The VCUG120030H1 from Kyocera AVX is a Varistor with AC Voltage Rating 2.3 V, DC Voltage Rating 3 V, Clamping Voltage 18 V, Capacitance 3000 pF, Temperature Operating Range -55 to 125 ºC. Tags: Surface Mount. More details for VCUG120030H1 can be seen below.