STM STL3NK40 N-Channel MOSFET 400V 430mA PowerFLAT Package
- Brand: STMicroelectronics
- Product Code: STL3NK40
- Availability: In Stock
$1.50
- Ex Tax: $1.50
High-Performance STM STL3NK40 N-Channel MOSFET for Demanding Power Applications
STMicroelectronics continues to push the boundaries of power semiconductor technology with its SuperMESH™ series, and the STL3NK40 stands as a testament to this innovation. This advanced N-Channel MOSFET combines high voltage capability with exceptional thermal performance, making it ideal for industrial power supplies, motor control systems, and energy-efficient converter designs. Engineered with ST's proprietary PowerFLAT™ (5x5) packaging, this device offers superior power density while maintaining surface-mount compatibility for modern PCB layouts.
Technical Excellence in Power Management
At the heart of the STL3NK40's capabilities lies its 400V drain-source voltage rating, which ensures reliable operation in high-voltage environments. The device maintains a continuous drain current of 430mA at 25°C, with a remarkably low on-state resistance of 5.5Ω measured at 220mA and 10V gate-source voltage. This combination of specifications enables minimal conduction losses, particularly valuable in applications requiring high-efficiency power conversion.
The device's advanced gate charge characteristics further enhance its switching performance. With a maximum gate charge of 13nC at 10V, designers can achieve faster switching transitions while maintaining control over power dissipation. The 2V gate threshold voltage (measured at 50µA) ensures compatibility with standard logic-level drive circuits, simplifying integration with modern microcontroller-based systems.
| Parameter | Value |
|---|---|
| Max Vdss | 400V |
| Continuous Id | 430mA |
| Rds(on) Max | 5.5Ω @ 220mA, 10V |
| Gate Charge (Qg) | 13nC @ 10V |
| Operating Temp | -55°C to 150°C |
Thermal Performance and Packaging Innovation
The PowerFLAT™ packaging technology employed in the STL3NK40 represents a significant advancement in thermal management. This 8-PowerVDFN package combines low thermal resistance with a compact footprint, enabling efficient heat dissipation even under heavy load conditions. The surface-mount design facilitates automated assembly processes while maintaining mechanical robustness in demanding environments.
With a maximum power dissipation rating of 2.5W at case temperature, this MOSFET demonstrates exceptional thermal stability. The ±20V gate-source voltage tolerance provides additional design flexibility, while the 200pF input capacitance (measured at 25V) contributes to controlled switching characteristics. These features collectively make the device suitable for both continuous and pulsed operation scenarios.
Applications and Design Considerations
The STL3NK40 finds its natural habitat in various power electronics applications where reliability and efficiency are paramount. Its specifications make it particularly well-suited for:
- Industrial power supply units
- Motor drive inverters
- Renewable energy systems
- High-voltage DC-DC converters
- Industrial automation equipment
When implementing this MOSFET in circuit designs, engineers should consider its 10V drive voltage requirement for optimal Rds(on) performance. Proper gate drive circuitry and thermal vias in the PCB layout will help maximize the device's performance potential. The SuperMESH™ technology incorporated in this device ensures reduced tail current during switching transitions, contributing to improved overall system efficiency.
Tags: Power Electronics, MOSFET Transistors, Industrial Semiconductors, Surface Mount Devices, High Voltage ICs