The VDRS20M040ByE from Vishay is a Varistor with AC Voltage Rating 40 V, DC Voltage Rating 56 V, Clamping Voltage 135 V, Capacitance 7600 pF, Temperature Operating Range -40 to 85 ºC. Tags: Through Hole. More details for VDRS20M040ByE can be seen below.