Kaye,

Don't have the chart but you can use the following formula;

R=p(l/s)

l= Length of conductor in cm
R= Resistance in Ohms
p= Specific Resistivity of Cu (1.7241-6)
s= Cross sectional area (cm^2)

Regards
John Parsons
Circuit Graphics Ltd.

> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Kaye Knotts
> Sent: Tuesday, April 10, 2001 6:59 AM
> To: [log in to unmask]
> Subject: [TN] PCB Trace Resistance Chart
>
>
> A few years ago I used a chart that
> showed the resistance of a pcb trace
> of a specific length and cross-sectional area.
> Now I cannot find this chart.
> Does anybody know where I can find this
> chart again or know of a way I can calculate
> the resistance of a particular trace on a board?
> Thanks,
> Kaye

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