The SMF4N65 with 650V 4A 33W 2.6O@10V,2A N Channel TO-220F-3 MOSFETs ROHS manufactured by HUAKE is a device used to control the flow of current in Electronic circuits. MOSFET stands for Metal Oxide Semiconductor Field Effect Transistor, which acts as a switch when used in a circuit. It is designed to work in a manner which will not dissipate heat, thereby increasing power efficiency. In the TO-220F-3 package, the MOSFET has a total of three pins, Gate, Source and Drain. The voltage rating of this device is 650V, the current rating of this device is 4A, the power dissipation is 33W and its resistance at 10V and 2A is 2.6O. The MOSFET is RoHS compliant, meaning that it is free from Lead, Cadmium, Mercury or any other hazardous materials that could compromise the safety of people or the environment.