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| Date: | Thu, 17 Jun 2010 17:22:52 -0400 |
| Content-Type: | text/plain |
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Hi Al,
Desmear---not likely.
Bubble during electroless flash or catalysation is a possiblility.
Werner
-----Original Message-----
From: Al Onderick <[log in to unmask]>
To: TechNet E-Mail Forum <[log in to unmask]>; Werner Engelmaier <[log in to unmask]>
Sent: Thu, Jun 17, 2010 5:16 pm
Subject: Re: [TN] Thursday Quiz
Hi Werner,
Anychance it has to do with the desmear process or a bubble in electroless?
-Al
From:
Werner Engelmaier <[log in to unmask]>
To:
[log in to unmask]
Date:
06/17/2010 04:14 PM
Subject:
Re: [TN] Thursday Quiz
Sent by:
TechNet <[log in to unmask]>
Hi Al,
This looks like a PTH with some etchant entrapped having eation throughthe copper.
Werner
-----Original Message-----
From: Al Onderick <[log in to unmask]>
To: [log in to unmask]
Sent: Thu, Jun 17, 2010 5:04 pm
Subject: [TN] Thursday Quiz
What causes this ?
http://www.austinwoodsandwaters.com/open-via.jpg
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