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April 2003

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Subject:
From:
Bill Decray <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 18 Apr 2003 14:56:08 -0400
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text/plain (53 lines)
Hi Keith,
Can you post the link to his site. I would like to look at the pics for
review. Crack vias will come from the copper plating baths.


Highest Regards,

William W. DeCray III


-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Keith Calhoun
Sent: Friday, April 18, 2003 2:25 PM
To: [log in to unmask]
Subject: [TN] Cracking in vias


We have recently found a problem in several assembled boards which failed
ICT.  We found several vias which had become opens after
assembly.  We had the open vias sectioned, I sent Steve Z. some pictures to
post on his site.  I would like to have your opinions on what may
have been the cause for this failure.  So far it seems to have occured only
on boards having two date codes from our board vendor.

Thanks for the support.

Keith Calhoun

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