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March 2005

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Subject:
Re: Disapearing solder
From:
Werner Engelmaier <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Tue, 1 Mar 2005 09:35:23 EST
Content-Type:
text/plain
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text/plain (27 lines) 
Hi John,
You did not say whether the affected locations are randomly distributed or in 
the same general area.
In the later case, I would look for an area of very high convective flow 
blowing off molten solder, particularly, if more than one SJ is affected in some 
grouping.
Obviously, there has to be an answer—apply Occam's razor.

Regards,
Werner Engelmaier
Engelmaier Associates, L.C.
Electronic Packaging, Interconnection and Reliability Consulting
7 Jasmine Run
Ormond Beach, FL 32174 USA
Phone: 386-437-8747, Fax: 386-437-8737, Cell: 386-316-5904
E-mail: [log in to unmask], Website: www.engelmaier.com

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