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Impedance Control Calculator

PCB Impedance Calculator

An Impedance Control Calculator helps PCB designers calculate the trace width and spacing needed to achieve a target impedance (e.g., 50Ω) for different PCB stack-ups.

✅ Key Inputs

Your calculator should let the user input:

  • Target Impedance (Ω) — e.g., 50Ω
  • Dielectric constant (Dk) — e.g., 4.2
  • Dielectric height (H) — distance from trace to reference plane (mil/mm)
  • Trace thickness (T) — copper thickness (mil/mm)
  • Trace configuration — microstrip or stripline
  • Optional: Desired trace width (to check the actual impedance)

✅ Key Outputs

It should output:

  • Calculated Trace Width (W) — for the given stackup and target impedance.
  • Calculated Impedance (Zo) — if the user inputs a trace width instead.
Impedance Control Calculator | Precision PCB

Impedance Control Calculator

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