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PCB Impedance Calculator
Calculate characteristic impedance of PCB transmission lines
About PCB Impedance
Characteristic impedance is crucial for high-speed PCB design to ensure proper signal integrity and minimize reflections. This calculator helps determine the impedance of microstrip and stripline transmission lines based on their physical dimensions and substrate properties.
PCB Impedance Design Tips
- Target Impedance: 50Ω for single-ended, 100Ω for differential pairs
- Trace Width: Wider traces = lower impedance, narrower = higher impedance
- Substrate Height: Thicker substrates = higher impedance
- Dielectric Constant: Lower εr = higher impedance
- Manufacturing: Consider manufacturing tolerances (±10% typical)
- Frequency Effects: Impedance varies with frequency due to skin effect