LM395T

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

Bipolar junction transistors (BJTs) are a type of active semiconductor device. They consist of three terminals, the Base, Collector, and Emitter. When the proper input signal is applied, the BJT acts like a current amplifier, providing gain, voltage gain, and current control. Among the various types of BJTs, single transistors such as the LM395T are commonly used in a variety of circuits. This article will explain the application fields and working principle of the LM395T transistor.

Applications

The LM395T transistor is commonly used as a switch and for low current amplification. Its relatively low power rating and linear current gain make it suitable for a wide range of applications, including:

• Regulating the current of a motor or motor control circuit
• Replacing relays in low current switching applications such as fan control
• Controlling small lighting and monitoring circuits
• Forming small discrete logic devices for interfacing digital systems with analog devices

Working Principle

The LM395T is a n-p-n bipolar junction transistor (BJT). A BJT consists of three terminals: the Base, Collector, and Emitter. When a small current is applied to the Base terminal, it allows a larger current to flow between the Collector and Emitter. This is the current amplification effect of the BJT. The amount of current amplification is determined by the current gain of the transistor, which is represented by the hFE parameter.

The amount of current flowing through the Collector-Emitter terminals can be controlled by varying the Base current. This current is called the bias current and it determines the operating point (Q-point) of the BJT. The bias current can be controlled by using external resistors or by using an external current source.

The LM395T has a low voltage rating, so it is not suitable for use as a power switch. However, its low voltage rating and low current gain makes it ideal for low power switching applications, such as motor or fan control. It is also relatively inexpensive, making it an attractive choice for many applications.

Conclusion

The LM395T is a single n-p-n bipolar junction transistor that is used for low current amplification and low power switching applications. It has a low voltage rating and current gain, making it well suited for use in small circuits. By controlling the bias current, the transistor can be used to regulate the current of small motors or to form discrete logic devices for interfacing analog and digital systems.

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