10D820K with Varistors 65V 135V 2.5KA is an through hole mounted RoHS (Restriction of Hazardous Substances Directive) compliant electronic component produced by Hongzhi. It is a Varistor used for circuit protection, providing voltage protection between 65 and 135 volts, up to a current of 2.5 kilo-Amps. This component can be quickly soldered to a circuit board and is ideal for use in many different applications, such as power supply protection, surge suppression, and overvoltage protection.