The ZV 40 K 1206 121 HT from Bourns is a Varistor with AC Voltage Rating 40 V, DC Voltage Rating 56 V, Clamping Voltage 110 V, Capacitance 370 pF, Temperature Operating Range -55 to 150 Degree C. Tags: Surface Mount. More details for ZV 40 K 1206 121 HT can be seen below.