The JK-SMD1210-050 manufactured by Jinrui Electronic Materials is a 1210 RoHS-compliant, PTC Resettable Fuses, also known as PPTC devices. This surface-mount, Polymer Positive Temperature Coefficient (PPTC) resettable fuse offers an improved solution to traditional ceramic fuses. It features a self-regulating property that protects electric components from overcurrent damage and the need for frequent replacement of traditional fuses. The device will open circuit when it is subjected to an overcurrent and will automatically reset to its low resistance state when the over current condition has subsided. In addition, this PPTC thermally-blown fuse is RoHS-compliant to support green initiatives in the electronics industry.