STMicroelectronics

STW25NM50N

STW25NM50N Description

The STW25NM50N from STMicroelectronics is a 500V N-channel Power MOSFET belonging to the MDmesh™ II series, designed for high-efficiency power switching applications. With a continuous drain current (Id) rating of 22A (at Tc=25°C) and a low on-resistance (Rds(on)) of 140mΩ (at 11A, 10V), this MOSFET delivers robust performance in demanding environments. Its 500V drain-to-source voltage (Vdss) and ±25V gate-source voltage (Vgs) tolerance ensure reliability in high-voltage circuits. The device features an input capacitance (Ciss) of 2565pF @ 25V and a gate charge (Qg) of 84nC @ 10V, optimizing switching efficiency. Though marked as obsolete, it remains a viable choice for legacy designs requiring high-voltage handling and low conduction losses.

STW25NM50N Features

• High Voltage Rating: 500V Vdss for industrial and automotive applications.
• Low Rds(on): 140mΩ @ 10V Vgs, minimizing conduction losses.
• Fast Switching: Optimized Qg (84nC) and Ciss (2565pF) for efficient high-frequency operation.
• Robust Construction: TO-247-3 through-hole package ensures excellent thermal dissipation (160W max power dissipation).
• Reliability: ROHS3 compliant, REACH unaffected, and MSL 1 (unlimited) moisture sensitivity.
• MDmesh™ II Technology: Enhanced switching performance and reduced EMI compared to standard MOSFETs.

STW25NM50N 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.
• Lighting: High-power LED drivers and ballasts.
• Industrial Automation: Power management in PLCs and robotic systems.

Conclusion of STW25NM50N

The STW25NM50N is a high-performance 500V N-channel MOSFET offering low Rds(on), fast switching, and robust thermal characteristics. While obsolete, its MDmesh™ II technology and TO-247-3 package make it suitable for legacy designs in power supplies, motor drives, and inverters. Engineers seeking a balance of high voltage tolerance and efficiency may still find value in this component for specialized applications.