The 271KD07J is a Varistor manufactured by Yageo. It is an electronic component that consists of two or more nonlinear resistors connected in series in order to protect sensitive circuits from electrical transients and to prevent current overloading. This component is housed in a through-hole package and is conformal to the RoHS directive. This Varistor has a maximum continuous operating voltage of 700V, a peak non-repetitive surge current of 500A, and a breakdown voltage of 7V. Its high current handling and voltage ratings make it ideal for use in various switching power supplies, motor controllers, and telecom systems.