JANTX2N4857

Product Overview

Category

The JANTX2N4857 belongs to the category of small-signal transistors.

Use

It is commonly used for amplification and switching of electronic signals in various applications.

Characteristics

• Low power dissipation
• High current gain
• Low noise
• High voltage capability

Package

The JANTX2N4857 is typically available in a TO-92 package.

Essence

This transistor is essential for signal amplification and switching in electronic circuits.

Packaging/Quantity

It is usually packaged in reels or tubes, with quantities varying based on supplier and customer requirements.

Specifications

• Maximum Power Dissipation: 350 mW
• Collector-Base Voltage (Vcbo): 30 V
• Collector-Emitter Voltage (Vceo): 30 V
• Emitter-Base Voltage (Vbe): 5 V
• Collector Current (Ic): 100 mA
• DC Current Gain (hfe): 100 - 300
• Transition Frequency (ft): 100 MHz

Detailed Pin Configuration

The JANTX2N4857 has three pins: 1. Base (B) 2. Emitter (E) 3. Collector (C)

Functional Features

• Amplification of small electronic signals
• Switching of electronic signals

Advantages

• Low power dissipation
• High current gain
• Low noise

Disadvantages

• Limited maximum voltage and current ratings compared to power transistors
• Relatively low transition frequency

Working Principles

The JANTX2N4857 operates based on the principles of bipolar junction transistors, where the flow of current between the collector and emitter is controlled by the current at the base terminal.

Detailed Application Field Plans

The JANTX2N4857 is widely used in the following applications: - Audio amplifiers - Signal processing circuits - Switching circuits - Oscillator circuits

Detailed and Complete Alternative Models

Some alternative models to the JANTX2N4857 include: - 2N2222 - BC547 - 2N3904 - BC548

In conclusion, the JANTX2N4857 small-signal transistor is a versatile component with applications in various electronic circuits, offering advantages such as low power dissipation and high current gain. However, it is important to consider its limitations, such as relatively low maximum voltage and current ratings, when selecting it for specific designs. Additionally, there are several alternative models available that can be considered based on specific application requirements.