Symond
Symond Content Marketer
On Dec 9, 2025


The Darlington Transistors BD679 by STMicroelectronics are high-current gain bipolar devices designed for applications requiring efficient switching and amplification. As part of Semiconductors, Discrete Semiconductors, Transistors, and Darlington Transistors, the BD679 delivers reliable performance in industrial, automotive, and power control circuits.

With its Darlington configuration, the BD679 offers high current gain, making it suitable for driving loads such as relays, motors, and solenoids while minimizing base current requirements.


  • Manufacturer: STMicroelectronics

  • Part Number: BD679

  • Product Category: Semiconductors, Discrete Semiconductors

  • Transistor Type: Darlington Transistors

  • Polarity: NPN

  • Collector-Emitter Voltage (Vce): 100V (typical)

  • Collector Current (Ic): Up to 4A

  • DC Current Gain (hFE): Very high (Darlington pair)

  • Package Type: TO-126

  • Mounting Type: Through Hole


  • High current gain Darlington configuration

  • Capable of driving high-current loads

  • Reliable thermal and electrical stability

  • Easy interfacing with control logic

  • Robust construction by STMicroelectronics

  • Ideal for Darlington Transistors applications

  • Trusted choice in Semiconductors and Discrete Semiconductors


The BD679 Darlington Transistors are widely used in:

  • Relay and solenoid drivers

  • Motor control circuits

  • Power switching applications

  • Industrial automation systems

  • Audio and signal amplification

  • Embedded designs using Transistors

  • Circuits requiring high-gain Darlington Transistors


  • Use appropriate heat sinking for high-current operation

  • Ensure correct base resistor selection

  • Suitable for microcontroller and logic-level driving

  • Optimized for designs using Discrete Semiconductors


In an industrial control system, the BD679 Darlington Transistors by STMicroelectronics are used to drive electromagnetic relays. The high current gain reduces control circuitry complexity while ensuring dependable switching, making it a preferred choice among Transistors and Darlington Transistors.


Download BD679 Darlington Transistors Datasheet
Available upon request with complete electrical characteristics and thermal data.



When you purchase BD679 Darlington Transistors by STMicroelectronics from www.xonelec.com, you benefit from:

  • Guaranteed genuine components

  • Competitive global pricing

  • Fast shipping to USA, India, Australia, Europe & other countries

  • Wide stock of Semiconductors, Transistors, and Darlington Transistors

  • Trusted service from x-on electronics



The BD679 Darlington Transistors by STMicroelectronics offer high current gain, robust performance, and proven reliability for power switching and amplification applications. As a dependable part of Semiconductors, Discrete Semiconductors, Transistors, and Darlington Transistors, BD679 is an excellent choice for industrial and embedded designs.


View All Tags

Looking for help? Visit our FAQ's Section to answer to all your questions

 

X-ON Worldwide Electronics

Welcome To X-ON Electronics
For over three decades, we have been advocating and shaping the electronic components industry. Our management complements our worldwide business scope and focus. We are committed to innovation, backed by a strong business foundation. If you need a trustworthy supplier of electronic components for your business – look no further.
 

Copyright ©2026  X-ON Electronics Services. All rights reserved.
Please ensure you have read and understood our Terms & Conditions before purchasing. All prices exclude GST.

Image for all the cards that are accepted Image for all the cards that are accepted Image for all the cards that are accepted Image for all the cards that are accepted Image for all the cards that are accepted AS9120 Certified