STP3NK80Z N-Channel MOSFET | 800V 2.5A TO-220AB Power Transistor

High-Performance STP3NK80Z N-Channel MOSFET for Demanding Power Applications

Engineered by STMicroelectronics' SuperMESH™ technology, the STP3NK80Z N-Channel MOSFET represents a perfect balance of robust performance and reliability in high-voltage power management systems. This advanced power transistor combines cutting-edge semiconductor design with the proven durability of TO-220 packaging, making it ideal for industrial and commercial power conversion applications where efficiency and thermal stability are critical.

Advanced Technical Specifications

Operating at an impressive 800V drain-source voltage rating, this MOSFET delivers consistent performance with a continuous drain current of 2.5A at 25°C. The device's optimized Rds(on) of 4.5Ω at 1.25A and 10V gate-source voltage ensures minimal power loss during operation. Its gate charge characteristic of 19nC at 10V enables rapid switching capabilities, while the ±30V gate-source voltage tolerance provides exceptional protection against voltage transients.

Designed for industrial environments, the STP3NK80Z maintains stable operation across extreme temperatures (-55°C to 150°C), with a maximum power dissipation of 70W at case temperature. The through-hole TO-220AB package facilitates efficient heat dissipation while maintaining compatibility with standard PCB layouts.

Key Performance Features

The STP3NK80Z's advanced design incorporates STMicroelectronics' proprietary SuperMESH™ technology, which significantly reduces on-resistance while maintaining exceptional breakdown voltage characteristics. This optimization results in improved energy efficiency and reduced thermal resistance, making it particularly suitable for power supply designs, motor control systems, and industrial automation equipment.

The device's 485pF input capacitance at 25V ensures stable operation in high-frequency switching applications, while the 4.5V gate threshold voltage (at 50µA) enables reliable turn-on characteristics. The TO-220 package's thermal performance allows for natural convection cooling in most standard operating conditions, eliminating the need for additional thermal management components in many applications.

Industrial Application Versatility

Engineers and designers benefit from the STP3NK80Z's wide range of applications including:

• Switch-mode power supplies (SMPS)
• Industrial motor drives
• Uninterruptible power supplies (UPS)
• Welding equipment
• High-voltage DC-DC converters

Its AEC-Q101 automotive qualification makes it suitable for both industrial and automotive power systems, while the active product status ensures long-term supply availability for production applications. The device's compliance with international safety standards and RoHS environmental requirements further enhances its appeal in modern power electronics design.

Design and Implementation Considerations

When integrating the STP3NK80Z into new designs, engineers should consider the following best practices:

• Implement proper gate drive circuitry with adequate current sourcing/sinking capability
• Ensure adequate PCB copper area for thermal management
• Use appropriate snubber circuits for inductive load applications
• Maintain gate-source voltage within specified limits
• Implement over-current protection mechanisms

These implementation guidelines help maximize device reliability and longevity while maintaining optimal system performance. The availability of comprehensive datasheets and application notes from STMicroelectronics further simplifies the design process.

Conclusion

The STP3NK80Z N-Channel MOSFET stands as a testament to STMicroelectronics' commitment to innovation in power semiconductor technology. By combining high-voltage capabilities with efficient thermal management and reliable switching performance, this device addresses the evolving demands of modern power electronics systems. Whether in industrial automation, power supply design, or automotive applications, the STP3NK80Z offers engineers a proven solution for creating efficient, reliable, and cost-effective power management systems.

Tags: Power Electronics, Industrial Components, Voltage Regulator, Power Switching, Semiconductor Devices