2N5457G Transistor

Product Overview

The 2N5457G is a small-signal N-channel JFET (Junction Field-Effect Transistor) designed for general-purpose amplifier and switching applications. This transistor falls under the category of electronic components and is commonly used in audio amplifiers, instrumentation circuits, and voltage-controlled devices. The 2N5457G is characterized by its high input impedance, low noise, and low distortion, making it suitable for various low-power applications. It is typically available in TO-92 packaging and is sold in quantities of multiples of one.

Specifications

• Type: N-channel JFET
• Maximum Power Dissipation: 350 mW
• Drain-Source Voltage (Vds): 25 V
• Gate-Source Voltage (Vgs): ± 25 V
• Drain Current (Id): 10 mA
• Input Capacitance (Ciss): 6 pF
• Transconductance (gm): 4000 µS

Pin Configuration

The 2N5457G transistor has three pins: 1. Gate (G): Input terminal 2. Drain (D): Output terminal 3. Source (S): Common terminal

Functional Features

• High input impedance
• Low noise
• Low distortion
• Wide dynamic range

Advantages

• Suitable for low-power applications
• Versatile usage in audio amplifiers and instrumentation circuits
• High transconductance

Disadvantages

• Limited maximum power dissipation
• Relatively low drain-source voltage rating

Working Principles

The 2N5457G operates based on the field effect principle, where the flow of current between the source and drain terminals is controlled by the voltage applied to the gate terminal. This allows for voltage-controlled amplification and signal switching.

Application Field Plans

The 2N5457G finds extensive use in the following application fields: - Audio Amplifiers: Due to its low noise and low distortion characteristics, the transistor is widely employed in audio amplifier circuits. - Instrumentation Circuits: Its high input impedance makes it suitable for use in measurement and control systems. - Voltage-Controlled Devices: The transistor's voltage-controlled nature enables its use in various voltage-controlled devices such as oscillators and filters.

Alternative Models

Some alternative models to the 2N5457G include: - J201 - MPF102 - BF245A

In conclusion, the 2N5457G transistor is a versatile component with a wide range of applications in low-power electronic circuits, particularly in audio amplifiers and instrumentation systems.

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