ratio (%)

Num

ber

of

puls

e r

esis

tance (

cycle

)

0.001

0.01

0.1

1

10

100

1000

10000

0.0001 0.001 0.01 0.1 1 10 100

Fusing time (sec)

Joule

inte

gra

l (A

2s)

0.5A0.63A0.8A1.0A1.25A

1.6A2.0A2.5A3.15A4.0A

7







R









rate) and voltage specifications.According to item 2,2-2 in Fuse will explode during test. During fusing tests, please



voltage.





























for 90 seconds (at 20 ~ 30°C liquid temp.) will not be 9. Disposal damaged. When Micro Fuse are disposed of as waste or ―scrap‖, they


, Techno CareTM

, Clean should be treated as ―industrial waste‖. Micro Fuse contain

ThroughTM











8

MICRO FUSE

Size 3216

PRODUCTS DATA SHEET

UL/cUL approvedFile No. E170721

RoHS COMPLIANTLEAD FREE

Type JAH

No. P-JAH-002DATE 2008-10

Item

Catalog number

3.2 × 1.63.2 × 1.63.2 × 1.63.2 × 1.63.2 × 1.63.2 × 1.63.2 × 1.63.2 × 1.63.2 × 1.63.2 × 1.63.2 × 1.63.2 × 1.6

20020020020020020020020016015012080

Rated currentA

Internal resistancemΩ

(Typical)

Voltage dropmV

(Max.)

Rated voltageVDC

Breaking currentACase size

For the taping type, the packing code “NA” will be entered in .UL and cUL for the catalog numbers marked are being applied. (To be approved on March,2009)The catalog numbers without mark are approved by UL and cUL. (File No.E170721)

－２－

J A H

TypeJAH

Code7202

Code102132162202252322

Rated current 1.0 A1.25 A 1.6 A 2.0 A 2.5 A3.15 A

Code402502632802103133

Rated current 4.0 A 5.0 A 6.3 A 8.0 A10.0 A12.5 A

CodeNA

Package typef180 Reel

Code52

Case size3.2 × 1.6

RV72 V

Type JAH micro fuse is designed for circuit protection against excessive current in portable electronic equipment, electric circuit around battery, etc. because the demand for high capacity batteries is increasing.Wire material is adopted for fuse element, and the performance against rush current is increased in spite of compact design.Also, the ecology design of Type JAH is gentle because of complete lead-free.

1. Our original terminal construction eliminates Tombstone phenomenon. 2. Our original construction design provided excellent fusing and quick acting characteristics. 3. Especially, performance against rush current is excellent since wire material is used for fuse element.4. Surface temperature rise is 75°C or less when applying rated current for fusing. This offers less influence on the peripheral units.5. Small size of 3216 (3.2 × 1.6 × 1.4 mm) 6. Suitable for automatic mounting7. Precise dimensions allows high-density mounting and symmetrical construction of terminals provide “Self-Alignment”. 8. Resistance to soldering heat: Flow soldering 10 seconds at 260°C and Reflow soldering 5 seconds at 250°C respectively.9. A tape carrier of 8 mm width will be provided as a standard package material.10. Complete lead-free


Rated Current

Rated Voltage

Voltage Drop


(between terminals and case)


Breaking Capacity

Rating-40 ~ +125°C1.0–1.25–1.6–2.0–2.5–3.15–4.0–5.0–6.3–8.0–10.0–12.5 A

72 VDC

Refer to the list of standard products.

1000 MΩ or more

Fusing within 1 minute if the current is 200% of rated current.

Breaking voltage : 72 V

Breaking current : 50 A

7 2 0 2 8 0 2 N A 5 2



RATING

FEATURES

1.01.251.62.02.53.154.05.06.38.0

10.012.5

JAH 7202 102 52 JAH 7202 132 52 JAH 7202 162 52 JAH 7202 202 52 JAH 7202 252 52 JAH 7202 322 52 JAH 7202 402 52 JAH 7202 502 52 JAH 7202 632 52 JAH 7202 802 52 JAH 7202 103 52 JAH 7202 133 52

72 50

1279875584434261916108.23.8

Case size

3216

Case code

52

L W T

3.2±0.2 1.6±0.2 1.4 max 0.6±0.2

P

P

Ｌ

W

T

DIMENSIONSMain body : CeramicsTerminal : Tin plating (mm)

Size 3216

a

b

c

－３－



Apply 100% of rated current.

