The DV 40 K 4032 from Bourns is a Varistor with AC Voltage Rating 40 V, DC Voltage Rating 56 V, Clamping Voltage 135 V, Capacitance 1200 pF, Temperature Operating Range -40 to 125 Degree C. Tags: Surface Mount. More details for DV 40 K 4032 can be seen below.