CDIL TRANSISTOR The BC547B is a small-signal NPN bipolar junction transistor (BJT) manufactured by CDIL (Continental Device India Limited). It is commonly used in electronic circuits for various applications, including amplification and switching. With its three terminals - collector, base, and emitter - the BC547B transistor can amplify small electrical signals and control larger currents or voltage levels. It is known for its reliability and versatility, making it a popular choice among hobbyists and electronics enthusiasts for a wide range of low-to-medium power electronic projects.