The B72220S0500K101 from TDK Corporation is a Varistor with AC Voltage Rating 50 V, DC Voltage Rating 65 V, Clamping Voltage 135 V, Capacitance 3800 pF, Temperature Operating Range -40 to 105 ºC. Tags: Through Hole. More details for B72220S0500K101 can be seen below.