Sunstone Printed Circuit Board Forum

I'm using the following calculator to compute the characteristic impedance of a trace:

https://chemandy.com/calculators/coplan ... ulator.htm

The question I have is what is the dielectric thickness on a four layer board if the total thickness of the board is 0.062"? If the trace is on the top or bottom layer, would it be the 0.0141" shown in Sunstone's layer stackup section? It seams like every example I find utilizes a two layer board with a thickness of ~0.062".

Thanks in advance.

Hey Mike,
Did you ever get this resolved? The notification for your request did not come through. Let me know and I can troubleshoot for you.
Kelly