Call me and we can discuss off-line
I don't want to sound like an advertisement
Yes UL approval is available
Hope I can help
FNK

Frank N Kimmey
EM Designer
C&K Systems, Inc
(916) 353-5366
[log in to unmask]

> ----------
> From:         Gerald G. Gagnon[SMTP:[log in to unmask]]
> Reply To:     TechNet E-Mail Forum.;Gerald G. Gagnon
> Sent:         Friday, May 01, 1998 5:17 AM
> To:   [log in to unmask]
> Subject:      Re: [TN] FR4 material/Rogers material compatibility?
>
> Hi Jeff
>
> OK. I'll bite. Who makes such circuits? Are they UL approved?
>
> Thanks for anything provided.
>
> Gerry
>
> -----Original Message-----
> From:   McGlaughlin, Jeffrey A [SMTP:[log in to unmask]]
> Sent:   Friday, May 01, 1998 7:26 AM
> To:     [log in to unmask]
> Subject:        Re: [TN] FR4 material/Rogers material compatibility?
>
> Mitch -
>
> I personally worked on one 4 layer design for an RF Transmitter that
> used a
> sandwich of 2 RO4003 cores an a center layer of FR-4 prepreg. This
> design
> preformed extremely well and was simple to tune.  I have also bonded
> RO4350
> with G-tek prepreg  which formed a very rigid  and thermal stable PWB.
> Contact me off-line and I can recommend a fabricator for these types
> of
> PWB's.
>
> Jeffrey A. McGlaughlin
> [log in to unmask]
> Printed Circuit Board Designer
> Battelle Memorial Institute
> Columbus Ohio
>
>
>         -----Original Message-----
>         From:   Mitch Morey [SMTP:[log in to unmask]]
>
>         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
>
>
>
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