Have a search for FR3. This was commonly used for such apps in the past
(don't know about now) and was tan in colour. Its logos should be red if
flame retardant (hence FR). Not as good electrically as FR4, but not
bad, either. Much better than XXXPC, which is a phenolic. Advantages:
cheaper and more easily drilled and, above all, stamped.

Brian

Carl VanWormer wrote:
> I have searched (unsuccessfully) for tutorials or charts on PCB material
> comparisons.  Is there a good (free?) reference available explaining the
> characteristics of the various PCB materials in current use?  I'm used to
> FR4, and I'm aware of the exotic stuff, but I see stuff that looks like the
> old phenolic is some things that I open up.  I've noticed common usage of a
> tan material in most PC power supplies.  I'm hoping to find a physical
> characteristics (Dielectric strength, fire safety, etc) comparison chart
> somewhere . . .
>
>
> Carl Van Wormer
> Cipher Systems
> 1815 NW 169th Place, Suite 5010
> Beaverton, OR  97006
> Phone (503)-617-7447    Fax (503)-617-6550
>
> ---------------------------------------------------
> Technet Mail List provided as a free service by IPC using LISTSERV 1.8e
> To unsubscribe, send a message to [log in to unmask] with following text in
> the BODY (NOT the subject field): SIGNOFF Technet
> To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
> To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
> Search the archives of previous posts at: http://listserv.ipc.org/archives
> Please visit IPC web site http://www.ipc.org/html/forum.htm for additional
> information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
> -----------------------------------------------------
>
>
>
>

---------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/html/forum.htm for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------