🔌 Technik & Elektronik

Kabel-Impedanz-Rechner

Enter the conductor diameters and dielectric constant for coax impedance.

Inner diameter of shield (mm)

Outer diameter of center conductor (mm)

Dielectric constant (Er)

Result will appear here

Formel

Z = (138 ÷ √Er) · log₁₀(D ÷ d)