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.

Overlap Area (m²) (m²)

Required number input.

Dielectric Thickness (m) (m)

Required number input.

Relative Permittivity

Required number input.

Calculate ideal parallel-plane PCB capacitance as ε0 εr A/d from overlapping copper area, dielectric thickness, and relative permittivity; fringe fields are excluded. 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]

Capacitance (F) (F)

The resulting capacitance (f) returned as a number.

• PCB trace calculations depend on finished copper thickness, geometry, dielectric stack-up, temperature rise criterion, ambient, neighboring conductors, return path, frequency, surface finish, and fabrication tolerance. IPC equations are approximations, not a substitute for the board fabricator's stack-up or field solving.
• 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.

• Touch Panel Capacitance

  Ideal parallel-plate touch electrode capacitance from overlap area, dielectric thickness and relative permittivity.

• Thermal Interface Resistance

  Calculate ideal thermal interface resistance t/(kA) from uniform pad thickness, thermal conductivity, and contact area; contact imperfections are excluded.

• ADC Quantization Error Bound

  Calculate the ideal rounding quantizer's maximum absolute error as half an ADC LSB. Assumes a uniform quantizer and input within the conversion range; offset, gain, and noise errors are excluded.