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March 1997

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Tue, 25 Mar 1997 17:46:00 -0500 (EST)
From [log in to unmask] Tue Mar 25 17:
04:13 1997
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Assy: green stuff
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Hello,

At the burn in operation, we sometimes find a green stuff as well as black 
stuff that look like corrosion and they're located under the conformal 
coating. When analysing the stuff, it came out as copper chloride for the 
green spots and copper sulfide for the black spots.  Any idea as to where 
they could originate from ?

Thank you.

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