The FTR20D681K is a Varistor manufactured by FTR Electronics. It is designed to provide overvoltage protection in electronic circuits, and is suitable for applications ranging from telecommunications equipment to home appliances. The device is a rated 560V 1120V 6.5KA Through Hole, P=10mm RoHS component and is capable of handling sustained energy levels up to 6.5 kA. Its specialized design consists of a ceramic body encapsulated in epoxy resin, offering excellent resistance to humidity and temperature. It is also designed to be vibration and impact resistant, enabling it to withstand environmental stress. The FTR20D681K is a reliable and cost-effective solution for a variety of applications requiring surge protection.