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April 2000

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Subject:
From:
Werner Engelmaier <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Sat, 15 Apr 2000 10:59:42 EDT
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Hi Jason,
You do give us any indication what type of failure your module suffered, how
long after shipping it was returned, what the application (use environment)
is.
I take it you need your tests to determine the source of failure. You need to
first do a failure mode analysis (FMA)--this will tell you where the failure
is, what has failed, and typically (but not always) also will tell you what
the failure mechanism(s) and loading conditions are.
Since you--judging from your query--do not have any experience in this, you
should engage a competent commercial lab or consultant to do the FMA for you.
 Werner Engelmaier
Engelmaier Associates, L.C.
Electronic Packaging, Interconnection and Reliability Consulting
7 Jasmine Run
Ormond Beach, FL  32174  USA
Phone: 904-437-8747, Fax: 904-437-8737
E-mail: [log in to unmask], Website: www.engelmaier.com

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