The M3E510E5LB7 from Littelfuse is a Varistor with AC Voltage Rating 510 V, DC Voltage Rating 670 V, Clamping Voltage 1355 V, Capacitance 140 pF, Temperature Operating Range -40 to 105 ºC. Tags: Through Hole. More details for M3E510E5LB7 can be seen below.