I have a "similar" question which hopefully someone can answer. I've
been asked by our engineering group if FR4 material, is compatible with
the Rogers 3000 and 4000 materials? We'd like to make a board using the
Rogers material for some circuitry and FR4 material with the other
circuitry.

Any luck?

Mitch Morey
Sr PCB Designer
NSI Communications (was ComStream Corp)
San Diego CA

>>> FRANCEYJ <[log in to unmask]> 04/30/98 10:14am >>>
Ed

Your customer is probably asking for "tetrafunctional" epoxy (FR4)
which has
comparatively higher Tg and chemical resistance (to "difunctional
epoxy").
Your laminate or board supplier will advise.

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