The B72220U2511K501 from TDK Corporation is a Varistor with AC Voltage Rating 510 V, DC Voltage Rating 670 V, Clamping Voltage 1355 V, Capacitance 460 pF, Temperature Operating Range -40 to 125 Degree C. Tags: Through Hole. More details for B72220U2511K501 can be seen below.