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When to use oval and when to use round pads?

Discussion in 'Electronic Design' started by Michael Noone, Mar 26, 2005.

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  1. Hi - I've been doing a good deal of PCB drawing with Eagle over the last
    couple of days - and I've noticed something that I think is kind of odd.
    While most components use round pads, some use oval shaped pads. For
    example - all dual inline components that I've looked at in Eagle use oval
    pads. So initially I was thinking that they were a way to keep pads
    distanced but also leave plenty of space to solder - but then I noticed
    some other components with oval pads - like relays whose pins were very
    widely spaced. So - is there an advantage of one pad style over the other
    that I'm just not thinking of? Thanks!

    -Michael J. Noone
  2. Pooh Bear

    Pooh Bear Guest

    Oval pads for DIL ICs used to be popular when routing tracks between pins.

    There's no special reason. I used to use ' squarish ' pads for ICs many yrs
    ago since it gave more pcb land for the pad itself. That's of some importance
    when using SRBP material.

  3. Leon Heller

    Leon Heller Guest

    I often use oval pads for DIL chips on my home-made PCBs; I can get one
    track between them without any problems and they are more robust then round
    ones. I use round pads on PTH boards, of course.

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