The SV 510 K 23 from Bourns is a Varistor with AC Voltage Rating 510 V, DC Voltage Rating 670 V, Clamping Voltage 1200 V, Capacitance 1000 pF, Temperature Operating Range -40 to 85 Degree C. Tags: Through Hole. More details for SV 510 K 23 can be seen below.