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 Square Meters (m²)

Required number input.

Dielectric Meters (m)

Required number input.

Relative Permittivity

Required number input.

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

The resulting capacitance farads returned as a number.

• Capacitance, ESR, leakage, ripple rating, lifetime, and self-resonance vary with frequency, temperature, DC bias, aging, dielectric, package, and mounting. Nominal capacitance alone does not determine in-circuit impedance or reliability.
• 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.

• PCB Plane Capacitance

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

• Thermal Interface Resistance

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

• Touch Capacitance Delta

  Subtract baseline touch-electrode capacitance from measured capacitance; the signed delta distinguishes increases from decreases.