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 c … [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...]

The MJE13005 is a high-voltage & high-speed power transistor that belongs to the family of NPN transistors. The MJE13005 transistor is a semiconductor device that is made up of silicon (Si) material. This transistor is a current-controlled device that includes three terminals; an emitter, base, and collector. This transistor supports loads up to 4A & the voltage from the emitter base is 9V which is the necessary voltage for transistor action. This article provides brief information on … [Read more...]

Darlington pair is a multi-transistor or Darlington configuration in electronics which includes two BJTs like PNP or NPN. This transistor is named after its inventor name “Sidney Darlington”. It is a special arrangement of two PNP/NPN standard BJTs connected together. The emitter terminal of one transistor is connected to the base terminal of the other transistor so that the flow of current can be amplified through the primary transistor and further, it is amplified by the secondary transistor. I … [Read more...]