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November 2003

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Subject:
Re: Dross Contamination Concerns
From:
Brian Ellis <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 26 Nov 2003 09:38:26 +0200
Content-Type:
text/plain
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text/plain (45 lines) 
Yes, I would be very concerned. Anything trapped under conformal coating
negates the use of it, especially as it is visible and totally
uncontrollable.

Brian

Leland Woodall wrote:
> All,
>
> Should I be concerned with conformally coated solderwave dross
> contamination that spans over masked traces?  The normal service
> environment of the product should not cause the material to fall free, and
> none of the contamination is close enough to violate minimum electrical
> clearance from soldered connections.
>
> I have representative photos if you'd like to see one...
>
> Many thanks,
>
> Leland Woodall
> Quality Coordinator
> Keihin Carolina System Technology, Inc.
>
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