The B72225S4251K101 from TDK Corporation is a Varistor with AC Voltage Rating 250 V, DC Voltage Rating 320 V, Clamping Voltage 650 V, Capacitance 2100 pF, Temperature Operating Range -40 to 105 Degree C. Tags: Through Hole. More details for B72225S4251K101 can be seen below.