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January 2003

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TechNet <[log in to unmask]>
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Date:
Mon, 20 Jan 2003 15:28:20 -0500
Reply-To:
"TechNet E-Mail Forum." <[log in to unmask]>, Josee Wolfe <[log in to unmask]>
Subject:
Etchant Question
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From:
Josee Wolfe <[log in to unmask]>
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Hi,

We are introducing a new process and we want to know the effect this has
on the intermetallics formed in the solder joint. In order to compare
the intermetallics formed during the surface mount process to those
formed in the new process, we want to cross-section a joint and then
etch the cross-section so that we can differentiate the intermetallic
layer from process a to process b. My question is this, what etchant
would produce this effect?

Thanks,

Josee

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