STW12NK90Z

The STW12NK90Z 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. Here’s a detailed description of its key features and specifications:

Key Features:

1. N-Channel Configuration: The STW12NK90Z is an N-channel MOSFET, which means it uses electrons as the charge carriers, providing high efficiency and fast switching capabilities.

2. Voltage Rating: It has a maximum drain-source voltage (V_DS) of 900V, making it suitable for high-voltage applications. This high voltage rating allows it to be used in power supplies, motor drives, and other high-voltage circuits.

3. Current Rating: The device can handle a continuous drain current (I_D) of up to 12A at a specified temperature, which makes it capable of driving significant loads.

4. R_DS(on): The on-resistance (R_DS(on)) is typically low, around 0.12 ohms at a gate-source voltage (V_GS) of 10V. This low on-resistance minimizes power losses during operation, enhancing overall efficiency.

5. Gate Threshold Voltage (V_GS(th)): The gate threshold voltage is typically between 2V and 4V, allowing for easy drive with standard logic levels.

6. Thermal Characteristics: The STW12NK90Z has a maximum junction temperature (T_j) of 150°C, which provides a good thermal margin for operation in demanding environments. It also features a low thermal resistance, allowing for effective heat dissipation.

7. Package Type: The MOSFET is available in a TO-220 package, which is a popular choice for power devices due to its robust construction and good thermal performance. The TO-220 package allows for easy mounting on heatsinks for improved thermal management.

8. Fast Switching Speed: The device is designed for fast switching applications, making it suitable for use in high-frequency circuits, such as switch-mode power supplies (SMPS) and DC-DC converters.

9. Applications: The STW12NK90Z is widely used in various applications, including:

   • Power supplies (AC-DC and DC-DC converters)
   • Motor control circuits
   • Lighting control systems
   • Industrial automation
   • Automotive applications

Electrical Characteristics:

• V_DS (Max): 900V
• I_D (Max): 12A
• R_DS(on): 0.12Ω (typical at V_GS = 10V)
• V_GS(th): 2V to 4V
• T_j (Max): 150°C

Conclusion:

The STW12NK90Z is a versatile and reliable N-channel MOSFET that offers high voltage and current handling capabilities, low on-resistance, and fast switching performance. Its robust design and thermal characteristics make it an excellent choice for a wide range of power electronics applications. Whether used in consumer electronics, industrial systems, or automotive applications, the STW12NK90Z provides efficient and effective performance.