The MVS1206A340M551 from Meritek Electronics Corporation is a Varistor with AC Voltage Rating 26 V, DC Voltage Rating 34 V, Clamping Voltage 77 V, Capacitance 550 pF, Temperature Operating Range -55 to 125 Degree C. Tags: Surface Mount. More details for MVS1206A340M551 can be seen below.