The VR20AS18J390 from Kyocera AVX is a Varistor with AC Voltage Rating 13 V, DC Voltage Rating 18 V, Clamping Voltage 42 V, Capacitance 3100 pF, Temperature Operating Range -55 to 125 ºC. Tags: Through Hole. More details for VR20AS18J390 can be seen below.