steve,
are you doing any gold finger adhesion test? I know many of vendor do not
like the test and consider it is not accurate. But it helps a lot when you
check for consistancy.
http://www.intertronics.co.uk/products/cint871.htm
my 1.7 cents...
jk
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of R Sedlak
Sent: Friday, October 28, 2005 3:56 PM
To: [log in to unmask]
Subject: Re: [TN] Gold Plating Peeling...
Steve: The usual cause of peeling plating is plating on to a dirty/oxized
surface.
Can it be reworked.... possibly, making sure that you get rid of the
original problem which caused the problem initially.
Can it be reworked in a way which is essentially guaranteed to work 99+% of
the cases? Probably not.
Perhaps some sort of incoming inspection/test might be worth considering?
Rudy Sedlak
RD Chemical Company
Steve Gregory <[log in to unmask]> wrote:
Well, I just got back from "Sin City", and as they say; "no rest for the
wicked".
I really wasn't that wicked, but I was confronted with a new problem this
morning.
We just built some assemblies and conformal coated them, but when they were
being
de-masked, the gold plating on the fingers started peeling up! Check out:
http://www.stevezeva.homestead.com/files/Peeling_Plating.jpg
http://www.stevezeva.homestead.com/files/Peeling_Plating_2.jpg
I have a couple of questions:
Can I repair this?
If I repair this, should all fingers be stripped and repaired?
Kind regards,
-Steve Gregory-
Senior Process Engineer
LaBarge Incorporated
Tulsa, Oklahoma
(918) 459-2285
(918) 459-2350 FAX
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