David,
We presently have a no-clean process, one that was developed and qualified
after many, and I repeat, many hours of engineering tests, documentation,
and presentations. I suppose we could do the same again to qualify a
cleanable product, but I was hoping it wouldn't be necessary. I'd never
heard of anyone who cleaned no-clean assemblies (thus my question to
TechNet) and thought perhaps something might be available that could easily
perform the job.
I'm beginning to think that's not the case...
Leland
-----Original Message-----
From: David Douthit [mailto:[log in to unmask]]
Sent: Wednesday, May 08, 2002 7:58 PM
To: TechNet E-Mail Forum.; Leland Woodall
Subject: Re: [TN] Cleaning of No-clean Assemblies
Leland,
I hate to state the obvious but why are you going to use a "no-clean" flux
if you are going to "clean"
the
PCA.
Removing "no-clean" residues is problematic at best. To repeat the other
posting use a clean able flux!
It's much cheaper!!
David A. Douthit
Manager
LoCan LLC
Leland Woodall wrote:
> Folks,
>
> We've been asked to investigate the pros and cons of performing an aqueous
> wash of our no-clean assemblies prior to them receiving an acrylic
conformal
> coating. Our management team wants the product to be absolutely free from
> any type of contamination.
>
> Has anyone had any experience with this? What are the possible advantages
> and some of the pitfalls we could anticipate?
>
> Are there any knowledge sources that you might be able to recommend?
>
> Any assistance would be sincerely appreciated.
>
> Regards,
>
> Leland Woodall
> Quality Coordinator
> Keihin Carolina System Technology, Inc.
> 4047 McNair Road
> Tarboro, NC 27886
>
> Phone: 252-212-1565, ext. 2865
>
>
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