Breaking voltage : Rated voltageBreaking current : 50 A


Apply 200% of rated current. (Ambient temperature : 10 ~ 30°C) Insulation resistance between terminals and case (ceramics) Board supporting width : 90 mmBending speed : Approx. 0.5 mm/sDuration : 5 sBending : 3 mmApplied force : 20 NDuration : 10 sTool : R0.5Direction of the press : side faceSupporting dimension : 1.6 mmApplied force : 20 NDuration : 10 sTool : R0.5Direction of the press : thickness direction of productSolder : Sn–3Ag–0.5CuTemperature : 245 ± 3°Cmeniscograph methodSolder : JISZ3282 H60A, H60S, H63ATemperature : 230 ± 2°Cmeniscograph methodSolder : Sn–3Ag–0.5CuTemperature : 245 ± 3°CDipping : 3 sSolder : JISZ3282 H60A, H60S, H63ATemperature : 230 ± 2°CDipping : 3 sDipping (1 cycle)

Preconditioning : 100 ~ 150°C, 60 sTemperature : 265 ± 3°C, 6 ~ 7 s (260 ± 3°C, 10 s)

Reflow soldering (2 cycles)Preconditioning : 1-2 m, lower than 180°CPeak : 250 ± 5°C, 5 sHolding : 230 ~ 250°C, 30 ~ 40 sCooling : More than 2 m

Manual soldering (2 cycles)Temperature : 350 ± 10°CDuration : 3 ~ 4 sMeasure after 1 h left under room temperature and humidity.

Dipping rinseSolvent : Isopropyl alcoholDuration : 90 s

Frequency range : 10 ~ 55 ~ 10 Hz/mVibration amplitude : 1.5 mmDuration : 2 h in each of XYZ directions (total : 6 h)Peak value : 490 m/s2

Duration : 11 ms 6 aspects × 3 times (total : 18 times)–55 ± 3°C : 30 mRoom temperature : 2 ~ 3 m or less125 ± 2°C : 30 mRoom temperature : 2 ~ 3 m or lessRepeat above step for 10 cyclesTemperature : 85 ± 3°CHumidity : 85 ± 5% RHDuration : 1000 hTemperature : 85 ± 2°CApplied current : Rated current × 70%Duration : 1000 hTemperature : 85 ± 3°CHumidity : 85 ± 5% RHApplied voltage : rated current × 70% Duration : 1000 hTemperature : 125 ± 2°CDuration : 1000 h

Temperature rise shall not exceed 75°C.

Shall not open within 1 hour.

Arc shall not be continued.Marking shall be legible.

Voltage drop is below the value specified in CATALOG NUMBERS AND RATING.

Fusing within 1 minute

1000 MΩ or more

No mechanical damage.Resistance change after the test shall be within ± 20%.



Solder Wetting time : within 3s


Marking shall be legible.No mechanical damage.Resistance change after the test shall be within ± 20%.

Marking shall be legible.No mechanical damage.No significant irregularity in the appearance.




No mechanical damage.Resistance change after the test shall be within ± 20%. No mechanical damage.Resistance change after the test shall be within ± 20%.



Temperature rise

Current-carrying capacity

Clearing characteristics

Voltage drop

Fusing characteristics Insulation resistance

Electrode strength(Flexibility)

Shear test

Substrate bending test

Solderability(Solder Wetting time)

Solderability(new uniform coating of solder)


Solvent resistance

Vibration

Shock

Thermal shock

Moisture resistance

Load life

Moisture resistance load

Stability

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

a ac

b

Name

Fuse element

Space

Arc extinction

material

Terminal

Body

Marking

Internal solder

Material, standard, and treatment

Lead-free alloy

—

Silicone resin

Tin plating

Ceramics

Epoxy resin

Lead-free alloy

1.0

1.6

1.6

(mm)

(Reflow)

BodyMarking

Space

Arc extinctionmaterial

Fuse element

Internal solder

100 mm

33 mm

10 mm

1.4 mm



Copper layer : 70 µm

MARKING CONSTRUCTION


1.0 A1.25 A1.6 A2.0 A2.5 A

3.15 A

102132162202252322

: : : : : :


4.0 A 5.0 A 6.3 A 8.0 A10.0 A12.5 A

402502632802103133

: : : : : :

