2N4401TA Transistor

Product Overview

The 2N4401TA is a general-purpose NPN bipolar junction transistor (BJT) commonly used in electronic circuits for amplification and switching purposes. This transistor belongs to the category of discrete semiconductor components and is widely utilized in various applications due to its versatile characteristics.

Basic Information Overview

• Category: Discrete Semiconductor Component
• Use: Amplification and Switching
• Characteristics: High voltage capability, low leakage current, and high current gain
• Package: TO-92
• Essence: Small-signal amplifier
• Packaging/Quantity: Typically available in reels or tubes containing multiple units

Specifications

• Maximum Collector-Base Voltage (V_CB): 60V
• Maximum Collector-Emitter Voltage (V_CE): 40V
• Maximum Emitter-Base Voltage (V_EB): 6V
• Continuous Collector Current (I_C): 600mA
• Power Dissipation (P_D): 625mW
• Transition Frequency (f_T): 250MHz

Detailed Pin Configuration

The 2N4401TA transistor has three pins: 1. Collector (C): Connected to the positive supply voltage in most applications. 2. Base (B): The input terminal that controls the flow of current between the collector and emitter. 3. Emitter (E): The output terminal through which the amplified or switched current flows out of the transistor.

Functional Features

• High current gain (h_FE) makes it suitable for amplification purposes.
• Low saturation voltage enables efficient switching operations.
• Fast switching speed allows for rapid on/off transitions.

Advantages and Disadvantages

Advantages

• Versatile application in both amplification and switching circuits.
• Compact TO-92 package facilitates easy integration into electronic designs.
• High current gain ensures effective signal amplification.

Disadvantages

• Limited power dissipation capability compared to higher-power transistors.
• Susceptible to thermal runaway at high currents if not properly heat-sinked.

Working Principles

The 2N4401TA operates based on the principles of bipolar junction transistors. When a small current flows into the base terminal, it controls a much larger current flowing between the collector and emitter terminals. This property allows the transistor to amplify weak signals or act as a switch in electronic circuits.

Detailed Application Field Plans

The 2N4401TA finds extensive use in various electronic applications, including: - Audio amplifiers - Signal processing circuits - Switching regulators - Oscillator circuits - Logic level shifting circuits

Detailed and Complete Alternative Models

Some alternative models to the 2N4401TA include: - BC547 - 2N3904 - 2N2222 - PN2222

In conclusion, the 2N4401TA transistor serves as a fundamental building block in electronic circuit design, offering a balance of amplification and switching capabilities within a compact package. Its widespread use across diverse applications underscores its significance in modern electronics.

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