FreeLists / si-list / [SI-LIST] Antw: Embedded uStrip - double check me

["Robert Nowak" <RNowak@xxxxxxxxxxxxx>]

Hello Bill,

I calculate your microstrip line with Hyperlynx 7.0 and get Z0 = 53.6
ohm.

Regards,
Robert


>>> "bdempsey85" <bdempsey85@xxxxxxxxxxx> 11/06 1:40   >>>
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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