The BC547 is a general purpose NPN bi-polar junction transistor manufactured by Continental Device India Limited (CDIL). It features low noise and low power consumption, making it ideal for signal amplification, switching, and signal modulation applications. It has a collector-emitter voltage of 45V, a collector current of 1.5A, and a gain band width of 625MHz. This little blue transistor is also highly reliable, with a failure rate of less than 50ppm (parts per million). The maximum power dissipation of the BC547 is 800mW, making it suitable for a variety of applications.