The MVR20D680K-S from Meritek Electronics Corporation is a Varistor with AC Voltage Rating 40 V, DC Voltage Rating 56 V, Clamping Voltage 135 V, Capacitance 5800 pF, Temperature Operating Range -40 to 105 Degree C. Tags: Through Hole. More details for MVR20D680K-S can be seen below.