STMicroelectronics

STB21NK50Z

STB21NK50Z Description

The STB21NK50Z is a high-performance N-Channel MOSFET from STMicroelectronics, designed for automotive applications. It features a SuperMESH™ structure for improved performance and reliability. The device is available in a D2PAK package and operates within a wide temperature range of -40°C to 150°C (TJ). Despite being classified as obsolete, it remains a popular choice for certain applications due to its unique features and advantages.

STB21NK50Z Features

• High Voltage Rating: The STB21NK50Z can withstand drain-to-source voltages up to 500V, making it suitable for high-voltage applications.
• Low On-Resistance: With a maximum Rds(on) of 270mOhm at 8.5A and 10V, the device offers low conduction losses and high efficiency.
• High Current Capability: The continuous drain current rating is 17A at 25°C, allowing it to handle significant current loads.
• Fast Switching Speed: The device has a low gate charge (Qg) of 119nC at 10V, enabling fast switching and reduced switching losses.
• Robust Gate Drive: The maximum gate-source voltage (Vgs) is ±30V, providing a wide operating range and increased robustness.
• Automotive Grade: Designed for automotive applications, the STB21NK50Z meets the stringent requirements of the automotive industry.
• RoHS Compliance: The device is compliant with RoHS3 regulations, ensuring environmental friendliness and compliance with global standards.

STB21NK50Z Applications

The STB21NK50Z is ideal for a variety of high-voltage, high-current applications in the automotive sector, including:

• Power Train Systems: Due to its high voltage and current ratings, the STB21NK50Z is suitable for power train control systems in electric and hybrid vehicles.
• Battery Management: The device can be used in battery management systems for electric vehicles, where high voltage and current handling capabilities are crucial.
• DC-DC Converters: The STB21NK50Z can be employed in high-efficiency DC-DC converters for automotive applications, benefiting from its low on-resistance and fast switching speed.
• Motor Control: The device is well-suited for motor control applications, where high voltage, current, and switching speed are essential.

Conclusion of STB21NK50Z

While the STB21NK50Z is classified as obsolete, it remains a popular choice for certain high-voltage, high-current automotive applications due to its unique features and advantages. Its SuperMESH™ structure, high voltage and current ratings, low on-resistance, and fast switching speed make it an ideal choice for power train systems, battery management, DC-DC converters, and motor control applications. Despite its obsolescence, the STB21NK50Z continues to deliver reliable performance in demanding automotive environments.