Jack,

I read the other replies.  I think you are okay with this and my opinion 
is that the platers got carried away with the glass etch.  It is easy to 
do, the high concentrate sulfuric has to be replenished often because it 
pulls water from the atmosphere and won't work.  Your board was probably 
after an add.

I have see this look like pink rings round all holes.  Yours is not that 
bad.

Chuck Brummer
3M Manufacturing Engineer
8357 Canoga Ave.
Canoga Park, CA 91304-2605
(818) 734-4930




Jack Olson <[log in to unmask]> 
Sent by: TechNet <[log in to unmask]>
10/01/2007 09:55 AM
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Subject
[TN] Is This a BAD Thing?






I'm not accustomed to looking at reliability issues,
(my designs are usually so perfect... (grin))
so every time I see an X-Ray or a cross-section
I get nervous wondering what I'm actually seeing.

Can anyone explain what the following picture means?

http://www.frontdoor.biz/PCBportal/208what.jpg

onward thru the fog,
Jack

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