Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

Frequency (Hz)

Required number input.

Inductance (H)

Required number input.

Calculate the negative inductive susceptance of an inductor at a given frequency. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Inductive susceptance (S)

The resulting inductive susceptance returned as a number.

• Compact electronics formulas omit some combination of tolerances, temperature drift, bandwidth, loading, parasitics, noise spectrum, nonlinearity, clipping, calibration, layout, and device-specific limits. Typical datasheet values are not guaranteed limits.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• Capacitive Susceptance

  Calculate the capacitive susceptance of a capacitor at a given frequency.

• Finite-Gain Closed-Loop Error

  Calculate feedback closed-loop gain A/(1+Aβ) and percent error relative to ideal 1/β. Assumes negative feedback with positive real open-loop gain and feedback factor; frequency dependence is excluded.

• EMI Inductor Reactance

  Calculate ideal inductor reactance 2πfL from frequency and inductance, ignoring winding resistance and self-resonance.