Terminal

PERFORMANCE

RECOMMENDED PAD DIMENSIONS STANDARD TEST BODY

－４－

FUSING CHARACTERISTICS I2T-T CHARACTERISTICS

DISTRIBUTION OF FUSING CHARACTERISTICS DISTRIBUTION OF FUSING TIME

JAH 7202 632NA52

Applied current (A)1 10 100 1000

0.01

0.1

1

10

Fus

ing

time

(s)

0.0001

0.001

100

JAH 7202 632NA52

Numbers of pcs

Fus

ing

time

(s)

0.0001

0.001

0.01

0.1

1

10



0 20 40 60 80 100

Reference Reference

1 1000

Applied current (A)

10 100

Fus

ing

time

(s)

0.0001

0.001

0.01

0.1

1

10

100

0.001 0.01 0.1 1 10

Fusing time (s)

0.0001 100

Joul

e in

tegr

al (

A2 s

)

1

10

100

1000

10000

0.01

0.1

100000

5.0

A6.

3 A

3.15

A4.

0 A

2.5

A2.

0 A

8.0

A10

.0 A

12.5

A

1.6

A1.

25 A

1.0

A

3.15 A

2.0 A2.5 A

4.0 A5.0 A6.3 A8.0 A10.0 A12.5 A

1.6 A

1.0 A1.25 A

－５－


1 ms

40 A

Der

atin

g fa

ctor

Temperature (°C)

DETERMINATION OF RATED VALUE AND SELECTION OF MICRO FUSE (TYPE JAH)

Determine the rated value of the micro fuse, and select the correct circuit protection element for your circuit. If you select the correct circuit protection element, safety of your circuit can be ensured.How to determine the rated value of the circuit protection element is described below:

Flow for fuse selection1. Measurement of circuit values

using actual device












Fuse selection

1. Measurement of circuit values using actual deviceBefore determining the rated value of the fuse, preliminarily measure the following using the actual device.1–1 Operating current

Using an oscilloscope or equivalents, measure the operating current of the circuit.1–2 Overload current

Using an oscilloscope or equivalents, measure the overload current that needs to break the circuit.1–3 Inrush current

Using an oscilloscope or equivalents, measure the inrush current of the circuit at power-on or power-off. In addition, determine the number of inrush current applied.

1–4 Category temperatureMeasure the ambient temperature of the fuse circuit.

EXAMPLE TO SELECT RATINGS OF TYPE JAH<Fuse selection>

Effective operating current : 2.8 AEffective overload current : 40 AInrush current waveform : Fig. A(Pulse width : 1 ms, Wave height : 40 A)Numbers to withstand inrush current : 100,000 timesCategory temperature : 85°C

2. Calculation from operating current2–1 Measurement of operating current

Using an oscilloscope or equivalents, measure operating current (effective current) of the actual circuit.Example : Effective operating current = 2.8 A

2–2 Derating1Temperature derating factor

Using Fig. B, find the temperature derating factor correspond to the temperature.2Rated derating factor


Use Formula 1 to calculate the rated current of the fuse to be used for the circuit.Rated current of fuse ≥ Operating current/(1 × 2) ... Formula 1

Example : Category temperature = 85°C, Operating current = 2.8 A1Temperature derating factor = 0.76 (Refer to Fig. B.)2Rated derating factor = 0.78 (Constant irrespective of temperature)Calculation using Formula 1 :Rated current ≥ 2.8/(0.76 × 0.78) = 4.72 A

The above calculation result shows that the fuse with rated current of 4.72 A or more should be selected for this circuit. Type JAH, with rated current of 5.0 A or more can be selected.

Fig. B

JAH temperature derating

-50 -25 0 25 50 75 100 1250

20

40

60

80

100

120

－６－

1ms

40A

3. Calculation from overload current3–1 Measurement of overload current

Using oscilloscope or equivalents, measure the overload current that needs to break the circuit.Example : Effective overload current = 40 A

3–2 Calculation from overload currentDetermine the rated current so that the overload current can be 2.0 times larger than the rated current.Use Formula 2 to calculate the rated current of the fuse.


Example : Overload current = 40 AUse Formula 2 to calculate the rated current.Rated current ≤ 40/2.0 = 20 A

The above calculation result shows that the fuse with rated current of 20 A or less should be selected for this circuit.

Type JAH, with rated current of 12.5 A or less can be selected.

4. Calculation from inrush current4–1 Measurement of inrush current waveform

Using an oscilloscope or equivalent, measure the waveform of the inrush current of the actual circuit.

