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.

Temperature (K)

Required number input.

Calculate semiconductor thermal voltage, about 25.85 mV at 300 K. 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]

Thermal voltage (V)

The resulting thermal voltage 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.

• Temperature Sensor LM35 Voltage

  Calculate nominal LM35 temperature-sensor voltage from Celsius temperature using the device's 10 mV/°C transfer factor; accuracy and supply constraints are separate.

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  Calculate positive reactive-power magnitude for a balanced three-phase motor from line voltage, line current, and power factor.

• Accelerometer Voltage Output

  Calculate linear analog accelerometer voltage from zero-g voltage, sensitivity in volts per g, and signed acceleration in g.