TK40E10N1,S1X(S is a N-channel MOSFET transistor manufactured by Toshiba. It uses unipolar technology and has a maximum drain-source breakdown voltage of 100V, a maximum drain current of 40A, a maximum power dissipation of 126W, and a TO220AB package. It is designed for digital switching, speed control, macromodeling, and load switching in consumer and industrial applications.