4–2 Creation of approximate waveformGenerally, the waveform of inrush current is complicated. For this reason, create the approximate waveform of inrush current as shown on Fig. C to simplify calculation.

4–3 Calculation of I2t of inrush currentCalculate I2t (Joule integral) of the approximate waveform.The formula for this calculation depends on the approximate waveform. Refer to Table A.Example : Pulse applied = 1 ms, Peak value = 40 A

Approximate waveform = Triangular waveSince the approximate waveform is a triangular wave, use the following formula for calculation.I2t of rush current = 1/3 × Im2 × t ... Formula 3 (Im : Peak value, t : Pulse applying time)Use Formula 3 to calculate I2t of the rush current: I2t = 1/3 × 40 × 40 × 0.001 = 0.533 (A2s)

Fig. C : Inrush current waveformRed line : Actual measurement waveformBlack line : Approximate waveform


Name Waveform

Trapezoidalwave

Variouswave 1

Variouswave 2

Charge/dischargewaveform

I t2

13I ( )+1 I 2 I –1 I 2

2 tt

13 tIm Im ( )+ +–2

13 Im2

21 t 2 t 1

( )–t 3 t 2

13

13

13+

+ I 12

I 22

( )I –1 I 22

( )–t 2 t 1

I +1 I 2

( )–t 3 t 2

t 1

0 t3t2t1Im

I2

0 t3t2t1

I1

I1I2

0 t

ImIm

0 -t

0.368

i (t) = Im e-t/

12 Im 2

Name Waveform

Sine wave(1 cycle)

Triangularwave

Rectangularwave

I t2

12 tIm 2

12 tIm 2

13 tIm 2

I 2 20t

tIm 2

Sine wave(half cycle)

Following formula is generally used for calculation of I2t as i(t) equal to current.

t = ∫ (t)dt

Table A

i

０１２

tIm

０ tIm

０

Im

０ tIm

t２

－７－

100

1000

10000

100000

10

1

1000000

Num

ber

of p

ulse

res

ista

nce

(cyc

le)

4–4 Search of load ratio1Set up the number of cycles to withstand. (generally

100,000 times)2Obtain the load ratio from Pulse resistance characteristics.

(Fig. D)

Example : 100,000 times is required against inrush current applied.



Use Formula 4 to calculate the standard I2t for the fuse to be used.

Standard I2t of fuse > (I2t of inrush current/load ratio) .......... ..........Formula 4

Example : I2t of pulse = 0.533 A2s, Pulse applied = 1 ms, Required load ratio = 10%

From Formula 4,Standard I2t of fuse > 0.533/0.1 = 5.33 (A2s)


Since the rush pulse applied is 1 ms, obtain the intersection of 1 ms (horizontal axis) and 5.33 A2s (vertical axis) from Fig. E (refer to the arrow shown in Fig. E).

Select a fuse whose curve is above the intersection. Type JAH, with rated current of 6.3 A or more should be selected.

5. Final determination of rated valueDetermine the rated current of the micro fuse. The rated current should meet all the calculation results.

Example : 6.3 A meets the all requirement.

6. Operation check using actual deviceAfter selecting the rating, confirm if the device works properly under the pre-determined conditions.

Fig. D


Load ratio (%)

10 20 30 40 50 60 70 80 900 100

Fig. E


Fusing time (s)

0.001 0.01 0.1 1 100.0001 100

Joul

e in

tegr

al (

A2 s

)

1

100

10

1000

0.01

0.1

100000

10000

3.15 A

2.0 A2.5 A

4.0 A5.0 A6.3 A8.0 A10.0 A12.5 A

1.6 A

1.0 A1.25 A

－８－

Application Notes for Micro Fuse1. Circuit Design

Micro Fuse should be designated only after confirming operating conditions and the Micro Fuse performance characteristics.When determining the rated current, be sure to observe the following items :

(1) Micro Fuse should always be operated below the rated current (the value considered in the temperature derating rate) and voltage specifications.

(2) Micro Fuse should always be operated below the rated voltage.

(3) Micro Fuse should be selected with correct rated value to be fused at overload current.

(4) When Micro Fuse are used in inrush current applications, please confirm sufficiently inrush resistance of Micro Fuse.

(5) Please do not apply the current exceeding the breaking current to Micro Fuse.

(6) Use Micro Fuse under the condition of category temperature.

(7) Micro Fuse should not be used in the primary power source.

