STW21N90K5 N-Channel MOSFET 900V 18.5A TO-247-3 | STMicroelectronics SuperMESH5™ Power Transistor

Advanced Power Solutions with STW21N90K5 N-Channel MOSFET

In modern power electronics, selecting components that balance performance, reliability, and efficiency is critical. The STW21N90K5 N-Channel MOSFET from STMicroelectronics delivers exceptional capabilities for high-voltage applications, combining cutting-edge SuperMESH5™ technology with robust design principles. This 900V power transistor is engineered to meet the demands of industrial systems requiring precise control and thermal stability.

Technical Specifications for High-Performance Applications

Designed with a 900V drain-source voltage rating and 18.5A continuous drain current capacity, this TO-247-3 packaged transistor excels in power conversion systems. Its optimized on-resistance of 299mΩ at 9A and 10V gate drive ensures minimal power losses while maintaining exceptional switching performance. The device's ±30V gate voltage tolerance provides design flexibility for various control schemes.

The STW21N90K5's 43nC gate charge at 10V operation reduces switching losses in high-frequency applications, making it ideal for modern power supplies and motor control systems. With 1645pF input capacitance at 100V, this transistor maintains stable performance across diverse operating conditions while its -55°C to 150°C operating temperature range ensures reliability in extreme environments.

SuperMESH5™ Technology Advantages

STMicroelectronics' proprietary SuperMESH5™ technology enables this transistor to achieve superior avalanche energy ratings and enhanced thermal management. The advanced cell design minimizes conduction losses while maintaining excellent short-circuit withstand capability. This combination of features makes the STW21N90K5 particularly well-suited for demanding applications like solar inverters, industrial power supplies, and motor drives where reliability is paramount.

The device's through-hole TO-247-3 packaging facilitates efficient heat dissipation while maintaining mechanical stability in vibration-prone environments. Its 5V gate threshold voltage at 100µA ensures compatibility with standard driver circuits while maintaining precise control over switching characteristics.

Industrial Application Versatility

This power transistor's performance characteristics make it ideal for various industrial applications including:

• High-voltage DC-DC converters
• Uninterruptible power supplies (UPS)
• Industrial motor control systems
• Renewable energy inverters
• High-power LED lighting systems

The STW21N90K5's 250W power dissipation rating at case temperature ensures reliable operation even in high-power density designs. Its robust design meets the requirements of IEC 60146 standards for power semiconductor devices, making it suitable for safety-critical applications.

Reliability and Manufacturing Excellence

As part of STMicroelectronics' premium transistor portfolio, the STW21N90K5 undergoes rigorous quality control processes to ensure consistent performance across production batches. The device's active product status indicates ongoing manufacturing support and availability, providing design engineers with long-term supply chain confidence.

Tags: Power Electronics, High Voltage MOSFET, Industrial Transistors, Energy Efficiency, Power Supply Components