2N3820 Transistor

Product Overview

The 2N3820 is a type of transistor that falls under the category of small signal transistors. It is commonly used for amplification and switching purposes in electronic circuits. The transistor exhibits characteristics such as high gain, low noise, and low power consumption. It is typically packaged in a TO-92 package and is available in both through-hole and surface mount configurations. The essence of the 2N3820 lies in its ability to amplify weak signals and act as a switch in electronic devices. It is usually sold in reels or tubes containing a specific quantity per package.

Specifications

• Type: NPN
• Maximum Power Dissipation: 350mW
• Collector-Base Voltage (Vcbo): 40V
• Collector-Emitter Voltage (Vceo): 25V
• Emitter-Base Voltage (Vebo): 5V
• Collector Current (Ic): 200mA
• DC Current Gain (hfe): 100 - 300
• Transition Frequency (ft): 250MHz

Detailed Pin Configuration

The 2N3820 transistor has three pins: the collector (C), base (B), and emitter (E). In the TO-92 package, the pin configuration is as follows: - Collector (C) - Pin 1 - Base (B) - Pin 2 - Emitter (E) - Pin 3

Functional Features

The 2N3820 transistor offers high gain, making it suitable for amplifying weak signals in various electronic applications. It also exhibits low noise characteristics, which is beneficial in audio amplifier circuits. Additionally, its low power consumption makes it ideal for battery-operated devices.

Advantages and Disadvantages

Advantages

• High gain
• Low noise
• Low power consumption
• Versatile applications

Disadvantages

• Limited maximum power dissipation
• Moderate transition frequency

Working Principles

When used as an amplifier, the 2N3820 transistor operates by controlling the current flow between the collector and emitter terminals based on the input signal at the base terminal. As a switch, it can be turned on or off by applying a small current or voltage to the base terminal, allowing or blocking the flow of current between the collector and emitter.

Detailed Application Field Plans

The 2N3820 transistor finds extensive use in various electronic applications, including: - Audio amplifiers - Signal amplification circuits - Switching circuits - Oscillator circuits - Voltage regulators

Detailed and Complete Alternative Models

Some alternative models to the 2N3820 transistor include: - 2N3904 - BC547 - 2N2222 - 2N4401 - 2N3906

In summary, the 2N3820 transistor is a versatile component with applications in amplification and switching circuits. Its high gain, low noise, and low power consumption make it a popular choice for various electronic designs.

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