This post explains for the mosfet.
The Part Number is AP4501GSD.
The function of this semiconductor is N and P-Channel Power MOSFET.
The package is DIP 8 Pin Type
Manufacturer: Advanced Power Electronics
The Advanced Power MOSFETs from APEC provide the designer with the best combination of fast switching, ruggedized device design, low on-resistance and costeffectiveness.
4501GSD is N and P-Channel Power MOSFET. N-channel and P-channel power MOSFETs are types of metal-oxide-semiconductor field-effect transistors designed to handle high power levels in electronic circuits. They are commonly used in various applications such as power supplies, motor drives, amplifiers, and switching circuits.
1. Simple Drive Requirement
2. Low On-resistance
3. Fast Switching Characteristic
It’s important to note that both N-channel and P-channel MOSFETs are often used in complementary pairs to implement various types of power switching circuits. The choice between N-channel and P-channel MOSFETs depends on the specific requirements of the circuit, such as voltage levels, current levels, and switching speed considerations.