The 20D331K Varistor with Through-Hole mounting type manufactured by SOCAY is an electronic component designed to provide protection from overvoltage transients in electronic circuits. This device is built with a Pb-free and RoHS compliant package and is suitable for the applications with high frequency circuit, communications, control, automation and power supply systems. The device has an operating voltage of 15VDC and a max energy of 12 J. Additionally, This device features high rated voltage, low capacitance and good absorption performance in high frequency working conditions.