| Select the box with the geometry that you would like to calculate. | ||||
|---|---|---|---|---|
Microstrip | Embedded Microstrip | Stripline | Dual Stripline | |
Asymmetric Stripline | Differential Impedance of Microstrip | Differential Impedance of Stripline | ||
THESE FORMULAS ARE APPROXIMATIONS!
They should not be used when a high degree of accuracy is required.
The approximate formulas are provided along with restrictions on the relative size of the various parameters.
All the units are in SI (Iternational System):
- [m] = meter
- [s] = second
- [H] = Henry
- [F] = Farad
Reference and sources:
- - UltraCAD Design, Inc.
- Zed Z. Chang
- PCB Trace Impedance Calculator