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October 2006

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Subject:
Re: IPC-610D Question
From:
Susan Mansilla <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Wed, 4 Oct 2006 13:11:14 EDT
Content-Type:
text/plain
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text/plain (21 lines) 
Not a big gun, however, I do have an explanation.

If the solder mask comes off cleanly then the copper is usually solder coated
and you have an intact circuit.

If the solder mask cracks, it can serve as a trap for assembly process
chemicals and moisture and result in shorts between surface features on the board.

Susan Hott
Robisan Lab

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