The ZV 4 M 1812 501 HT from Bourns is a Varistor with AC Voltage Rating 4 V, DC Voltage Rating 5.5 V, Clamping Voltage 14 V, Capacitance 10000 pF, Temperature Operating Range -55 to 150 Degree C. Tags: Surface Mount. More details for ZV 4 M 1812 501 HT can be seen below.