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.

Charge Coulombs (C)

Required number input.

Force Newtons (N)

Required number input.

Charge sensitivity of a piezoelectric sensor from generated charge and applied force. 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]

Coulombs Per Newton (C/N)

The resulting coulombs per newton returned as a number.

• Piezoelectric charge, voltage, displacement, sensitivity, and resonance depend on material constants, axis, geometry, preload, boundary conditions, frequency, temperature, dielectric loss, amplifier input, and hysteresis. Static measurements are limited by leakage.
• 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.

• Piezoelectric Charge

  Calculate generated charge Q=dF from an effective piezoelectric charge coefficient and force along a matched axis. Enter d in C/N and force in N; orientation and mechanical boundary conditions must match the coefficient.

• Piezo Sensor Charge Amplifier Voltage

  Calculate ideal inverting charge-amplifier output voltage as −Q/Cfeedback for a piezoelectric sensor; leakage and reset circuitry are excluded.

• Piezoelectric Open-Circuit Voltage

  Estimate open-circuit piezoelectric voltage as generated charge divided by effective capacitance. Loading, leakage, and amplifier input impedance can reduce measured voltage.