The MVR40D681K-S from Meritek Electronics Corporation is a Varistor with AC Voltage Rating 420 V, DC Voltage Rating 560 V, Clamping Voltage 1120 V, Capacitance 3500 pF, Temperature Operating Range -40 to 105 Degree C. Tags: Through Hole. More details for MVR40D681K-S can be seen below.