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May 2000

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Subject:
From:
"Tempea, Ioan" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 11 May 2000 08:19:12 -0400
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Thanks for the feedback.

Guess what: yesterday I checked Circuits Assembly and there it was, an
article on OSPs by a guy called Michael Carano (any relationship with my
contributor?). OK, it covers mostly the PCB fab part, but it gave me an idea
of what this is and that, once again Technet proves to be an impressive
resource of knowledge.

Now, since I have more questions, back to business:
- are OSP sensitive to hand touch? Will the skin oils degrade the coating,
or the boards can be handled like HASL ones?
- as some qualified oppinion reached me, misprinting is bad. If it happens,
what to use for paste removal and how to do it? Looks like the IPA will
damage the OSP and IPA is what we are currently using.
- what coating thickness should I specify to make sure the board will easily
take 2 reflows plus 2 selective soldering cycles?
- where could I find in depth resources on OSP?

Best to all,
Ioan

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