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March 2001

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Subject:
Quality of Etching
From:
Emily Tse <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 5 Mar 2001 08:39:14 -0500
Content-Type:
text/plain
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text/plain (27 lines) 
Hi there,

I wonder if there's any test out there to test the quality of etching away
the Copper coating on circuit board - I read from the IPC there's a standard
test for testing Gold Porosity (IPC-TM650)  I wonder if there's a minimum
thickness of the testing sample?!  Also, does anyone if there's any "ready
to use" package for this test?!  Your help is highly appreciated!

Regards,

Emily Tse


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