The ZV 50 K 1206 121 HT from Bourns is a Varistor with AC Voltage Rating 50 V, DC Voltage Rating 65 V, Clamping Voltage 135 V, Capacitance 340 pF, Temperature Operating Range -55 to 150 Degree C. Tags: Surface Mount. More details for ZV 50 K 1206 121 HT can be seen below.