The fundamental building blocks of electronic systems are physical devices like resistors, capacitors, transistors, and integrated circuits that control the flow of electrons or electric fields to perform specific functions
BD139 Transistor Pinout,Features,Alternate
BD139 transistor is a popular NPN type used in variety of electronic circuits. It is an ideal transistor due to its high collector current and low cost. Due to these features it is used in educational electronics projects as well {Read More}
