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| Date: | Sun, 8 Jan 2012 16:17:19 -0800 |
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-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Terry Munson
Sent: Saturday, January 07, 2012 4:44 PM
To: [log in to unmask]
Subject: Re: [TN] Cleaning water soluble fluxþ
They should look at DI water steam to clean and rinse. We have effectively
cleaned 2331-ZX flux. With stop steam cleaning. Call me at 765-457-8095.
Terry Munson
Foresite
765-457-8095
On Jan 7, 2012, at 6:36 PM, Gary Bremer <[log in to unmask]> wrote:
> I am presently working as an contractor for the next few months then back
to unemployment, last place I worked was Jet Propulsion Laboratory on the
Mars Science Laboratory. These are lighted panels for various aircraft and
the company policy is for J-STD-001/IPC-A-610 Class 3 The failure is with
miniature T-1 lamps that stop working after going through an baking process.
Other boards that use these lamps but use RMA flux do not have this problem,
I suspect the cleaning process and the flux. They do not check ionic
contamination and handle the boards with bare hands and the operators even
know when components are ESD sensitive or not. I have recommended they
change the cleaning process to an Aqueous type batch cleaner but this cost
money which they do not wish to spend. Their process person believes that
their process is fine and something else is causing the problem (bad lamps,
forming lamp leads, etc.). This goes against all my knowledge and training.
>
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