The TND20SV621KB00AAA0 from Nippon Chemi Con is a Varistor with AC Voltage Rating 385 V, DC Voltage Rating 505 V, Clamping Voltage 1025 V, Capacitance 900 pF, Temperature Operating Range -40 to 125 Degree C. Tags: Through Hole. More details for TND20SV621KB00AAA0 can be seen below.