The 20D751K with Varistors 615V 1240V 6.5KA Plugin RoHS manufactured by Ruilongyuan is a compact freestanding electronic component designed to protect circuits against overvoltage transients. It is made from a non-linear resistance material that provides protection against electrical surges. The component features 615V and 1240V for the varistor rating, a response time of less than 1 ns, and a maximum sustained current of 6.5KA. It is RoHS compliant, has a wide temperature range, and has a plugin design for easy installation on printed circuit boards.