The SMD1812-030 is a resettable fuses manufactured by Jinkaisheng and it is RoHS compliant. It is an SMD type fuse, which is a type of fuse that is designed for surface mounting onto a printed circuit board (PCB) for use in a variety of electronic applications. It has a rated voltage of 30V, current rating of 300mA, surge current rating of 100A, power dissipation rate of 800mW, nominal hold current of 600mA, internal resistance of 250mO, time to reset or trip of 0.1s, and series resistance of 3O. This SMD1812-030 resettable fuse is packaged in a small 1812 size that is ideal for space-constrained applications.