The M3E320E5LB7 from Littelfuse is a Varistor with AC Voltage Rating 320 V, DC Voltage Rating 420 V, Clamping Voltage 840 V, Capacitance 270 pF, Temperature Operating Range -40 to 105 ºC. Tags: Through Hole. More details for M3E320E5LB7 can be seen below.