STD7NK40ZT4 N-Channel MOSFET 400V 5.4A DPAK Package
- Brand: STMicroelectronics
- Product Code: STD7NK40ZT4
- Availability: In Stock
$0.38
- Ex Tax: $0.38
Introducing the High-Performance STD7NK40ZT4 N-Channel MOSFET
STMicroelectronics' STD7NK40ZT4 is a cutting-edge N-Channel power MOSFET designed for high-voltage applications requiring exceptional reliability and efficiency. Engineered with advanced SuperMESH™ technology, this 400V, 5.4A transistor delivers optimal performance in industrial, automotive, and consumer electronics systems where space constraints and thermal management are critical. Whether you're developing power supplies, motor controls, or switching circuits, the DPAK-packaged STD7NK40ZT4 combines robust electrical characteristics with surface-mount convenience for modern PCB designs.
Key Technical Advantages
Operating at the intersection of power density and energy efficiency, this transistor features a remarkable 1Ω Rds(on) @ 2.7A, 10V gate drive. Its optimized gate charge (26nC @ 10V) enables fast switching performance while maintaining low conduction losses. The ±30V gate voltage tolerance provides design flexibility, while the 535pF input capacitance ensures stable operation in high-frequency environments. With a maximum power dissipation rating of 70W (Tc), this device excels in thermally demanding applications.
| Parameter | Specification |
|---|---|
| Drain-Source Voltage | 400V |
| Continuous Drain Current | 5.4A |
| Rds(on) Max | 1Ω @ 10V Vgs |
| Gate Charge | 26nC |
| Operating Temperature | -55°C to 150°C |
Design Versatility
The DPAK (TO-252-3) surface-mount package bridges the gap between through-hole robustness and SMT space savings. This makes the STD7NK40ZT4 ideal for applications like LED lighting systems, battery management circuits, and industrial automation equipment. Its 4.5V gate threshold voltage (at 50µA) ensures compatibility with standard logic drivers while maintaining excellent switching characteristics across varying load conditions.
Engineers will appreciate the device's inherent avalanche energy rating and built-in thermal protection features that enhance system robustness. The transistor's RoHS compliance and halogen-free construction align with modern environmental regulations, making it suitable for eco-conscious designs. When paired with STMicroelectronics' extensive ecosystem of power management ICs, the STD7NK40ZT4 becomes a cornerstone component in creating intelligent power systems.
Performance in Real-World Applications
In practical implementations, this MOSFET demonstrates exceptional performance across multiple domains. For power supply designers, its low on-resistance reduces conduction losses in DC-DC converters and SMPS units. Motor control applications benefit from the device's ability to handle repetitive avalanche events during inductive load switching. The transistor's fast switching characteristics also make it suitable for high-frequency inverter circuits in renewable energy systems.
Thermal management is simplified through the DPAK package's enhanced heat dissipation capabilities. When mounted on a standard 1oz copper PCB with 2oz copper traces, the device maintains stable operation even under continuous 70W power dissipation. This thermal efficiency extends component lifespan and improves overall system reliability in harsh operating environments.
Tags: Power Electronics, MOSFET Transistors, High-Voltage FETs, Surface Mount Devices