The JK-mSMD125SF with PTC Resettable Fuses 1812 RoHS by Jinkaisheng is a surface-mountable component designed for use in electronic circuits. It is a lead-free, high-current 125A PTC resettable fuse that is RoHS compliant. The fuse features a wide range of operating temperatures and current ratings, making it suitable for a variety of applications. The fuse is designed with a protective cover layer with a variety of markings and pin sizes to ensure stable performance. The device is applicable for both DC and AC circuits as well as high-voltage power applications. It can be used in mobile phones, notebook computers, air conditioners, electric vehicles, and other related consumer electronics.