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November 2006

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Subject:
Re: FW: [TN] BGA anomaly
From:
Werner Engelmaier <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Mon, 20 Nov 2006 15:00:19 EST
Content-Type:
text/plain
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text/plain (20 lines) 
Hi Ramon,
Something sure got mixed-up somewhere. You say "BGA ball-solder interface"; 
there is no such thing in a properly soldered SJ, and there certainly are no 
IMCs there.. 
Some people have referred to this 'interface' on solder joints that did not 
get hot enough for the solder volume to join up—and there may be some flux 
remains there, but that is not the root cause.

Werner

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