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July 2014

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Subject:
Soldermask Imperfection
From:
"Upton, Shawn" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Upton, Shawn
Date:
Wed, 9 Jul 2014 14:19:28 +0000
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Where do I look for documentation on soldermask?  I received a board where the soldermask coverage was good, but it looked "crazed" and I am wondering how to spec that out on fab notes.  I'm looking at IPC-2221A, 4.5.1, at the end it briefly mentions matte and glossy finishes; would I just specify gloss soldermask in my soldermask FAB note section where I want it to be glossy and of high visual quality?

Shawn Upton, KB1CKT
Test Engineer
Allegro MicroSystems, LLC
[log in to unmask]
603.626.2429/fax: 603.641.5336


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