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October 2000

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Subject:
From:
James Moffitt <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 3 Oct 2000 19:29:05 EDT
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Hi Carl:
- Scrounging around the harddrive netted a photo of the condition I
discussed.  In the attached photo the dark area just below the meniscus of
the outer heel fillet (J-Lead device) is a group of solder balls that are
entrapped by the partially reflowed solder paste.  Needless to say, this
condition does nothing to enhance the reliability of the solder connections.
Will provide additional photos when I return the office on Friday.  Hope you
don't find something like this in your microsectional analysis.
Regards, Jim Moffitt, Technical Director, Electronics Training Advantage,
Indianapolis, IN

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