STMicroelectronics STD5NK40ZT4 SuperMESH™ N-Channel MOSFET 400V 3A DPAK - Active

High-Performance Power Management with STMicroelectronics STD5NK40ZT4 MOSFET

The STMicroelectronics STD5NK40ZT4 SuperMESH™ N-Channel MOSFET represents a significant advancement in power electronics technology, offering engineers and designers a robust solution for demanding applications. This cutting-edge component combines ST's proprietary SuperMESH™ technology with optimized electrical characteristics to deliver superior performance in power conversion, motor control, and industrial systems.

Key Technical Advantages

Engineered for reliability and efficiency, this 400V N-Channel MOSFET features a remarkably low Rds(on) of just 1.8Ω when operating at 1.5A and 10V gate drive. Its advanced silicon design minimizes conduction losses while maintaining exceptional thermal stability, with a maximum power dissipation of 45W at case temperature. The device's ±30V gate voltage rating provides enhanced operational flexibility, while its 17nC gate charge at 10V ensures fast switching performance.

Design & Packaging Excellence

Housed in a compact DPAK (TO-252-3) surface mount package, this MOSFET offers optimal space utilization while maintaining excellent thermal dissipation characteristics. The ruggedized design supports operating temperatures from -55°C to 150°C, making it suitable for both industrial and automotive environments. Its RoHS-compliant construction ensures environmental compliance without compromising performance.

Engineers will appreciate the device's consistent electrical characteristics across production batches, with tight parameter tolerances that simplify design verification. The integrated SuperMESH™ structure delivers breakthrough performance in avalanche energy handling, enhancing system reliability under challenging load conditions.

Application Versatility

This versatile MOSFET excels in a wide range of power management applications including:

• Switch-mode power supplies (SMPS)
• Motor drive inverters
• Industrial automation systems
• Renewable energy converters
• High-voltage DC-DC converters

Its combination of high breakdown voltage and controlled switching characteristics makes it particularly well-suited for power factor correction circuits and resonant converter topologies. The device's low gate charge and fast recovery characteristics enable efficient operation at frequencies up to several hundred kHz.

Reliability & Compliance

Manufactured under STMicroelectronics' stringent quality management system, the STD5NK40ZT4 meets all major industry standards including JEDEC qualification requirements. The device is specified for operation in harsh environments, with robust resistance to thermal cycling and mechanical stress. Its tape-and-reel packaging format ensures compatibility with automated PCB assembly processes while maintaining component integrity during handling.

As part of ST's SuperMESH™ family, this MOSFET benefits from continuous process improvements that enhance performance metrics while maintaining backward compatibility with existing designs. Designers can leverage this device to achieve higher power density, improved system efficiency, and reduced component count in their power electronics solutions.

Tags: Power Electronics, Voltage Regulation, Industrial Automation, Motor Control, Surface Mount Technology