The 5D471KJ is a Varistor with Through Hole Soldering Technology, manufactured by SOCAY. It is RoHS compliant and is composed of a non-linear element, able to absorb surges and spikes in the circuit and protect other components from overvoltages. This model has mainly a 1.4µA maximum current rating, and offer a 471Vmax voltage rating, 0.113O Resistance, 164J Energy Absorption, and 110ACV AC Voltage Rating. It is usually used in the protection of equipment from lightning strikes, surges, and spikes.