STMicroelectronics BUF420M High Voltage Fast-Switching NPN Power Transistor

The BUF420M is a high voltage, fast-switching NPN bipolar power transistor designed and manufactured by STMicroelectronics. This device is particularly suitable for high-definition CRT displays, switching power supplies, and lighting applications, where it provides exceptional performance in terms of speed and energy efficiency.

Key Features

• Voltage Capabilities: The BUF420M is capable of withstanding high voltages, with a collector-emitter voltage (Vceo) rated at 450V, ensuring reliability in demanding electrical environments.
• Current Handling: It can handle continuous collector currents up to 20A, making it suitable for high-power applications.
• Speed: With a fast-switching speed, this transistor is designed for applications requiring high-speed operation, contributing to the efficiency of the overall system.
• Saturation Voltage: The device has a low collector-emitter saturation voltage, which helps to reduce power losses and improve efficiency.
• Power Dissipation: It offers a high power dissipation capability of up to 125W, allowing it to handle significant levels of power without overheating.

Applications

• High-Definition CRT Displays
• Switching Power Supplies
• Lighting Circuits
• Electronic Ballasts
• Motor Control

Package and Mounting

The BUF420M comes in an ISOWATT218 package, which is designed for optimal thermal performance and compactness. The mounting process is streamlined thanks to the package's design, which is intended for through-hole mounting, providing a robust mechanical attachment to the PCB.

Quality and Reliability

STMicroelectronics is known for its commitment to quality and reliability, and the BUF420M is no exception. It is manufactured to meet high standards, ensuring stable performance over its intended lifespan. Whether used in industrial or consumer applications, the BUF420M is a reliable choice for designers seeking a high-voltage, fast-switching solution.

For detailed specifications and application notes, designers and engineers are encouraged to consult the official datasheets and support documentation provided by STMicroelectronics.