Micro Fuse should be selected by determining the operating conditions that will occur after final assembly, or estimating potential abnormalities through cycle testing.

2. Assembly and MountingDuring the entire assembly process, observe Micro Fuse body temperature and the heating time specified in the performance table. In addition, observe the following items :

(1) Mounting and adjusting with soldering irons are not recommendable since temperature and time control is difficult.In case of emergency for using soldering irons, be sure to observe the conditions specified in the performance table.

(2) Micro Fuse body should not have direct contact with a soldering iron.

(3) Once Micro Fuse mounted on the board, they should never be remounted on boards or substrates.

(4) During mounting, be careful not to apply any excessive mechanical stresses to the Micro Fuse.

3. SolventsFor cleaning of Micro Fuse, immersion in isopropyl alcohol for 90 seconds (at 20 ~ 30°C liquid temp.) will not be damaged.If organic solvents (Pine AlphaTM, Techno CareTM, Clean ThroughTM, etc.) will be applied to the Micro Fuse, be sure to preliminarily check that the solvent will not damage the Micro Fuse.

4. Ultrasonic CleaningUltrasonic cleaning is not recommended for Micro Fuse.This may cause damage to the Micro Fuse such as broken terminals which results in electrical characteristics effects, etc. depending on the conditions.If Ultrasonic cleaning process must be used, please evaluate the effects sufficiently before use.

5. Caution During Usage (1) Micro Fuse with electricity should never be touched. Micro

Fuse with electricity may cause burning due to the Micro Fuse high temperature. Also, in case of touching Micro Fuse without electricity, please check the safety temperature of Micro Fuse.

(2) Protective eyeglasses should always be worn when performing fusing tests. However, there is a fear that Micro Fuse will explode during test. During fusing tests, please cover particles not to fly outward from the board or testing fixture. Caution is necessary during usage at all times.

6. Environmental Conditions (1) Micro Fuse should not be operated in acid, alkali, or active

gas atmosphere. (2) Micro Fuse should not be vibrated, shocked, or pressed

excessively. (3) Micro Fuse should not be operated in a flammable or

explosive atmosphere. (4) After mounting Micro Fuse on a board, covering Fuses with

resin may affect to the electric characteristics of the Micro Fuse. Please be sure to evaluate it in advance.

7. EmergencyIn case of fire, smoking, or offensive odor during operation, please cut off the power in the circuit or pull the plug out.

8. Storage (1) Micro Fuse should be stored at room temperature (-10°C ~

+40°C) without direct sunlight. Direct sunlight may cause decolorization and deformation of the exterior and taping.Also, there is a fear that solderability will be remarkably lower in high humidity.

(2) If the products are stored for an extended period of time, please contact Matsuo Sales Department for recommendation. The longer storage term causes packages and tapings to worsen. If the products are stored for longer term, please contact Matsuo Sales Department for advice.

(3) The products in taping, package, or box should not be given any kind of physical pressure. Deformation of taping or package may affect automatic mounting.

9. DisposalWhen Micro Fuse are disposed of as waste or “scrap”, they should be treated as “industrial waste”. Micro Fuse contain various kinds of metals and resins.

10. SamplesMicro Fuse received as samples should not be used in any products or devices in the market. Samples are provided for a particular purpose such as configuration, confirmation of electrical characteristics, etc.

The specifications on this catalog are subject to change without prior notice. Please inquire of our Sales Department to confirm the specifications prior to use.

Overseas Sales Dep. :

USA :

Head Office :

URL :

5-3, 3-Chome, Sennari-cho, Toyonaka-shi, Osaka 561-8558, Japan

Matsuo Electronics of America, Inc. 2134 Main Street, Suite 200, Huntington Beach, CA 92648

5-3, 3-Chome, Sennari-cho, Toyonaka-shi, Osaka 561-8558, Japan

http://www.ncc-matsuo.co.jp/


Tel : 06-6332-0883

Tel : 714-969-2491

Tel : 06-6332-0871

Fax : 06-6332-0920

Fax : 714-960-6492

Fax : 06-6331-1386

Type JAH L Series micro fuse is designed for circuit protection against excessive current in portable electronic equipment, electric

circuit around battery, etc. because the demand for high capacity batteries is increasing.

Wire material is adopted for fuse element, and the performance against rush current is improved in spite of compact design.

Also, the ecology design of Type JAH L Series is environmentally friendly because of its complete lead-free.

