The B72210S1170K102 from TDK Corporation is a Varistor with AC Voltage Rating 17 V, DC Voltage Rating 20 V, Clamping Voltage 53 V, Capacitance 4400 pF, Temperature Operating Range -40 to 125 Degree C. Tags: Through Hole. More details for B72210S1170K102 can be seen below.