The MVS1812B240K-S from Meritek Electronics Corporation is a Varistor with AC Voltage Rating 14 V, DC Voltage Rating 18 V, Clamping Voltage 38 V, Capacitance 4650 pF, Temperature Operating Range -50 to 85 Degree C. Tags: Surface Mount. More details for MVS1812B240K-S can be seen below.