STW9NK90Z

The STW9NK90Z is a high-performance N-channel MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) manufactured by STMicroelectronics. It is designed for use in various applications, including power management, switching, and amplification in electronic circuits.

Key Features:

1. Voltage Rating: The STW9NK90Z has a maximum drain-source voltage (V_DS) of 900V, making it suitable for high-voltage applications.

2. Current Rating: It can handle a continuous drain current (I_D) of up to 9A at a specified temperature, which allows it to manage significant power loads.

3. R_DS(on): The on-resistance (R_DS(on)) is typically low, around 0.9 ohms at a gate-source voltage (V_GS) of 10V. This low on-resistance contributes to reduced power losses during operation, enhancing efficiency.

4. Gate Threshold Voltage: The gate threshold voltage (V_GS(th)) is in the range of 2V to 4V, which indicates the voltage required to turn the MOSFET on. This feature allows for compatibility with various control circuits.

5. Package Type: The STW9NK90Z is typically available in a TO-220 package, which provides good thermal performance and ease of mounting on heatsinks for effective heat dissipation.

6. Thermal Characteristics: The device has a maximum junction temperature (T_j) of 150°C, allowing it to operate in demanding thermal environments.

7. Fast Switching: The STW9NK90Z is designed for fast switching applications, making it suitable for use in switch-mode power supplies (SMPS), motor drivers, and other high-frequency applications.

8. Robustness: It features built-in protection against over-voltage and over-current conditions, enhancing reliability in various operating conditions.

Applications:

• Power Supplies: Ideal for use in high-voltage power supply circuits, including AC-DC converters and DC-DC converters.
• Motor Control: Suitable for driving motors in industrial applications, robotics, and consumer electronics.
• Lighting: Can be used in LED drivers and other lighting control applications.
• Inverters: Effective in solar inverters and UPS systems due to its high voltage and current handling capabilities.

Conclusion:

The STW9NK90Z is a versatile and reliable MOSFET that combines high voltage and current ratings with low on-resistance and fast switching capabilities. Its robust design makes it suitable for a wide range of applications in power electronics, ensuring efficient performance in demanding environments.