ISTEKThe 07D471K is a through-hole varistor manufactured by COVISTEK. It is RoHS compliant and is rated with a rated voltage of 385V to 810V and a peak current of 1.2KA. It is designed to protect electrical circuits from overvoltage conditions by limiting the voltage applied across its terminals. It has a wide range of applications, including use in surge protection, suppression of “ringing” phenomenon due to the use of long overvoltage lines, and other electronic applications. It has good EMC characteristics and can withstand a large transient surge current.