1. Our original terminal construction eliminates Tombstone phenomenon.

2. Our original construction design provides excellent fusing and quick acting characteristics.

3. Especially, performance against rush current is excellent since wire material is used for fuse element.

4. Surface temperature rise is 75°C or less when applying rated current for fusing. This gives little influence to the peripheral units.

5. Small size of 3216 ( 3.2×1.6×1.2mm )



8. Resistance to soldering heat: Flow soldering 10 seconds at 260°C and Reflow soldering 5 seconds at 250°C respectively.

9. A tape carrier of 8 mm width will be provided as a standard package material.


FEATURES


August, 2010

RATING


Type JAH L Series

J A H Ｌ 3 2 0 2 1 0 3 N A 5 2

Type Series Code RV Code Rated current Code Rated current Code Package type Code Case size

202 2.0 A 632 　6.3 A NA φ180 Reel 52 3.2×1.6

252 2.5 A 802 　8.0 A

322 3.15A 103 10.0 A402 4.0 A 133 12.5 A

502 5.0 A

JAH 3202 32VL

Voltage drop

mV

(Max.)

　JAH L 3202 202 52 3.2×1.6 2.0 58 200

　JAH L 3202 252 52 3.2×1.6 2.5 44 200

　JAH L 3202 322 52 3.2×1.6 3.15 34 200

　JAH L 3202 402 52 3.2×1.6 4.0 26 200

　JAH L 3202 502 52 3.2×1.6 5.0 22 200

　JAH L 3202 632 52 3.2×1.6 6.3 16 160

　JAH L 3202 802 52 3.2×1.6 8.0 10 150

　JAH L 3202 103 52 3.2×1.6 10.0 8.2 120

　JAH L 3202 133 52 3.2×1.6 12.5 3.8 80

For the taping type, the packing code “NA” will be entered in .

Catalog numbers are approved by UL and cUL. (File No.E170721)

32 50

Catalog number Case size

Internal resistance

mΩ

(Typical)

Breaking current

A

Rated current

A

Rated voltage

VDC

Item


Rated Current

Rated Voltage

Voltage Drop


(between terminals and case)


Cleaning CharacteristicsBreaking current : 50 A

32VDC

Rating

-40 ～＋125°C

Fusing within 1 minute if the current is 200% of rated current.

2.0－2.5－3.15－4.0－5.0－6.3－8.0－10.0－12.5A

Breaking voltage : 32 V

Refer to the list of standard products.

1000 MΩ or more

1

CONSTRUCTION

STANDARD TEST BOARD

MARKING


DIMENSIONS

(mm)

a 1.0

b 1.6

c 1.6

(Reflow)

Size 3216

100mm

33mm

1.4mm


Board thickness：1.6mm

Copper layer：70m

10mmGlass epoxy body on one side Board thickness：1.6mm Copper layer：70m

L

W １０３

T

P

Main body : Ceramics



3216 52 3.2 ± 0.2

1.6 ± 0.2 1.2max. 0.6

± 0.2


202 : 2.0A

252 : 2.5A

322 : 3.15A

402 : 4.0A

502 : 5.0A

632 : 6.3A

802 : 8.0A

103 : 10.0A

133 : 12.5A


Fuse element Lead-free alloy

Arc extinction

materialSilicone resin


Body Ceramics

Marking Laser printing

Internal solder Lead-free alloy

Terminal

Body

１０３

Marking

Internal solder

Arc extinction material

Fuse element

2









6 Insulation resistance 1000 MΩ or more Insulation resistance between terminals and case (ceramics)





Applied force : 20 N Duration : 10 sec. Tool : R0.5 Direction of the press : side face


Supporting dimension : 1.6 mm Applied force : 20 N Duration : 10 sec. Tool : R0.5 Direction of the press : thickness direction of product

10 Solderability (Solder Wetting time) Solder Wetting time : within 3sec.







12 Resistance to soldering heat Marking shall be legible. No mechanical damage. Resistance change after the test shall be within ± 20%.

Dipping (1 cycle) Preconditioning : 100 ~ 150°C, 60 sec. Temperature : 265 ± 3°C, 6 ~ 7 sec.

(260 ± 3°C, 10 sec.) Reflow soldering (2 cycles)

Preconditioning : 1-2 m, lower than 180°C Peak : 250 ± 5°C, 5 sec. Holding : 230 ~ 250°C, 30 ~ 40 sec. Cooling : More than 2 min.

