The B72207S1390K201 from TDK Corporation is a Varistor with AC Voltage Rating 48 V, DC Voltage Rating 50 to 58 V, Clamping Voltage 135 V, Capacitance 900 pF, Temperature Operating Range -40 to 125 Degree C. Tags: Through Hole. More details for B72207S1390K201 can be seen below.