The snubber circuit is used in thyristor circuits to dampen the ringing when turning off SCR. An RC snubber protects an SCR against false switching-ON due to high break-over voltage induced by L* di/dt. Thyristor snubber circuit exampled with a reverse polarized Diode “D” and a discharge resistor “R_D”. Here R and C are snubber resistor and capacitor respectively. Values of Snubber Resistor and Capacitor can be determined by reading the snubber circuit design page.