The BU408 is a high voltage NPN bipolar junction transistor (BJT) designed and manufactured by ON Semiconductor. This transistor is particularly suitable for applications requiring high voltage capabilities and is widely used in power switching circuits, series regulators, and high fidelity amplifiers.

Key Features:

• Voltage Capabilities: The BU408 is designed to handle high voltage operations, with a Collector-Emitter voltage (V<sub>CEO) of 200V, which makes it ideal for use in high voltage power supplies and other circuits where voltage demands are significant.
• Current Handling: With a Collector current (I<sub>C) of up to 7A, this transistor can manage considerable current loads, making it a robust choice for power amplification and switching applications.
• Power Dissipation: The device has a power dissipation rating of 80W, providing it with the capability to handle significant levels of power without overheating, thereby ensuring reliable operation in demanding situations.
• Speed: It offers decent switching speeds, which is a critical factor in applications where fast switching is required to maintain efficiency and performance.

Applications:

The BU408 transistor is versatile and can be used in a variety of electronic circuits. It is commonly employed in:

• Switching regulators
• Power amplifiers
• Horizontal deflection circuits in CRT monitors and TVs
• High fidelity audio amplifiers
• Motor control circuits

Quality and Reliability:

ON Semiconductor is known for its commitment to quality, and the BU408 is no exception. It is built to meet stringent requirements, ensuring a reliable performance even under challenging conditions. The device is also RoHS compliant, adhering to current environmental standards and regulations.

Whether you are designing a power supply, constructing an audio amplifier, or developing a motor control system, the BU408 from ON Semiconductor is a component that offers the performance, reliability, and quality that engineers and hobbyists alike have come to expect from a leading semiconductor manufacturer.