From: Jeff Seeger (firstname.lastname@example.org)
Date: Fri Nov 05 1999 - 10:30:41 PST
> 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.....
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.
-- Jeff Seeger Applied CAD Knowledge Inc Chief Technical Officer Tyngsboro, MA 01879 jseeger "at" appliedcad "dot" com 978 649 9800
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