JANSF2N2221AUB

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

Introduction

The JANSF2N2221AUB is a single-type bipolar junction transistor (BJT). It is an NPN silicon controlled switch associated with a JEDEC TO-92 package. It has excellent transfer response, low output capacitance and low on-resistance. By applying the appropriate biases, the JANSF2N2221AUB can be used for multiple devices, including power switching and amplifiers.

Application

The JANSF2N2221AUB is a wide-ranging device, and is suitable for both low and high voltage applications. It is popularly used in linear and switching applications, power switching and audio amplifiers.

• Switch Applications: It is suitable for use in transistor switching circuits, due to its low on-state resistance and high current gain.
• Amplifier Applications: The JANSF2N2221AUB is capable of providing high power audio amplifier performance, making it an ideal choice for sound reinforcement systems, musical instruments, and broadcast systems.
• Power Switching Applications: The fast switching time and low output capacitance of the JANSF2N2221AUB makes it suitable for use in high speed power switching applications.

Working Principle

The JANSF2N2221AUB can be classified as a NPN type bipolar transistor. It works by applying an integrated base-emitter voltage (Vbe) to the input that turns the current flow on between the collector and the emitter. In other words, a negative voltage on the base turns the transistor on, while the opposite turns it off. When a voltage is applied between the base and emitter, the current flowing through the base-emitter junction splits in two. The left portion enters the base and the right portion flows between collector-emitter junctions. The current gain of the transistor is defined as the ratio of the output current (collector current) over the input current (base current). As the base current increases, the collector current increases by the same proportion. Once the transistor is turned on, the current gain can be kept constant until a saturation voltage is reached and then the transistor is in a “saturated” condition (fully on). The reverse of this is called “cutoff”. This occurs when the voltage applied between the base and the emitter is below a certain threshold value and very little collector current is delivered in this state. In other words, once the voltage between the base and the emitter drops below the cut-off voltage, the transistor is in an “off” state.

Conclusion

The JANSF2N2221AUB is a single-type bipolar junction transistor (BJT) that is suitable for use in low and high voltage applications. It has excellent transfer response, low output capacitance and low on-resistance. It is commonly used in linear and switching applications, power switching and audio amplifiers. It works by applying a voltage between the base and emitter, which controls the current flow between the collector and the emitter. The current gain of the JANSF2N2221AUB is defined as the ratio of the output current over the input current. When the voltage applied between the base and the emitter is below a certain threshold value, the transistor is in an “off” state.

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