The AMCV-0402-5R5-C180 from Abracon is a Varistor with AC Voltage Rating 4 V, DC Voltage Rating 5.5 V, Clamping Voltage 18 to 23 V, Capacitance 18 pF, Temperature Operating Range -55 to 125 ºC. Tags: Surface Mount. More details for AMCV-0402-5R5-C180 can be seen below.