The JK250-110U is an electronic part manufactured by Yenji that consists of a PTC (positive temperature coefficient) fuse and DIP (dual inline package) RoHS (Restriction of Hazardous Substances) compliant lead-free housing. The part has a rated voltage of 110 volts, a rated current of 250 amps, and a maximum power rating of 30 watts. It is designed to protect electronic components from overheating or overcurrent, and features open-circuit protection, fast-blow characteristics, and a compact size. It is suitable for use in a wide range of applications, including automotive, telecommunication, consumer electronics, and other industrial applications.