The VDRS20W250ByE from Vishay is a Varistor with AC Voltage Rating 250 V, DC Voltage Rating 320 V, Clamping Voltage 650 V, Capacitance 960 pF, Temperature Operating Range -40 to 85 ºC. Tags: Through Hole. More details for VDRS20W250ByE can be seen below.