The ZVX 20 S 1206 400 from Bourns is a Varistor with AC Voltage Rating 20 V, DC Voltage Rating 26 V, Clamping Voltage 58 V, Capacitance 200 pF, Temperature Operating Range -55 to 125 Degree C. Tags: Surface Mount. More details for ZVX 20 S 1206 400 can be seen below.