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April 2003

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Subject:
From:
"Macko, Joe @ IEC" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Sat, 26 Apr 2003 10:57:27 -0700
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Fellow Technets,

Periodically, BGAs are reflowed using our AIR-VAC hot air rework station.
RMA liquid flux is 1st flowed under the BGA prior to reflow and then clean
afterwards starting with IPA spray followed by an in-line cleaner wash.
Occasionally, flux residue remains which requires additional cleaning.

I am in need of a creative and operator safe way to either spray/flow warm
IPA or a mixture of hot saponifier/DI water (from our in-line cleaner) under
BGAs to expedite cleaning.  I do not know of any equipment on the market
that can be used for this application.

Welcome ALL suggestions and proven methods.  thanks

joe

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