MPSA20

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Single bipolar transistors (BJT) are used in a variety of technological applications. Among the most popular types of transistors is the MPSA20, which is particular popular thanks to its ease of use and availability. Here we will outline the application field and working principle of the MPSA20 transistor.

Application Field

The MPSA20 bipolar transistor is mainly used for analog and digital signal switching and amplification. In addition, it is also used in application field like power relay amplifiers, domestic appliance control, automatic control, and timer circuits. The transistor is also used in the fields of data communications, switching of audio amplifiers, and computer logic circuits.

Working Principle

The MPSA20 transistor is a three-terminal device consisting of an emitter, a base and a collector. Current flows from the emitter to the collector when the voltage applied to the base is high enough. This is known as the forward current, or the linear region. When the voltage is reversed, the collector–base current decreases, known as the cut-off region. When the voltage is slightly high, the transistor is in the saturation region.

The operation of the MPSA20 can be understood in terms of two currents. The first is called the collector current and is the result of the amount of electrons, called the minority carriers, entering the transistor from the base. This current, referred to as the saturation current, is usually constant and small. The second current is the base current which is the result of a current of electrons and holes flowing out of the emitter. This current is called the forward current, since it is responsible for the forward bias of the transistor.

In summary, the MPSA20 is a single bipolar transistor which has a wide range of applications in technological fields. It is composed of an emitter, a collector and a base and operates on the principle of current flow caused by the minority carriers and the current of electrons and holes flowing out of the emitter.

The specific data is subject to PDF, and the above content is for reference