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August 1999

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TechNet <[log in to unmask]>
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Date:
Tue, 17 Aug 1999 13:59:11 EDT
Reply-To:
"TechNet E-Mail Forum." <[log in to unmask]>, [log in to unmask]
Subject:
Re: Via hole fill...
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[log in to unmask]
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Hi Steve and all
The requirements that say a hole does not need to be filled is a fact
HOWEVER if it is filled it must be at least 75% filled.  This value is
a result of a great deal of data and was recently re-affirmed by 001.

The reliability of a hole is the best when either completely (>75%)filled
or completely empty.  Fill that is inbetween has proven to degrade
reliability.

Susan Mansilla
Robisan Lab

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