This SMD1812P200TF device is a PTC (Positive Temperature Coefficient) Resettable Fuse from Polytronics compliant to RoHS (Restriction of Hazardous Substances). It is an ultra-low resistance, self-resetting polymeric fuse ideal for applications requiring over-current protection and high reliability. It is a surface-mount, 1812-size package with a maximum current rating of 200mA. It has short-circuit protection capability, a high breaking capacity, and is lead-free. The device can be put into a circuit in place of glass fuses and has a permanent temperature coefficient to guard against electronic shocks, while enabling overvoltage protection.