HA1-4741-2

Product Overview

Category: Electronic Component
Use: Signal Amplification
Characteristics: High Gain, Low Noise
Package: TO-92
Essence: Bipolar Junction Transistor (BJT)
Packaging/Quantity: 100 pieces per pack

Specifications

• Maximum Collector Current: 100mA
• Maximum Collector-Emitter Voltage: 45V
• Maximum Power Dissipation: 500mW
• Transition Frequency: 300MHz
• Collector-Emitter Saturation Voltage: 0.3V
• Base-Emitter Saturation Voltage: 0.7V

Detailed Pin Configuration

The HA1-4741-2 transistor has three pins:

1. Collector (C): This pin is connected to the positive terminal of the power supply or load.
2. Base (B): The input signal is applied to this pin for amplification.
3. Emitter (E): This pin is connected to the negative terminal of the power supply or ground.

Functional Features

• High gain amplification of weak signals.
• Low noise performance for improved signal quality.
• Suitable for small-signal amplification applications.
• Compact TO-92 package for easy integration into circuits.
• Wide operating voltage and temperature range.

Advantages and Disadvantages

Advantages: - High gain allows for amplification of weak signals. - Low noise performance ensures signal integrity. - Small form factor enables space-saving designs. - Versatile application possibilities due to wide operating range.

Disadvantages: - Limited maximum collector current may restrict use in high-power applications. - Lower transition frequency compared to some alternative models.

Working Principles

The HA1-4741-2 is a bipolar junction transistor (BJT) that operates based on the principles of amplification. When a small input signal is applied to the base pin, it controls the flow of current between the collector and emitter pins. The transistor amplifies the input signal, providing a larger output signal with increased voltage or current.

Detailed Application Field Plans

The HA1-4741-2 transistor finds applications in various electronic circuits where small-signal amplification is required. Some common application fields include:

1. Audio Amplifiers: Used to amplify audio signals in devices such as radios, televisions, and music players.
2. Communication Systems: Employed in signal processing stages of communication systems like transmitters and receivers.
3. Sensor Interfaces: Used to amplify weak signals from sensors for further processing.
4. Oscillators: Utilized in oscillator circuits to generate stable frequency signals.

Detailed and Complete Alternative Models

1. BC547: A widely used general-purpose NPN transistor with similar characteristics.
2. 2N3904: Another popular NPN transistor suitable for small-signal amplification.
3. MPSA18: High-gain NPN transistor with low noise performance.
4. 2SC945: Small-signal NPN transistor commonly used in audio amplifiers.

These alternative models offer similar functionality and can be considered as substitutes for the HA1-4741-2 depending on specific requirements.

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