The MGUG040100L2 from Kyocera AVX is a Varistor with AC Voltage Rating 7.1 V, DC Voltage Rating 10 V, Clamping Voltage 50 V, Capacitance 40 pF, Temperature Operating Range -55 to 125 ºC. Tags: Surface Mount. More details for MGUG040100L2 can be seen below.