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How impidennce related to trace width /spacing.

Hi, How the impidence & trace width related . Please find sample stack up data , here if I give the trace width 3mil & spacing 3.5mil in SIG1 & SIG4 layer what will be the trace impidence ? how to claculate this Best Regards, Girish Kumar

satya12 over 16 years ago

Impedance relates as below:
1.Inversely proparational to trace width and er.
2.Directly proparational to height from the reference.
Regards,
Satya
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