STMicroelectronics

STW15NB50

STW15NB50 Description

The STW15NB50 from STMicroelectronics is a 500V N-channel PowerMESH™ MOSFET designed for high-efficiency power switching applications. Housed in a TO-247-3 package, it delivers a continuous drain current (Id) of 14.6A (Tc) and features a low on-resistance (Rds(on)) of 360mΩ at 10V gate drive, ensuring minimal conduction losses. With a maximum power dissipation of 190W (Tc) and an operating junction temperature up to 150°C, this MOSFET is engineered for robust performance in demanding environments. Although marked as obsolete, it remains a reliable choice for legacy designs requiring high-voltage switching.

STW15NB50 Features

• High Voltage Rating: 500V Vdss for industrial and automotive applications.
• Low Gate Charge (Qg): 80nC @ 10V reduces switching losses, improving efficiency.
• Fast Switching: Optimized input capacitance (Ciss: 3400pF @ 25V) for high-frequency operation.
• Thermal Resilience: MSL 1 (Unlimited) moisture sensitivity and ±30V Vgs(max) tolerance.
• PowerMESH™ Technology: Enhances current handling and thermal performance compared to standard MOSFETs.

STW15NB50 Applications

• Switched-Mode Power Supplies (SMPS): High-voltage DC-DC converters and PFC stages.
• Motor Drives: Inverter bridges for industrial and automotive systems.
• Lighting: Ballasts and LED drivers requiring efficient high-voltage switching.
• Renewable Energy: Solar inverters and battery management systems.

Conclusion of STW15NB50

The STW15NB50 excels in high-voltage, high-current applications, offering a balance of low Rds(on), fast switching, and thermal stability. While obsolete, its PowerMESH™ design and TO-247-3 package make it a durable option for legacy or cost-sensitive projects. Ideal for engineers seeking a proven 500V MOSFET with robust performance in industrial, automotive, and energy systems.