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January 1998

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Steve Schrader <[log in to unmask]>
Date:
Fri, 9 Jan 1998 12:45:25 -0600
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"TechNet Mail Forum." <[log in to unmask]>, Neil Diamond <[log in to unmask]>
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From:
Neil Diamond <[log in to unmask]>
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Try the IPC website <http:\\www.ipc.org>.
There is a land pattern calculator for customizing along with some standard
patterns.

I would recommend verifying the land pattern against the manufacturer's
part spec.  I have found there can be quite a variance from one product to
another. Do a double check if you are using Xlinx parts.  If your design is
dense, you may not find a generic land pattern will work for you.  Then you
can use the calculator to customize the land pattern to your standards or
process.

Good Luck!
Neil D...

At 01:26 PM 1/9/98 -0500, you wrote:
>Our CAD designers are having trouble finding IPC recommended landpatterns
>for TQFP devices.  Does anyone have any information that might be
>useful?
>

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