The B72220U3301K502 from TDK Corporation is a Varistor with AC Voltage Rating 300 V, DC Voltage Rating 385 V, Clamping Voltage 775 V, Capacitance 1050 pF, Temperature Operating Range -40 to 125 Degree C. Tags: Through Hole. More details for B72220U3301K502 can be seen below.