[SI-LIST] : Distance between Power and Ground planes

About this list Date view Thread view Subject view Author view

From: david gil donate ([email protected])
Date: Mon Jan 24 2000 - 01:57:49 PST


Hi,
We have some problems with signal impedances between two PCB boards. We want to rebuild the board with different layer heights to fit impedances. I have to preserve the board height. Then when I try to reduce the distance between the sig int 1 and power plane I add distance between ground and power plane. My question is: Can I have some SI or EMI problems if I change the distance between Power and Ground planes to 1.42 mm from 0.2 mm?

                                Current PCB New PCB
sig top ----------------------------- -----------------------
                                0.36 0.2
sig int 1 ----------------------------- -----------------------
                                0.8 0.35
grd ----------------------------- -----------------------
                                0.2 1.42
pwr ----------------------------- -----------------------
                                0.8 0.35
sig int 2 ----------------------------- -----------------------
                                0.36 0.2
sig bottom ---------------------------- ----------------------



**** To unsubscribe from si-list: send e-mail to [email protected]. In the BODY of message put: UNSUBSCRIBE si-list, for more help, put HELP.
si-list archives are accessible at http://www.qsl.net/wb6tpu
****


About this list Date view Thread view Subject view Author view

This archive was generated by hypermail 2b29 : Thu Apr 20 2000 - 11:34:48 PDT