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PCB footprints

Discussion in 'Electronic Basics' started by Matt Cohen, Jul 20, 2004.

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  1. Matt Cohen

    Matt Cohen Guest

    I'm preparing a board design to send to a PCB vendor. I've never done
    this before. I was told I need to supply them with the footprint for
    each part. Now, some parts that I have come in packages like TQFP,
    which I know are not standard, so I found a detailed drawing of the
    particular package. But what about packages like TO-263 for a voltage
    regulator? Are all packages not standard, should I supply drawings
    for every part? What about capacitors? I don't know a footprint (or
    even part number) for them, I just need small surface mount caps. Any
    advice would be appreciated.
  2. Tom Biasi

    Tom Biasi Guest

    Hi Matt,
    The vendor will only put on copper what you give him.(her, it)
    All footprints need to be to your specs on the original drawings.
    The packages that you mention as well as any other components have footprint
    Look them up an reflect them in your drawings.
    If they have a spec number, they *are* standard.
    Good Luck,
  3. Randy Day

    Randy Day Guest

    Just a thought; does the vendor want the
    footprints for silkscreening purposes?
    Maybe they don't want them for anything
    actually technical...
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