Application fields and module examples:

1. **High voltage switching power supply**
IRF620-VB is suitable for high voltage switching power supply systems. Its 200V drain-source voltage capability enables it to handle high voltage loads. In the switching power supply, this MOSFET can efficiently control the power switch to ensure stable power output.

2. **Power amplifier circuit**
This MOSFET also performs well in power amplifier circuits, especially when dealing with high voltage power amplifiers. It can stably control power output and is suitable for wireless communication and broadcasting equipment to provide reliable signal amplification.

3. **Motor drive**
In motor drive applications, IRF620-VB can be used to control the start, stop and speed regulation of high voltage motors. Its high voltage and high current capabilities enable it to cope with high load requirements in motor systems, ensuring the stability and efficiency of motor operation.

4. **High Voltage Protection Circuit**
IRF620-VB is suitable for high voltage protection circuits, such as overvoltage and overcurrent protection. Its ability to withstand higher voltages makes it perform well in protection circuits, protecting other electronic components from voltage fluctuations and current overloads.