[SI-LIST] Re: Capacitance Formula
- From: "Scott McMorrow" <scott@xxxxxxxxxxxxx>
- To: sukhui@xxxxxx
- Date: Mon, 04 Nov 2002 11:05:26 -0800
Suk Hui,
Personally, rather than trust the equations, I would use a commercially
available field solver to solve for the geometry. If you have Hspice,
you can use the built-in field solver to calculate just what you want.
Ultimately, individual values of L and C are fairly meaningless for a
package. What you want to know is the characteristic impedance of the
trace. Some low cost field solvers like Linpar will also give you what
you need.
regards,
scott
--
Scott McMorrow
Teraspeed Consulting Group LLC
2926 SE Yamhill St.
Portland, OR 97214
(503) 239-5536
http://www.teraspeed.com
Suk Hui Teh wrote:
>Hi,
>
>I am currently analysing some package design traces and
>I have come about a couple of microstrip traces where,
>0.1< W/H < 3.0
>
>What are the formulas for calculating capacitance, Zo and inductance
>for these type of traces?
>
>Many thanks,
>Suk Hui
>
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