[SI-LIST] Embedded uStrip - double check me
- From: "bdempsey85" <bdempsey85@xxxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Wed, 5 Nov 2003 18:40:23 -0600
I would like a double check on my coated uStrip impedance calculations.
I am getting feedback from my PCB fabricator that my numbers are >10%
off.
Here are the parameters:
5 mil wide trace, 0.5 foil with add'l 1oz plating (approx 2.1 mils
thickness)
4 mil trace to plane, Er ~ 4.3
LPI soldermask ~ 0.8 mils thick
I compute 51 ohms...how about you?
Thanks,
Bill
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