The FSDM0565R is an integrated Pulse Width Modulator (PWM) and Sense FET specifically designed for high performance offline Switch Mode Power Supplies (SMPS) with minimal external components TO-220F-6Pins Packge.
The MJE340 is a silicon planar NPN transistor intended for use in medium power linear and switching applications. It is mounted in TO126. The complementary PNP type is MJE350.
The TIP42C is a base island technology PNP power transistor in TO-220 plastic package that make this device suitable for audio, power linear and switching applications. The complementary NPN type is TIP41C.