The JK-MSMD050-30 with PTC Resettable Fuses 1812 RoHS manufactured by Jinrui Electronic Materials is an electronic part specifically designed for overcurrent and over temperature protection in electronic circuits. The element features a quick-act, self-resetting Positive Temperature Coefficient (PTC) polymer resettable fuse. The fuse provides overcurrent protection (OCP) and Over Temperature protection (OTP) for very low voltage circuits up to 5.0V. It has a current rating of 0.5A which prevents overload on the circuit it is protecting. Additionally, the fuse is designed to last a minimum of 500 cycles, ensuring reliable performance for a long period of time. This product has been validated to meet the RoHS standard, meaning it is free from hazardous substances that can be harmful to the environment.