Re: [SI-LIST] : PCB Stacking!

jzhao@ee1-gw.ee.binghamton.edu
Wed, 10 Dec 1997 10:51:10 -0500 (EST)

Hi, Everybody,

When I read following message, I just wonder why Hadco requiring an extra
power plane layer for construction? Why the number of layers is an odd
number?

Please help me. Thanks.

Regards,

Jin Zhao

Dept. of Electrical Engineering
State University of New York at Binghamton
Binghamton, NY 13902-6000
Tel: (607) 777-4684
Fax: (607) 777-4464
Email: jzhao@emlab1.ee.binghamton.edu
jzhao@binghamton.edu

On Tue, 2 Dec 1997, Chamseddine, Ahmad wrote:

>
> We currently use FR-4 on one of our boards and the thickness of the
> board is .125" with 17 layers (odd number was due to Hadco requiring an
> extra power plane layer for construction?). Does anyone know by how
> much we can reduce the thickness of the board by using different
> materials (teflon, ceramic, etc..) and what cost impact (percentage
> increase) would that have?.
>
> Any comments would be appreciated.
>
> Sincerely,
>
> Ahmad Chamseddine
>
>
>
>