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Date: | Fri, 18 Jan 2008 16:18:04 -0500 |
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You also get HOP at BGA ball sites that have balls with a slightly
smaller diameter than the other balls and these can be anywhere in the
BGA array.
Regards,
George
George M. Wenger
CommScope / Andrew Wireless Solutions
Senior Principal FMA / Reliability Engineer
40 Technology Drive, Warren, NJ 07059
(908) 546-4531 [Office] (732) 309-8964 [Cell]
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Werner Engelmaier /*
Sent: Friday, January 18, 2008 4:00 PM
To: [log in to unmask]
Subject: Re: [TN] SV: [TN] SV: [TN] Solderability of Tin-Gold
Intermetallic
Hi Reuven,
When you get HOPs at the BGA corners, warpage is a good guess at the
root
cause, if they are in the center than infifficient peak reflow
temperature.
Werner
**************
Start the year off right. Easy ways to stay in shape.
http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489
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