The FDPF18N50 is a 500V N-MOSFET unipolar transistor manufactured by ON Semiconductor. It has a drain-source maximum voltage rating of 500V, a maximum drain current of 10.8A, a maximum power dissipation of 38.5W, and is housed in a TO220FP package. This MOSFET is well-suited for use in industrial motor controls, switched mode power supplies, amplifiers, and switching applications.