STMicroelectronics

STF12NM50ND

STF12NM50ND Description

The STF12NM50ND from STMicroelectronics is an N-channel 500V power MOSFET designed for high-efficiency switching applications. Part of the FDmesh™ II series, it leverages advanced Metal Oxide Semiconductor (MOSFET) technology to deliver low on-resistance (380mΩ @ 10V, 5.5A) and high current handling (11A continuous drain current @ 25°C). With a gate charge (Qg) of 30nC and input capacitance (Ciss) of 850pF, it ensures fast switching performance while minimizing power losses. The device is housed in a TO220FP package, offering robust thermal dissipation (25W max power dissipation) and mechanical durability.

STF12NM50ND Features

• High Voltage Rating: 500V Vdss for demanding power applications.
• Low Rds(on): 380mΩ @ 10V reduces conduction losses, improving efficiency.
• Fast Switching: Optimized gate charge (30nC) and low Ciss (850pF) enhance switching speed.
• Thermal Performance: TO220FP package with 150°C max junction temperature ensures reliability.
• Drive Compatibility: 10V drive voltage for easy integration with standard gate drivers.
• Compliance: ROHS3, REACH Unaffected, and EAR99 classification for global use.

STF12NM50ND Applications

• Switched-Mode Power Supplies (SMPS): High-voltage DC-DC converters and PFC stages.
• Motor Drives: Efficient control in industrial and automotive systems.
• Lighting: LED drivers and ballast circuits requiring high-voltage switching.
• Renewable Energy: Inverters for solar/wind power applications.
• Industrial Equipment: Reliable performance in harsh environments.

Conclusion of STF12NM50ND

The STF12NM50ND is a high-performance 500V MOSFET optimized for efficiency, speed, and thermal management. Its FDmesh™ II technology and low Rds(on) make it ideal for power electronics where energy efficiency and reliability are critical. While marked Obsolete, it remains a robust choice for legacy designs or applications requiring proven performance. Engineers should consider alternative STMicroelectronics models for new designs while leveraging this part’s strengths in existing systems.