Manual soldering (2 cycles) Temperature : 350 ± 10°C Duration : 3 ~ 4 sec. Measure after 1 hour left under room temperature and humidity.




Frequency range : 10 ~ 55 ~ 10 Hz/m Vibration amplitude : 1.5 mm Duration : 2 hours in each of XYZ directions (total : 6 hours)


Peak value : 490 m/s2









Temperature : 85 ± 3°C Humidity : 85 ± 5% RH Applied voltage : rated current × 70% Duration : 1000 hours



PERFORMANCE

3


I2T - T CHARACTERISTICS



参考値参考値

JAH L 3202 632NA52 JAH L 3202 632NA52

12.5

A10A

8.0

A

5.0

A6.3

A

4.0

A3.1

5A

2.5

A2.0

A

0.0001

0.001

0.01

0.1

1

10

100

1 10 100 1000

Applied current (A)

Fu

sin

g tim

e (

s)

Joule

intr

gra

l (A

2s)

12.5

A

10.0

A

8.0

A

5.0A

6.3

A

4.0A3.15A2.5A

2.0A

0.01

0.1

1

10

100

1000

10000

0.0001 0.001 0.01 0.1 1 10 100

Fusing time (s)

0.0001

0.001

0.01

0.1

1

10

100

1 10 100 1000

Applied current (A)

Fu

sin

g tim

e (

s)

0.0001

0.001

0.01

0.1

1

10

0 5 10 15



Numbers of pcs

Fusin

g t

ime

(se

c)

4

Determine rated value of micro fuse, and select correct circuit protection element for your circuit. If you select correct circuit protection element, safety of your circuit can be ensured. How to determine rated value of circuit protection element is described below:



Measure circuit values, such as operating current of circuit.


From obtained operating current and the category temperature, calculate minimum rated value to determine applicable fuse.


From obtained overload current, calculate the maximum rated value to determine applicable fuse.


From inrush current, calculate minimum rated value to determine applicable fuse.


From the calculation results of steps 2 through 4, determine rated value.


After selecting rating, confirm if device works properly under pre-determined conditions.

Fuse selection


Before determining rated value of fuse, preliminarily measure following condition by using the actual device.


Using an oscilloscope or equivalents, measure operating current of circuit.


Using an oscilloscope or equivalents, measure the overload current that needs to break circuit.


Using an oscilloscope or equivalents, measure inrush current of circuit at power-on or power-off. In addition, determine

number of inrush current applied.


Measure ambient temperature of fuse circuit.

EXAMPLE TO SELECT RATINGS OF TYPE JAH L Series

<Fuse selection>


Effective overload current : 40 A


(Pulse width : 1 ms, Wave height : 40 A)





Using an oscilloscope or equivalents, measure operating current (effective current) of actual circuit.


2–2 Derating


Using Fig. B, find temperature derating factor correspond to temperature.



Use Formula 1 to calculate rated current of the fuse to be used for circuit.

Rated current of fuse ≥ Operating current/(①×②) ... Formula 1





Rated current ≥ 2.8/(0.76×0.78) = 4.72 A


Type JAH L Series, with rated current of 5.0 A or more can be selected.

DETERMINATION OF RATED VALUE AND SELECTION OF MICRO FUSE ( TYPE JAH L Series )

1ms

40Ａ


0

20

40

60

80

100

120

-50 -25 0 25 50 75 100 125

Temperature()

Dera

ting f

acto

r (%

)

JAHL temperature

derating

Fig. B

5



Using oscilloscope or equivalents, measure overload current that needs to break circuit.

Example : Effective overload current = 40 A


Determine rated current so that overload current can be 2.0 times larger than rated current.

Use Formula 2 to calculate rated current of fuse.


Example : Overload current = 40 A


Rated current ≤ 40/2.0 = 20 A

The above calculation result shows that the fuse with rated current of 20 A or less should be selected for this circuit.

Type JAH L Series, with rated current of 12.5 A or less can be selected.



Using an oscilloscope or equivalent, measure waveform of inrush

current of actual circuit.


Generally, waveform of inrush current is complicated. For this reason,




Calculate 2t (Joule integral) of approximate waveform.


Refer to Table A.

