[SI-LIST] Re: Formula for trace resistance not impedence
- From: steve weir <weirsp@xxxxxxxxxx>
- To: chris.robertson@xxxxxxxxxxxxx, <si-list@xxxxxxxxxxxxx>
- Date: Thu, 19 Dec 2002 08:18:04 -0800
Chris, it is pretty close to 1milliohm length / width at 0.5 oz
plating. Lake grade Cu has a resistivity of 683E-9 ohms square, and 0.5 oz
plating is very close to 0.7mils thick.
Regards,
Steve.
At 09:57 AM 12/19/2002 -0600, you wrote:
>Hello all,
>I'm building another calculator (I have a bundle) that just calculates the
>trace resistance.
>Does anyone have a/the formula? I'm just looking for a basic "rule of
>thumb" type formula.
>some I have seen add several different values, but I need to simply
>calculate from Trace width & thickness.
>
>
>CR
>
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