The B72220S1390K501 from TDK Corporation is a Varistor with AC Voltage Rating 48 V, DC Voltage Rating 50 to 58 V, Clamping Voltage 135 V, Capacitance 6750 pF, Temperature Operating Range -40 to 125 Degree C. Tags: Through Hole. More details for B72220S1390K501 can be seen below.