Example : Pulse applied = 1 ms, Peak value = 40 A




2t of rush current = 1/3 × m2 × t ... Formula 3


Use Formula 3 to calculate 2t of the rush current:

2t = 1/3 × 40 × 40 × 0.001 = 0.533 (A2s)




2 t

Sine wave

(1 cycle )

Trapezoidal

wave

Sine wave

(half cycle)

Various

wave 1

Triangular

wave

Various

wave 2

Rectangular

wave

Charge/

discharge

waveform


1ms

40A




Table A

m

t 0 1

2

t

m

0

0 t2

m

0 t

m

0 -t τ

i (t) = m e-t/τ m

0.368 m

2

1 t1+12+ (1-2) 2

(t2-t1)+ 2

2 (t3-t2)

1

3

1

3 1

3

1

3 m2

t

m2 t

1

2

m2 t

1

2

m2 t

t2 t3

m

0 t1

t

2

0

1

t2 0 t1 t3

2 1

m2 τ 1

2

1 2 t + (1-2) 2 t

1

3

1

3 m2

t1 + m2 (t2-t1) +

m2 (t3-t2)

1

3

6


①Set up number of cycles to withstand. (generally

100,000 times)

②Obtain load ratio from Pulse resistance characteristics.

(Fig. D)


applied.



Use Formula 4 to calculate the standard 2t for the fuse to be

used.

Standard 2t of fuse > (2t of inrush current/load ratio) ..........

..........Formula 4

Example : 2t of pulse = 0.533 A2s,

Pulse applied = 1 ms, Required load ratio = 10%

From Formula 4,

Standard 2t of fuse > 0.533/0.1 = 5.33 (A2s)



of 1 ms (horizontal axis) and 5.33 A2s (vertical axis) from Fig.

E (refer to the arrow shown in Fig. E).

Select a fuse whose curve is above the intersection. Type JAH

L Series, with rated current of 6.3 A or more should be selected.


Determine the rated current of micro fuse. Rated


Example : Rated current of 6.3 A～12.5A meets the all requirement.


After selecting rating, confirm if the device works properly

under pre-determined conditions.



Fig. D

Fig. E

Nu

mb

er

of

pu

lse

re

sis

tan

ce

(cycle

)

10

100

1000

10000

100000

1000000

0 10 20 30 40 50 60 70 80 90 100

Load ratio (%)

Fusing time (s)

5.0A

6.3

A

4.0A

3.15A2.5A

2.0A

0.01

0.1

1

10

100

1000

10000

0.0001 0.001 0.01 0.1 1 10 100

Joule

inte

gra

l (A

2s)

8.0

A

10.0

A12.5

A

7







R












voltage.

(3) Micro Fuse should be selected with correct rated value to 6. Environmental Conditions be fused at overload current. (1) Micro Fuse should not be operated in acid, alkali, or active

(4) When Micro Fuse are used in inrush current applications, gas atmosphere.












performance table. In addition, observe the following items : +40°C) without direct sunlight. Direct sunlight may cause

(1) Mounting and adjusting with soldering irons are not decolorization and deformation of the exterior and taping.

recommendable since temperature and time control is Also, there is a fear that solderability will be remarkably

difficult. lower in high humidity.

In case of emergency for using soldering irons, be sure to (2) If the products are stored for an extended period of time,

observe the conditions specified in the performance table. please contact Matsuo Sales Department for

(2) Micro Fuse body should not have direct contact with a recommendation. The longer storage term causes

soldering iron. packages and tapings to worsen. If the products are stored

(3) Once Micro Fuse mounted on the board, they should never for longer term, please contact Matsuo Sales Department

be remounted on boards or substrates. for advice.

(4) During mounting, be careful not to apply any excessive (3) The products in taping, package, or box should not be

mechanical stresses to the Micro Fuse. given any kind of physical pressure. Deformation of taping


3. Solvents For cleaning of Micro Fuse, immersion in isopropyl alcohol 9. Disposal for 90 seconds (at 20 ~ 30°C liquid temp.) will not be When Micro Fuse are disposed of as waste or “scrap”, they

damaged. should be treated as “industrial waste”. Micro Fuse contain


, Techno CareTM

, Clean various kinds of metals and resins.

ThroughTM

, etc.) will be applied to the Micro Fuse, be sure

to preliminarily check that the solvent will not damage the 10. Samples Micro Fuse. Micro Fuse received as samples should not be used in any

products or devices in the market. Samples are provided

4. Ultrasonic Cleaning for a particular purpose such as configuration, confirmation

Ultrasonic cleaning is not recommended for Micro Fuse. of electrical characteristics, etc.

This may cause damage to the Micro Fuse such as broken





8

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