The M3E420E5LB7 from Littelfuse is a Varistor with AC Voltage Rating 420 V, DC Voltage Rating 560 V, Clamping Voltage 1120 V, Capacitance 200 pF, Temperature Operating Range -40 to 105 ºC. Tags: Through Hole. More details for M3E420E5LB7 can be seen below.