Biggest to smallest is the actual name of development. Darlington Transistors has revolutionized the field of electronics. Small in size and high potentialities are special cause of its liking. This transistor device is efficient, reliable and suits the budget of the customers. The application of Darlington transistors has brought about a great change in the field of computers, phones and television. For voltage regulation, amplification and for more other applications this electronic transistor is highly used. Due to its inception, the whole electronic industry got the slim-look. The arena of information as well as the ambit of entertainment has not been left behind as darlington transistors reign these fields. For different type of operations varied type and size of transistors are available in the market to meet the demand of the customers.