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PCB Hole spacing for kinked thru-hole lead

Discussion in 'Circuit Simulation & PCB Design' started by dknguyen, Feb 12, 2018 at 12:04 PM.

  1. dknguyen

    dknguyen Well-Known Member

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    Hey guys:

    When you are designing a footprint for a thru-hole component with pre-bent kinked leads, what hole spacing do you use? Do you use the nominal lead spacing or do you use the spacing of the kink?

    I never gave this much though before because it never really mattered but this is going to be pick-and-placed.
     

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  2. ronsimpson

    ronsimpson Well-Known Member Most Helpful Member

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    The kink is above the board. Do not change the board. Spacing is "A"- lead diameter. (About A)
    upload_2018-2-12_13-16-17.png
     
  3. dknguyen

    dknguyen Well-Known Member

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    Are you sure about that? Because with the kink above the board, that diode sits 1cm above the board which seems pretty high to be.
     
  4. dave

    Dave New Member

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  5. ronsimpson

    ronsimpson Well-Known Member Most Helpful Member

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    Kinks are used to keep hot parts from burning the board. I see then on 2w resistors. Heat transfers to air better when the part is up in the flow.
     
  6. dknguyen

    dknguyen Well-Known Member

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    Hmmm, I'll have to get another part then since that exceeds my board height limit.
     
  7. ronsimpson

    ronsimpson Well-Known Member Most Helpful Member

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    Cut the kinks off. Or use a tool to unbend the wires.
    upload_2018-2-12_15-29-44.png
     
  8. dknguyen

    dknguyen Well-Known Member

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    That won't work for the assembler or the pick and place machine.
     

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