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March 1997

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Subject:
Gen- Cu protective coating
From:
[log in to unmask] (Maurice Dore)
Date:
Mon, 10 Mar 1997 13:19:44 GMT
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Date	10/3/97
Subject	Gen- Cu protective coating 
From	Maurice Dore
To	technet  

                                           Gen: Cu protective coating
quality
                                           11:45               10/3/97
hi all
I have used a test to determine the imidazole based protective coating on Cu
by applying ferric chloride to the Cu (Ref: IPC-TM-650 2.3.22)
The result has shown a tarnish in different areas of the pads.
Does anyone out there use this test to check the coating on the Cu?

THANKS

MOSS


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