STMicroelectronics

STW20NM50

STW20NM50 Description

The STW20NM50 from STMicroelectronics is an N-channel 550V, 20A power MOSFET designed for high-efficiency switching applications. Built using MDmesh™ technology, it delivers superior performance with low conduction losses and fast switching characteristics. The device features a low on-resistance (Rds(on)) of 250mΩ at 10V gate drive, ensuring minimal power dissipation. With a maximum gate charge (Qg) of 56nC and input capacitance (Ciss) of 1480pF, it offers optimized switching performance for demanding power conversion systems. The TO-247-3 package provides excellent thermal management, supporting a maximum power dissipation of 214W (Tc) and an operating junction temperature of up to 150°C.

STW20NM50 Features

• High Voltage Rating: 550V Vdss for robust performance in high-power applications.
• Low Rds(on): 250mΩ @ 10A, 10V reduces conduction losses, improving efficiency.
• MDmesh™ Technology: Enhances switching speed and reduces EMI.
• High Current Handling: 20A continuous drain current (Tc) for demanding loads.
• Wide Gate Drive Range: ±30V Vgs (max) for flexible drive circuit design.
• Thermal Efficiency: TO-247-3 package ensures effective heat dissipation.
• Reliability: ROHS3 compliant and REACH unaffected, meeting environmental standards.

STW20NM50 Applications

• Switched-Mode Power Supplies (SMPS): High-efficiency AC/DC and DC/DC converters.
• Motor Drives: Industrial and automotive motor control systems.
• Inverters: Solar inverters and UPS systems requiring high-voltage switching.
• Inductive Load Switching: Relays, solenoids, and high-power LED drivers.
• Electronic Ballasts: Lighting applications demanding fast switching and low losses.

Conclusion of STW20NM50

The STW20NM50 is a high-performance 550V MOSFET optimized for power electronics requiring low conduction losses, fast switching, and thermal stability. Its MDmesh™ technology and TO-247-3 package make it ideal for SMPS, motor drives, and inverters, offering superior efficiency and reliability. While marked as obsolete, its robust design ensures continued suitability for legacy and high-power systems where durability and performance are critical.