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Soldering

Soldering. Building permanent circuits. Soldering accomplishes two things. Electrical connections Mechanical connections. Tools you Need. Wire cutters Wire strippers Soldering iron. Optional Tools. Lead bender Exacto knife. Solder. An alloy of 60% tin and 40% lead Low melting point

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Soldering

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  1. Soldering Building permanent circuits

  2. Soldering accomplishes two things • Electrical connections • Mechanical connections

  3. Tools you Need • Wire cutters • Wire strippers • Soldering iron

  4. Optional Tools • Lead bender • Exacto knife

  5. Solder • An alloy of 60% tin and 40% lead • Low melting point • Fuses metal together • Rosin flux core • Lead-free and silver solder

  6. The Process • Form leads • Insert into PCB • Solder leads to pads • Trim excess leads

  7. Forming Leads Some leads are ready to insert into the PCB Some leads need to be formed

  8. Ready Formed Leads

  9. Leads that need to be Formed

  10. Cutting from a Row

  11. Stripping Wire Correct Gauge Pull Wire Wire Stripped of Insulation

  12. Insert Components • Usually Flush • Bend Leads or Tape

  13. Holding Component in Place Spread Leads Slightly Tape Down

  14. Before You Solder Tin Tip Wipe Tip

  15. Don’t Jab!

  16. Soldering • Briefly heat pad and lead • Apply solder to pad, lead, and iron • Remove solder and iron (in that order)

  17. Heat Pad and Lead

  18. IC Sockets • Use IC sockets • Solder opposing IC socket pins • Confirm flush • Rework if necessary

  19. Soldering Opposing Pins

  20. Confirm Flush

  21. Rework if Necessary

  22. Strain Relief

  23. Trim Excess Leads Beware of flying leads

  24. The lead is cut at the solder

  25. What’s Next? Check Your Work!

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