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October 2001

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From:
"d. terstegge" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 4 Oct 2001 10:12:33 +0100
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Hi Michael,

In my experience it is not needed to re-bake PCB's after cleaning.
Even when you soak a PCB in a bucket filled with water, it takes hours until the board has absorbed enough moisture to result in delamination-problems. 
This may not be true for polyimide or other sensitive materials, but for standard FR4 I wouldn't worry.  

Kind regards,

Daan Terstegge
SMT Centre
Thales Communications
Unclassified mail
Personal Website: http://www.smtinfo.net


>>> Michael Bell <[log in to unmask]> 10/03 9:49 pm >>>
What is the impact on a PCB if an operator has ultrasonically clean a PCB in
IPA.  The PCB was cleaned for about 5minutes after the paste had been
scrapped off.  Would the PCB absorb the IPA and in-turn lead to delamination
or have any other degrading effect?

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