The MVR20D621K-S from Meritek Electronics Corporation is a Varistor with AC Voltage Rating 385 V, DC Voltage Rating 505 V, Clamping Voltage 1025 V, Capacitance 650 pF, Temperature Operating Range -40 to 105 Degree C. Tags: Through Hole. More details for MVR20D621K-S can be seen below.