Hi!!

I have heard some PCB manufacturerss capable of delivering 100 microns
FR4 in a multilayer substrate but I don`t know their source for the
prepreg.  If you are looking for FR4 without fibre reinforcement,
it would be too brittle (like SR) and may not be useful as a substrate/
board.

regards.

SRINIVASAMURTHY. S

> -----Original Message-----
> From: <Your Full Name> [SMTP:[log in to unmask]]
> Sent: Wednesday, November 01, 2000 1:23 PM
> To:   [log in to unmask]
> Subject:      [TN] Thin FR#4 substrate
>
> Hi:
>      Is there anyone using very thin(thickness) FR#4 substrate instead of
> flex
> cicruit ? It may be kind of FR#4 without fibre glass enforcement. Any
> information are welcome.
>
> regards,
>
> Chan SL
>
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