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November 2003

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Subject:
Re: IPC-2221 Rev A Coupon Design
From:
Gary Ferrari <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 7 Nov 2003 17:22:27 EST
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multipart/alternative
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Robert,

The coupons are to depict the design. So if you have plated through holes
that are connected to an internal plane, the coupon should also have that pad
stack connected on the appropriate layer. If you are making it with a thermal
connection then the same type and sized connection should be made in the coupon.
If you have plane connections that are close to each other than the coupon
should use adjacent pad stacks connected to the internal planes. The purpose of
the coupon is to represent the design as closely as possible.

Regards,

Gary Ferrari
Ferrari Technical Services
860-350-9300

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