STGB25N40LZAG

STGB25N40LZAG is a high-performance N-channel power MOSFET manufactured by STMicroelectronics, designed for efficient switching applications in power conversion and management systems. It features a maximum drain-source voltage (VDS) of 400 V, allowing it to handle high-voltage circuits commonly found in industrial and consumer electronics. The device has a continuous drain current (ID) of 25 A at 25°C junction temperature, making it suitable for moderate to high-power loads without thermal derating under normal operating conditions. The MOSFET exhibits low on-resistance (RDS(on) = 0.13 Ω at VGS = 10 V), which minimizes conduction losses and improves system efficiency—especially critical in energy-sensitive applications like DC-DC converters, motor drives, and power supplies. Its optimized gate charge (QG = 67 nC typ.) enables fast switching speeds, reducing switching losses and supporting high-frequency operation up to several hundred kHz, ideal for modern switch-mode power supplies (SMPS). This device is packaged in a TO-220-3L form factor, offering robust mechanical stability and reliable thermal performance through direct mounting on heatsinks. It includes a built-in anti-parallel diode that simplifies circuit design in inductive load applications such as buck converters or H-bridge motor drivers. The integrated body diode ensures safe commutation during switching transitions, eliminating the need for an external flyback diode in many cases. Designed with advanced trench technology, the STGB25N40LZAG delivers excellent thermal characteristics and high avalanche energy capability, enhancing reliability under transient overvoltage conditions. It also supports both logic-level and standard gate drive voltages, providing flexibility in control circuit integration. The device complies with RoHS standards and is suitable for environmentally conscious designs across various industries. Common applications include offline power supplies, battery-powered tools, LED lighting drivers, solar inverters, and industrial automation equipment where high efficiency, compact size, and long-term reliability are essential. Its combination of high voltage tolerance, low conduction loss, and robust protection features makes it a preferred choice for engineers seeking cost-effective yet high-performance solutions in power electronics.