8B Series Sealed Sub-Miniature Pushbutton Switches(SMT)

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SPECIFICATIONS

CONTACT RATING: Dependent upon contact material See Page 129..

MECHANICAL LIFE: 50,000 make-and-break cycles.

CONTACT RESISTANCE: 20 m O max. initial @ 2-4VDC

1 OOmA for both silver and gold plated contacts.

INSULATION RESISTANCE: 1,000 MO min.

DIELECTRIC STRENGTH: 1,000 Vrms min.@sea level.

OPERATING TEMPERATURE: -30°C to 85°C.

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MATERIALS

CASE & BUSHING: Glass filled nylon 6/6,flame retardant,

heat stabilized (UL94v-O).

PLUNGER: Thermoplastic Polyester (UL 94V-O),

with intenal 0-ring seal.

SWITCH SUPPORT: Brass,tin plated.

CONTACT/ TERMINALS: Silver or gold plated copper alloy.

(See Page 129)

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MODEL NO. TERMINATIONS

DDDD------DDD

Model NO. 88S8 ON-(ON) 88S9 OFF-(ON)

Terminations MT (STD) Right angle, surface mount MZ (STD)

TERMINAL SEAL RoHS PLATING SOLDERING

D 日 D

Terminal plating Seal RoHS soldering Q Silver E EPOXY (std) S RoHS & Lead Free R Gold C Gold over silver

8B Series Sealed Sub-Miniature Pushbutton Switches(SMT)

「 SWITCH FUNCTlON l

UL/CSA SWITCH FUNCTION CONNECTED TERMINALS / SCHEMATIC

NO. MODEL

MODEL POS.1 POS.2 POS.1 POS.2

POLES NO. NO.

A 矗 』 矗SP 2-1 /

2(COMM) 2-3 \

(COMM) Q28818 88S8 ON (ON) NC 1 • 3 NO NC1 • 3NO

Q28819 88S9 OFF (ON) OPEN 1-3 1 占 3

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MAX

SPDT Part No. Shown : 8BS8MTRE

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SPDT Part No. Shown : 8BS8MZRE

EPOXY SEAL

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P.C. MOUNTING

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8B Series Sealed Sub-Miniature Pushbutton Switches(SMT)

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PACKAGING

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;g Switches available on embossed antistatic tape and reels.

iVJ Tape and cover strip are conductive for use near statically sensitive components.

1.238 (L -•-.087 7 广31.44

12.992 330.00

.795 20.20

SCALE: 10: 1 J L1.476 37.50

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REEL INFORMATION

SCALE: 1 : 1 QUANTITY PER REEL I 500 / pcs

8B Series Sealed Sub-Miniature Pushbutton Switches(SMT)

＼ CONTACT PLATING TERMINAL PLATING RATINGS Q Silver Gold flash over silver 3 Amps with resistant load @ 120VAC or 28VDC C Gold over Silver Gold over silver 1 Amps with resistant load @ 250VAC R Gold Gold 0.4 Volt - Amps (VA) max. @ 20V max. (AC or DC)

「 SOLDERINGPROCESSESlREFLOW SOLDERING: Use soldering iron of 30 watts, controlled at 350°C

approximately 5 seconds while applying solder. WAVE SOLDERING: Recommended Soldering Temperature: 260士5°C

Duration of Solder Immersion: Max 5 sec. (PCB is 1.6mm in thickness) SOLDERING: Vapor phase & IR-reflow soldering can be applied.

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Temperature Profile

Zone Room Temperature Time (Sec) Pre-heat (A) 150°C Min 120s

Soak (B) 150°c - 200°c Min 150s

Peak (C) 200°c ~ 235°c Min 30s

Peak (D) 235°C ~ 260°C Min 40s

Peak (E) 260°C Max5s

(°C)

250-

200

150

100

50

Peak: 260°C

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A

B

C D E

Room

Temperature Time (Sec)