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STW20NM50FD
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STW20NM50FD Description
STW20NM50FD Description
The STW20NM50FD from STMicroelectronics is a high-performance N-channel 500V, 20A power MOSFET designed for demanding switching applications. Packaged in a robust TO-247-3 format, it features FDmesh™ technology, delivering ultra-low on-resistance (250mΩ @ 10A, 10V) and superior switching efficiency. With a gate charge (Qg) of 53nC @ 10V and input capacitance (Ciss) of 1380pF @ 25V, it ensures fast switching speeds while minimizing power losses. The device operates reliably up to 150°C (TJ) and supports a ±30V gate-source voltage (Vgs), making it suitable for high-voltage environments.
STW20NM50FD Features
- High Voltage & Current Rating: 500V Vdss and 20A continuous drain current (Id) for robust power handling.
- Low Rds(on): 250mΩ @ 10V Vgs ensures minimal conduction losses.
- Fast Switching: Optimized Qg (53nC) and Ciss (1380pF) for efficient high-frequency operation.
- Thermal Performance: 214W (Tc) power dissipation and TO-247-3 package for superior heat management.
- Reliability: ROHS3 compliant, REACH unaffected, and MSL 1 (unlimited) for long-term durability.
- Wide Vgs Range: ±30V gate drive tolerance enhances flexibility in circuit design.
STW20NM50FD Applications
- Switched-Mode Power Supplies (SMPS): Ideal for AC-DC converters and high-voltage DC-DC stages.
- Motor Drives & Inverters: Efficiently controls brushless DC (BLDC) motors and industrial inverters.
- Renewable Energy Systems: Suitable for solar inverters and wind power converters due to high voltage tolerance.
- Industrial & Automotive Systems: Used in power factor correction (PFC), UPS systems, and electric vehicle (EV) charging.
Conclusion of STW20NM50FD
The STW20NM50FD stands out as a high-efficiency, high-reliability MOSFET for 500V power switching applications. Its low Rds(on), fast switching, and thermal robustness make it a preferred choice for SMPS, motor drives, and renewable energy systems. With STMicroelectronics' FDmesh™ technology, it outperforms conventional MOSFETs in power density and energy efficiency, ensuring optimal performance in demanding industrial and automotive environments.



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