The JK-mSMD200SF with PTC Resettable Fuses 1812 RoHS is an electronic component manufactured by the Chinese company Jinkaisheng. This device contains two components: a standard JK-mSMD200SF integrated circuit that is designed to provide power protection, and a PTC Resettable Fuse 1812 RoHS. This part is made to provide reliable protection from short circuit, surge, over current and over heat conditions. The device is built with a small form factor that is suitable for various applications. Additionally, this component also complies with RoHS standards, meaning it is free of lead and other hazardous materials.