The VDRS20W300ByE from Vishay is a Varistor with AC Voltage Rating 300 V, DC Voltage Rating 385 V, Clamping Voltage 775 V, Capacitance 810 pF, Temperature Operating Range -40 to 85 ºC. Tags: Through Hole. More details for VDRS20W300ByE can be seen below.