The VPORT0402L181V05 from Inpaq Technology is a Varistor with AC Voltage Rating 4 V, DC Voltage Rating 5.5 V, Clamping Voltage 34 V, Capacitance 126 to 234 pF, Temperature Operating Range -40 to 85 ºC. Tags: Surface Mount. More details for VPORT0402L181V05 can be seen below.