The ZV 20 K 0805 121 from Bourns is a Varistor with AC Voltage Rating 20 V, DC Voltage Rating 26 V, Clamping Voltage 54 V, Capacitance 290 pF, Temperature Operating Range -55 to 125 Degree C. Tags: Surface Mount. More details for ZV 20 K 0805 121 can be seen below.