The VDRUS20Z680ByE from Vishay is a Varistor with AC Voltage Rating 680 V, DC Voltage Rating 895 V, Clamping Voltage 1815 V, Capacitance 250 pF, Temperature Operating Range -40 to 125 ºC. Tags: Through Hole. More details for VDRUS20Z680ByE can be seen below.