The B72225S4581K101 from TDK Corporation is a Varistor with AC Voltage Rating 580 V, DC Voltage Rating 780 V, Clamping Voltage 1580 V, Capacitance 830 pF, Temperature Operating Range -40 to 105 Degree C. Tags: Through Hole. More details for B72225S4581K101 can be seen below.