Is the surface finish ENIG? If so check to see if the silkscreen was applied
before the ENIG process.
I've seen this before but it was violet and /or pink.

Cheers,

David Hoover
Dir Eng and Quality
Gold Circuit Electronics GSS
San Jose, CA 95126
[log in to unmask]
www.gce.com.tw
----- Original Message -----
From: "Franklin Asbell" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, September 08, 2005 9:38 AM
Subject: [TN] Pink symbol ink...


> We got a call from a customer expressing an interesting issue.
>
>
>
> They ran product through their wave solder and the symbolization went from
> white to pink.
>
>
>
> I've never heard of this color change appearing, anyone out there have an
> idea?
>
>
>
> The symbol is Enthone 50-100R - white, the wave solder info I have is Type
> R
> flux with a peak temperature of 215 C.
>
>
>
> Appreciate any input, thanks.
>
>
>
> Franklin
>
> pI
>
>
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