STMicroelectronics

STL75N8LF6

STL75N8LF6 Description

The STL75N8LF6 from STMicroelectronics is an N-channel 80V, 75A power MOSFET designed for high-efficiency switching applications. Built using DeepGATE™ and STripFET™ VI technologies, it offers ultra-low on-resistance (Rds(on)) of 7.4mΩ @ 10V, minimizing conduction losses. The device features a PowerFlat™ (5x6) surface-mount package, optimized for space-constrained designs while ensuring excellent thermal performance with a maximum power dissipation of 80W (Tc). Though marked as obsolete, it remains a robust choice for legacy or cost-sensitive designs requiring high current handling and low-voltage drive capability.

STL75N8LF6 Features

• Low Rds(on): 7.4mΩ @ 9A, 10V ensures reduced power loss in high-current applications.
• High Current Capacity: 75A continuous drain current (Tc) supports demanding loads.
• Fast Switching: Low gate charge (Qg) of 125nC @ 4.5V and input capacitance (Ciss) of 6895pF @ 25V enhance switching efficiency.
• Compact Package: PowerFlat™ (5x6) offers superior thermal resistance and PCB space savings.
• Compliance: ROHS3 and REACH compliant, with MSL 1 (Unlimited) moisture sensitivity.
• Wide Drive Voltage Range: Optimized for 5V–10V gate drive, compatible with modern controllers.

STL75N8LF6 Applications

• Power Supplies: High-efficiency DC-DC converters, SMPS, and voltage regulators.
• Motor Control: Ideal for brushed/brushless motor drives in industrial and automotive systems.
• Battery Management: Used in protection circuits and load switches for Li-ion/power tool batteries.
• LED Lighting: Efficient driver solutions for high-power LED arrays.
• Automotive Systems: Suitable for 48V mild-hybrid and auxiliary power distribution.

Conclusion of STL75N8LF6

The STL75N8LF6 combines low conduction losses, high current density, and compact packaging, making it a strong candidate for power electronics despite its obsolete status. Its DeepGATE™ technology ensures reliable performance in high-frequency switching, while the PowerFlat™ package addresses thermal challenges in dense layouts. Engineers designing high-current, low-voltage systems—particularly in automotive, industrial, and energy applications—can leverage its balance of efficiency and cost-effectiveness. For newer designs, consider STMicroelectronics' latest alternatives within the STripFET™ series for enhanced features.