The ZV 6 M 1812 501 from Bourns is a Varistor with AC Voltage Rating 6 V, DC Voltage Rating 8 V, Clamping Voltage 21 V, Capacitance 7500 pF, Temperature Operating Range -55 to 125 Degree C. Tags: Surface Mount. More details for ZV 6 M 1812 501 can be seen below.