STMicroelectronics BUL138FP High Voltage Fast-Switching NPN Power Transistor

The BUL138FP from STMicroelectronics is a robust and high-performance NPN power transistor designed for a wide range of applications requiring high voltage capability and fast switching speeds. This versatile component is ideal for use in electronic ballasts, switch-mode power supplies, motor control circuits, and various other power conversion and management applications.

Key Features

• High Voltage Capability: The BUL138FP is engineered to handle high voltage operations, with a collector-emitter voltage (V<sub>CEO) of up to 400V, making it suitable for circuits that operate at higher voltages.
• Fast Switching Speed: With a fast switching response, this transistor is capable of operating at high frequencies, which is essential for efficient power conversion and reducing switching losses.
• High Current Rating: The device can handle a continuous collector current (I<sub>C) up to 4A, allowing it to drive a significant amount of power for various applications.
• Low Saturation Voltage: The BUL138FP has a low collector-emitter saturation voltage (V<sub>CE(sat)), which contributes to its efficiency by minimizing power dissipation during operation.

Package and Mounting

The BUL138FP comes in a fully isolated TO-220FP plastic package, which not only ensures ease of mounting on a printed circuit board (PCB) but also offers excellent thermal performance and electrical isolation. This package is designed to facilitate effective heat dissipation, thereby supporting the reliability and longevity of the device.

Applications

Thanks to its high voltage and fast-switching capabilities, the BUL138FP is an excellent choice for the following applications:

• Electronic Ballasts for Fluorescent Lighting
• Switch-Mode Power Supplies (SMPS)
• DC-DC Converters
• Motor Control Circuits
• Power Inverter Circuits
• Charging Systems

With its combination of high performance, reliability, and versatility, the BUL138FP from STMicroelectronics is a valuable component for designers and engineers looking to enhance the efficiency and robustness of their high-voltage power applications.