The SMK0460FN is a MOSFET N Trench 600V 4A (Tc) 4V @ 250uA 2.5 Ω @ 2A, 10V TO-220F (TO-220IS) RoHS manufactured by Kodenshi. It is a metal-oxide-semiconductor field-effect transistor (MOSFET) designed to switch high voltages and currents up to 600V and 4A respectively. It is an N-channel MOSFET which means it is best used for switching Negative voltage signals. It has a breakdown voltage of 600V and a maximum operating temperature of 125 degrees Celsius. The on-resistance is rated to be 2.5 O @ 2A. It is a RoHS compliant product, meaning it does not contain any hazardous substances, like lead, mercury, or hexavalent chromium. It is widely used for switchmode power supplies, audio amplifiers, motor control, and high-side power switching applications.