A semiconductor can be considered a material having a conductivity ranging between that of an insulator and a metal. Semiconductor SEMI members are responsible for the dramatic cost reductions and performance improvements. Semiconductors are the middle ground between conductors and insulators and are made from silicon that is doped from different impurities to make it a suitable semiconductor. ON Semiconductor offers a comprehensive portfolio of innovative energy efficient power and signal management, logic, discrete, and custom semiconductor . Neither a conductor nor an insulator, N- and p-type semiconductors, Transistor: a device for amplifying electric current, TA widely known semiconductor is silicon. Electronic components using semiconductors are called semiconductor devices, including the IC that is integrated circuit. Semiconductors are used because we can easily control the current generated by flow of electrons and holes through them(for basic level). On this concept, basic electronic devices like diode, transistor are developed using semiconductors for switching and amplifying activities