The VDRUS20Z485ByE from Vishay is a Varistor with AC Voltage Rating 485 V, DC Voltage Rating 640 V, Clamping Voltage 1290 V, Capacitance 400 pF, Temperature Operating Range -40 to 125 ºC. Tags: Through Hole. More details for VDRUS20Z485ByE can be seen below.