Hi,
When I extracted a trace into Signal explorer the result was slightly different from what was calculated.
SigXplorer gave a microstrip with Zo = 174.48 whilst calculation using IPC2141A resulted in Zo = 132 ohms
w = 10mil, t = 35um, h = 1.6 mm, dielectric constant 4.5
Which one is the correct?
thanks
ltoth