The MVR20D122K-S from Meritek Electronics Corporation is a Varistor with AC Voltage Rating 750 V, DC Voltage Rating 990 V, Clamping Voltage 1980 V, Capacitance 350 pF, Temperature Operating Range -40 to 105 Degree C. Tags: Through Hole. More details for MVR20D122K-S can be seen below.