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Date: | Sun, 7 Feb 2010 15:18:30 -0800 |
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Elaine,
would do nothing before I knew what's under the surface. ENIG boards vary by
quality. you need touch up, which tells me there is a problem with the
finish. If you speak about very extensive batches, I would start with a
analysis of the kind that gives a view of the in-depth status, e.g. the P
%age, finish thickness,, contaminations, micro hardness etc. From that, you
can work safer. If it's only about a single or few boards, you may just go
on with stronger flux, increased dwell time and a nmber of other well
known actions. you wsill get lots of proposals.
Inge
----- Original Message -----
From: "Brown, Elaine" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, February 24, 2010 1:19 PM
Subject: [TN] Touch up on ENIG
> What do folks do to rework exposed nickel on ENIG unpopulated boards?
>
> I find brush plating for tab plating but nothing for ENIG.
>
> Thanks in advance
>
> Elaine
>
>
> Elaine Brown
> PWB Quality Engineering
> Lockheed Martin Systems Integration - Owego
> 1801 State Route 17C MD0409
> Owego, NY 13827
> Phone: 607-751-2015 FAX: 607-751-7796
> e-mail: [log in to unmask]
>
>
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