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Date: | Wed, 11 Feb 2009 19:41:24 +0000 |
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Hi Lee,
While we haven't seen X-sections, I can speculate that the board could have been bent. I saw a few times cracked ENIG as a result of bad handling.
Regards,
Vladimir
------Original Message------
From: Lee Whiteman
Sender: TechNet
To: [log in to unmask]
ReplyTo: TechNet E-Mail Forum
ReplyTo: [log in to unmask]
Sent: Feb 11, 2009 13:20
Subject: [TN] CRACKED ENIG PADS
I have asked Steve to put up a pair of pictures I received. They are of
cracks within the ENIG finish of a PWB. I know that the board failed,
based on IPC-6011 and IPC-6012.
My question is what would cause the cracking? Evidently, it is in the
Nickel layer and the copper layer was not compromised. There was no
evidence of a lack of bonding between the copper and the ENIG finish.
These boards are fresh from the supplier.
Just curious...
Thanks in advance.
Lee Whiteman, PMP
Senior Member Engineering Staff
L-3 Communications East
Telephone: (856) 338-3508
FAX: (856) 338-2906
E-Mail: [log in to unmask]
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