soldering building permanent circuits. soldering accomplishes two things electrical connections...
TRANSCRIPT
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Soldering
Building permanent circuits
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Soldering accomplishes two things
• Electrical connections
• Mechanical connections
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Tools you Need
• Wire cutters
• Wire strippers
• Soldering iron
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Optional Tools
• Lead bender
• Exacto knife
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Solder
• An alloy of 60% tin and 40% lead
• Low melting point
• Fuses metal together
• Rosin flux core
• Lead-free and silver solder
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The Process
• Form leads
• Insert into PCB
• Solder leads to pads
• Trim excess leads
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Forming Leads
Some leads are ready to insert into the PCB
Some leads need to be formed
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Ready Formed Leads
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Leads that need to be Formed
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Cutting from a Row
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Stripping Wire
Correct Gauge Pull Wire
Wire Stripped of Insulation
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Insert Components
• Usually Flush
• Bend Leads or Tape
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Holding Component in Place
Spread Leads Slightly Tape Down
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Before You Solder
Wipe Tip Tin Tip
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Don’t Jab!
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Soldering
• Briefly heat pad and lead
• Apply solder to pad, lead, and iron
• Remove solder and iron (in that order)
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Heat Pad and Lead
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IC Sockets
• Use IC sockets
• Solder opposing IC socket pins
• Confirm flush
• Rework if necessary
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Soldering Opposing Pins
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Confirm Flush
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Rework if Necessary
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Strain Relief
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Trim Excess Leads
Beware of flying leads
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The lead is cut at the solder
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What’s Next?
Check Your Work!