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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.

    Graham
     
  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.

    Leon
     
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