STMicroelectronics Transistor NPN 3 A, 80 V, Through Hole SOT-32 Package BD139

STMicroelectronics BD139 is a reliable NPN transistor designed for general purpose electronic applications requiring moderate power and voltage ratings. It supports a maximum collector current of 3 amperes and a collector-emitter voltage of 80 volts. Packaged in a 3-pin Through Hole SOT-32 form factor, this transistor facilitates easy integration into printed circuit boards, especially suitable for industrial, laboratory, and automotive electronics projects.

The transistor offers a minimum current gain (hFE) of 25 and maximum power dissipation of 1.25 watts, providing a balance between performance and thermal stability. Its maximum emitter-base voltage is 5 volts with a collector-base voltage of 80 volts, ensuring robust electrical reliability. The device is rated to operate safely up to 150°C, making it suitable for high-temperature applications in manufacturing and test environments.

The physical dimensions of the BD139 transistor are length 27.05 mm, width 7.8 mm, and height 2.9 mm, making it compact and easy to handle during assembly. The product complies with no specific standards or automotive certifications but is well recognized for its wide usability in discrete semiconductor electronic components.

General purpose bipolar transistor suitable for amplification and switching applications. Maximum DC collector current of 3 amperes ensures handling of medium power loads. Maximum collector-emitter voltage rating of 80 volts allows reliable high voltage operation.

Package type is Through Hole SOT-32 with 3 pins for easy PCB mounting. Minimum DC current gain (hFE) of 25 supports moderate gain amplification. Maximum power dissipation of 1.25 watts allows stable performance under typical workloads.

Transistor configuration is single NPN polarity designed for a wide range of electronics circuits. Operating temperature limit up to 150°C ensures durability in demanding environments. Compact physical size with length 27.05mm, width 7.8mm, and height 2.9mm.

Ideal for industrial, laboratory, construction, HVAC, manufacturing, and electronic equipment design applications. Explore more Bipolar Transistors and semiconductors in the EnvMart catalog to meet your component requirements.