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March 2000

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TechNet <[log in to unmask]>
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[log in to unmask]
Date:
Wed, 1 Mar 2000 12:08:45 EST
Reply-To:
"TechNet E-Mail Forum." <[log in to unmask]>, [log in to unmask]
Subject:
Re: Solvent Cleaning
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From:
Douglas Pauls <[log in to unmask]>
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In a message dated 03/01/2000 11:31:50 AM US Eastern Standard Time,
[log in to unmask] writes:

>
>  Could anyone tell me the most effective way of cleaning RMA-flux on FR4-
> boards as well as ceramic substrates. Both inline and batch cleaning is of
> interest.
>  Component stand-off is 0.04mm in some cases and micro-BGA:s are soon in
the
> production line.

The most effective cleaning of high solids RMAs has been with a good
saponifier (5-7%) in deionized water, 150F, with 2-3 DI water rinses.

Doug Pauls
CSL

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