Calculate trace width for all layers?

swen_s · Sep 22, 2013

I need to route 50 ohm signals on an 8 layer board. To keep the impedance at 50 ohm I need to calculate the trace width on all the layers.

I have found Polar instruments si8000. But is there some free software that I can use?

What program do you use to do this?

sivamani · Sep 23, 2013

search in Google u will get online calculators...
For accurate results u need contact fabricator.

senilicus · Sep 23, 2013

Got to https://saturnpcb.com/pcb_toolkit.htm and download the "Pcb Desing Tool Kit. It can do what you want, and a lot more !!!!!!!!!

sapphire_2010 · Sep 25, 2013

Try Saturn PCB as mentioned above or try this link:
https://www.hughescircuits.com/index.php/en/support/impedance-calculator

To utilize these calculators, you may need to know the Board material, dielectric thickness & copper weight first. If you don't have this info then check with your Fab house for available board material & thickness.

marce · Sep 25, 2013

https://www.technick.net/public/code/cp_dpage.php?aiocp_dp=util_pcb_imp_calculator

**broken link removed**

You don't say whether your trace is going to be:
microstrip, embedded microstrip, or stripline.

dehati · Oct 6, 2013

For Stripline use this calculator

http://referencedesigner.com/tutorials/si/si_07.php

For microstrip use this one

http://referencedesigner.com/tutorials/si/si_06.php

Calculate trace width for all layers?

swen_s

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sivamani

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senilicus

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marce

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dehati

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Calculate trace width for all layers?

swen_s

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marce

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