Introduction to BD139 12 - Apr - 2019 zahidali Electronic Components 0 Comments 63.8K Views <img src="https://images.theengineeringprojects.com/image/main/2019/03/INTRDUCTION-BD139.jpg" alt="Introduction BD139, BD139 pinout, BD139 applications, BD139 as a switch, BD139 as amplifier, BD139 arduino interfacing, BD139" class="alignCenter" width="300" height="175" srcset="https://images.theengineeringprojects.com/image/300/2019/03/INTRDUCTION-BD139.jpg 300w, https://images.theengineeringprojects.com/image/600/2019/03/INTRDUCTION-BD139.jpg 600w" sizes="(max-width: 300px) 100vw, 300px" decoding="async" loading="lazy" onclick="openImage( ... Introduction BD139 BD139 pinout BD139 applications BD139 as a switch BD139 as amplifier BD139 arduino interfacing BD139 Read More