The APT1003RSLLG with MOSFET FG, MOSFET, 1000V, 3.0_OHM, D3, RoHS, TO-268 is an electronic part produced by Microchip. It features a flange gate MOSFET, which is a type of Field Effect Transistor that allows for high speed on/off switching using electric current. The package is a TO-268 US standard, and is rated to handle up to a 1000V voltage. It has a low resistance of 3.0 ohms, allowing it to handle high currents. It is complaint with RoHS, an international directive for the restriction of hazardous substances, meaning it has reduced hazardous components compared to other products.