RC snubber capacitance, resistance, and loss

Calculate capacitance from energy or enter it. Changing the µH, nF, or kHz unit converts the number so the same physical value is kept.

Rechenbeispiel

Energy capacitance 40 nF

C_energy = (L_H * I^2) / Delta_V^2. The inductance unit is converted to henry before this equation.

Capacitance used 40 nF

Energy mode uses C = (L * I^2) / Delta_V^2. Entered mode uses the capacitance and unit you selected.

Damping resistance 10 ohm

R = 2 * zeta * sqrt(L / C)

Resistor loss 8 W

P = C * V_peak^2 * f_Hz. Hz, kHz, and MHz are converted to hertz first.

Capacitor voltage rating and resistor power rating need measurement on the real circuit. No switch part number is stored here.

dv/dt 250 V/µs

dv/dt = V_peak / (R * C) in V/s, shown as V/µs (volts per microsecond).

Minimum on time 1.2 µs

t_on = 3 * R * C, shown in µs (microseconds).

Zeta from 0.7 to 1.0 is a usual damping note, not a clamp. The AC power equation is not used because X_c is not defined.