BC639 is a BJT with high current gain and this transistor belongs to the NPN transistor family. This transistor is an extremely adaptable device, used to switch fairly high voltage devices which normally use 60V to 120V DC. This transistor uses a TO-92 package and is the most common type of transistor package mainly utilized in low-power devices. This package is made up of plastic or epoxy material because these materials are less weight and also have high heat resistance properties. This … [Read more...]

There are different types of Power Transistors from TIP series like; TIP41 (NPN), TIP31(NPN), TIP42 (PNP), TIP2955 (PNP). TIP122 (NPN), TIP127 (PNP). The term TIP stands for “Texas Instruments Power” and is a series of BJTs manufactured by Texas Instruments. This series was launched in the 1960s and is still used today because of its durability, simplicity & simple use. This article provides brief information on one of the TIP series transistors namely; the TIP127 Darlington transistor, pin … [Read more...]

The low-power and general-purpose NPN silicon BJTs like; BC109, BC107, and BC108 are frequently found in most electronic devices and equipment. These transistors were produced by Philips & Mullard Ltd in the year 1963 & launched in April 1966. At first, the range of these transistors is expanded ultimately in TO-18 metal packages to include other types of packages, high voltage ratings, better gain groupings selection & complementary PNP types. Some electronics manufacturers have … [Read more...]