The 221KK07 from Yageo is a Metal Oxide Varistor that is ideal for transistors, diodes, ICs, thyristors, and triac protection, surge protection in consumer and industrial electronics, surge protection in electronic home appliances, gas, and petroleum appliances, and electromagnetic surge absorption applications. It has an AC voltage rating of 140 V, a DC voltage rating of 180 V, and a clamping voltage of 360 V. This flame-retardant varistor offers charge absorbing transient energy capability, low clamping ratio, and no follow-on current. It provides fast response to transient over-voltage events in the circuit. This RoHS-compliant varistor is available in a through-hole package that measures 32 x 9 mm.