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STW21N90K5

STW21N90K5 Description

The STW21N90K5 from STMicroelectronics is a 900V N-channel SuperMESH5™ MOSFET designed for high-efficiency power switching applications. Built using advanced Metal Oxide Semiconductor (MOSFET) technology, it delivers robust performance with a continuous drain current (Id) of 18.5A (Tc) and a low on-resistance (Rds(on)) of 299mΩ at 10V gate drive. The device features a high drain-to-source voltage (Vdss) rating of 900V, making it suitable for demanding high-voltage circuits. Packaged in a TO-247-3 through-hole format, it ensures excellent thermal dissipation with a maximum power rating of 250W (Tc).

STW21N90K5 Features

• SuperMESH5™ Technology: Enhances switching efficiency and reduces conduction losses.
• Low Gate Charge (Qg): 43nC @ 10V minimizes switching losses, improving high-frequency performance.
• High Voltage Tolerance: 900V Vdss ensures reliability in high-voltage applications.
• Low Input Capacitance (Ciss): 1645pF @ 100V for faster switching transitions.
• Wide Gate-Source Voltage Range (Vgs): ±30V allows flexible drive circuit design.
• Robust Thermal Performance: TO-247-3 package optimizes heat dissipation.
• Compliance: ROHS3 and REACH compliant, with MSL 1 (Unlimited) moisture sensitivity.

STW21N90K5 Applications

• Switched-Mode Power Supplies (SMPS): High-voltage DC-DC converters and PFC stages.
• Industrial Motor Drives: Efficient switching in inverters and motor control systems.
• Renewable Energy Systems: Solar inverters and wind power converters.
• High-Voltage Power Supplies: Telecom and server power units requiring 900V+ operation.
• Automotive & EV Charging: Auxiliary power modules and fast-charging infrastructure.

Conclusion of STW21N90K5

The STW21N90K5 is a high-performance 900V MOSFET optimized for efficiency, thermal management, and reliability in demanding power electronics. Its SuperMESH5™ architecture, low gate charge, and high voltage rating make it ideal for industrial, renewable energy, and automotive applications. With STMicroelectronics' proven quality, this device is a strong choice for engineers designing high-efficiency, high-voltage switching systems.