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October 1999

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Subject:
From:
"Stephen R. Gregory" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 11 Oct 1999 18:58:28 EDT
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Hi All!

Remember my little problem with dry-film mask flaking off after multiple
washes in Kyzen? Well, it's not that problem this time.

We went to a different vendor and they used a DuPont dry-film...passed all
the tests I through at it (thermal excursion through reflow, and multiple
cleanings) passed without so much as a scratch.

BUT I discovered another little problem now. We got our first batch of boards
and they matched the drawing which called out SMOBC. We got some boards
delivered a little later that were needed to complete the lot, and I noticed
a lighter color over the traces and vias than the boards we got sent to us
earlier. Me being a little "gun-shy" about masks, I looked at things a little
closer and removed some mask over one of the vias, and discovered that the
whole board had been gold plated. (there's PCI fingers on the board that need
the gold)

The big thing is that they didn't follow the drawing and give us SMOBC like
the drawing states, but is there any real performance problems that I should
be worried about? (Cripes! Can't things run smooth once inna while?)

-Steve Gregory-

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