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January 1998

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Subject:
From:
Sheila Smith <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 27 Jan 1998 16:01:48 -0500
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Marcelo,  First of all, Why do you want to dip the boards into acetone for
15 minutes?

 If boards are conformal coated with parylene, epoxy or some of the
urethanes, probably not too much will happen.  If they aren't coated &
depending on what they're made of ... you'll probably get lots of absorption
into the laminate ... vacuum baking will probably be required to remove it
... In addition acetone is a good solvent which evaporates quickly so if
you're trying to clean the boards you will just dissolve any acetone-soluble
contaminates and the evaporating solvent will deposit them elsewhere on the
assemblies.



At 03:39 PM 1/27/98 -0500, you wrote:
>What are the drawbacks to using Acetone as a solvent on a fully
>assembled PWB with surface mount components? The idea is to dip the
>entire assembly for about 15 minutes....Would the epoxy molding on
>components absorb the acetone? What about the soldermask?
>
>Marcelo
>
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