IPC-600-6012 Archives

August 2010

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Subject:
Re: opinion poll
From:
[log in to unmask]
Reply To:
(Combined Forum of D-33a and 7-31a Subcommittees)
Date:
Mon, 16 Aug 2010 17:25:35 -0400
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Looks like a burn to me.
 
Tom
 
 
In a message dated 8/16/2010 10:20:36 A.M. US Mountain Standard Time,  
[log in to unmask] writes:

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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