The MLVS1812P04542 from INPAQ Technology is a Varistor with AC Voltage Rating 4 V, DC Voltage Rating 5.5 V, Clamping Voltage 30 V, Capacitance 5400 pF, Temperature Operating Range -40 to 125 ºC. Tags: Surface Mount. More details for MLVS1812P04542 can be seen below.