From: Jeff Seeger ([email protected])
Date: Fri Nov 05 1999 - 10:30:41 PST
[email protected] wrote:
>
> snip <
>
> So, what if I do this?:
>
> Layer 1 Component, Pads, some routing.
> Layer 2 Routing
> Layer 3 Ground
> Layer 4 Power
>
> snip <
>
> I've not seen this lay-up suggested much, but it looks like it could work. So
> before I go ahead and try it I thought I'd bounce the idea.....
>
> Opinions?
>
This presents a manufacturing problem; it is likely to
warp. In order to avoid that circumstance, you should
arrange your layers with similar copper images (positive
versus negative) and dielectric thicknesses in symmetry
through the Z-axis.
Not sure how to help you with your 4kV noise without the
addition of a shield of some sort.
Regards,
-- Jeff Seeger Applied CAD Knowledge Inc Chief Technical Officer Tyngsboro, MA 01879 jseeger "at" appliedcad "dot" com 978 649 9800**** 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/si-list ****
This archive was generated by hypermail 2b29 : Tue Feb 29 2000 - 11:39:38 PST