Hi Kevin,

Maybe it come from the incoming PCB and caused by the poor packing paper.

 
Thanks and best regards,
Justin Wu
Utilux South China Ltd
Phone: +86-755-2850 7521
Fax:    +86-755-2850 0927
E-mail Address: [log in to unmask]

 
-----Original Message-----
From: TGAsia [mailto:[log in to unmask]] On Behalf Of Kevin Chen
Sent: Tuesday, July 26, 2011 10:55 AM
To: [log in to unmask]
Subject: [TGAsia] 锡须

各位专家

  请教一下哪位有关于锡须的经验，想了解一下是锡须是如何产生的，生成条件是什
么，如何验证QFN零件下面有没有锡须，以及如何避免锡须得产生。 

 谢谢！

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__________ Information from ESET NOD32 Antivirus, version of virus signature
database 6324 (20110725) __________

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