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June 2000

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Subject:
Re: Loaded board rework
From:
"Howieson, Rick" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 7 Jun 2000 19:29:33 -0600
Content-Type:
text/plain
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text/plain (57 lines) 
Ralph,
Ain't gonna happen and why would they want this?
Rick
GTC

>-----Original Message-----
>From:  Ralph Richart [SMTP:[log in to unmask]]
>Sent:  Wednesday, June 07, 2000 5:29 PM
>To:    [log in to unmask]
>Subject:       [TN] Loaded board rework
>
>Hello:
>
>Our customer made a mistake on their print.  Instead of specifying
>immersion gold, they specified Hot Air Solder Levelled.  Now they have
>LOADED boards that they want to get immersion gold on.
>
>Has anyone done this?  The questions I have off the top of my head are:
>1. How do you protect the components from the immersion gold?  Would
>conformal coat work?
>2. Do you have to strip the solder first, or can you go gold over
>solder?
>3. What, if anything, would all this do to reliability?
>
>Thanks for your help....
>
>ralph richart
>
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