Inductor Temperature-Coefficient Drift

Estimate inductance drift with a linear ppm/°C coefficient. Core permeability and DC-bias effects can be nonlinear; use a datasheet coefficient applicable to the temperature range.

Description

Estimate inductance drift with a linear ppm/°C coefficient. Core permeability and DC-bias effects can be nonlinear; use a datasheet coefficient applicable to the temperature range.

Inductor Temperature-Coefficient Drift: Estimate inductance drift with a linear ppm/°C coefficient. Core permeability and DC-bias effects can be nonlinear; use a datasheet coefficient applicable to the temperature range.

When to use Inductor Temperature-Coefficient Drift

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.

Reference inductance (H): Required number input.
Temperature coefficient (ppm/°C): Required number input.
Temperature change (°C): Required number input.

How Inductor Temperature-Coefficient Drift works

Estimate inductance drift with a linear ppm/°C coefficient. Core permeability and DC-bias effects can be nonlinear; use a datasheet coefficient applicable to the temperature range. 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]

Change (H): The resulting change (h) returned as a number.
New inductance (H): The resulting new inductance (h) returned as a number.

Limitations and assumptions

Inductor calculations depend on core material, air gap, turns, frequency, waveform, temperature, DC bias, copper resistance, skin and proximity effects, fringing, and saturation definition. Small-signal inductance and nominal current rating may not describe switching operation.
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.

Alternative or Complementary approaches

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.

References

Inductor — Wikipedia contributors

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