STMicroelectronics

BUL381D

BUL381D Description

The BUL381D is a high-performance NPN transistor from STMicroelectronics, designed for demanding applications that require high power and voltage handling. With an operating temperature of 150°C (TJ) and a maximum collector current of 5 A, this device offers excellent performance in a variety of electronic systems. The BUL381D features a low saturation voltage of 1.1V at 750mA and 3A, ensuring efficient operation in power management circuits. Its maximum power rating of 70W and collector-emitter breakdown voltage of 400V make it suitable for high-voltage, high-power applications.

BUL381D Features

• NPN transistor type for high current and power handling
• 150°C (TJ) operating temperature for reliable performance in harsh environments
• 5 A maximum collector current for high-power applications
• Low saturation voltage of 1.1V at 750mA and 3A for efficient power management
• 400V collector-emitter breakdown voltage for high-voltage applications
• 70W maximum power rating for demanding electronic systems
• Through-hole mounting type for easy integration into existing designs
• Tube packaging for protection and ease of handling
• RoHS3 compliant for environmentally friendly manufacturing
• REACH unaffected status for compliance with European chemical regulations
• Moisture sensitivity level 1 (unlimited) for reliable performance in humid environments

BUL381D Applications

The BUL381D is ideal for a wide range of applications that require high power and voltage handling, including:

1. Power amplifiers and switching circuits
2. Motor control and drive systems
3. High-voltage power supplies and converters
4. Automotive electronics, such as ignition systems and lighting
5. Industrial control systems and automation equipment
6. Audio and video amplifiers

Conclusion of BUL381D

The BUL381D is a versatile and powerful NPN transistor that offers excellent performance in high-power, high-voltage applications. Its unique combination of high current and power handling, low saturation voltage, and robust temperature and voltage ratings make it an ideal choice for demanding electronic systems. While it is now considered obsolete, the BUL381D remains a reliable and efficient solution for applications that require its specific performance characteristics.