The RV221K20_-HE from Stackpole Electronics is a Varistor with AC Voltage Rating 140 V, DC Voltage Rating 180 V, Clamping Voltage 360 V, Capacitance 1700 pF, Temperature Operating Range -40 to 85 Degree C. Tags: Through Hole. More details for RV221K20_-HE can be seen below.