IPC-600-6012 Archives

August 2010

IPC-600-6012@IPC.ORG
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Subject:
opinion poll
From:
Chris Mahanna <[log in to unmask]>
Reply To:
(Combined Forum of D-33a and 7-31a Subcommittees)
Date:
Mon, 16 Aug 2010 13:18:59 -0400
Content-Type:
multipart/mixed
Parts/Attachments:
text/plain (622 bytes) , corner.jpg (1 MB) 
Hi Everyone,

Attached is a picture of a thru-hole corner after thermal stress.  The plating is pulse.  I believe the corner was 'burnt' because of the geometry of the (conformant) negative etchback.  All the corners show burn; some show blisters; only this one cracked.

In your opinion, what are the non-conformance(s) if any?


Thanks

Chris

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