[SI-LIST] Microstrip Trace under Nickel
- From: "ryansatrom" <ryan.satrom@xxxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Wed, 10 May 2006 14:08:21 -0000
Hello All-
I have been concerned with a microstrip trace traveling under a slab
of nickel. There is only a .020" gap between the trace and the
nickel. I have done simulations in HFSS to confirm that the Nickel
has minimal effect on the impedance.
However, it brought up an interesting discussion point that i don't
really understand:
How does the magnetic properties of a material effect Signal
Integrity?
I understand that some traces are made out of nickel. But they are
typically plated with enough gold that any signal in the MHz and
higher will only travel in the gold due to skin effect.
Nickel has a relative PERMEABILITY of about 600. Does this effect
anything? Thanks for any help on this.
Regards
Ryan Satrom
Everett Charles Technologies
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