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 IRFZ44N is a 55V 49A TO-220 Package MOSFET family of power MOSFETs utilizes proven silicon processes a wide portfolio of devices to support various applications as well as battery powered applications.
The BC548 is a NPN transistor hence the collector and emitter will be left open (Reverse biased) when the base pin is held at ground and will be closed (Forward biased) when a signal is provided to base pin.
