Encyclopedia Entry: 111-4188PBF

Product Information Overview

Category: Electronic Component
Use: Signal Amplification
Characteristics: High Gain, Low Noise
Package: TO-92
Essence: NPN Transistor
Packaging/Quantity: Bulk Packaging, 1000 units per pack

Specifications

• Type: NPN Transistor
• Model Number: 111-4188PBF
• Maximum Collector Current: 500mA
• Maximum Collector-Emitter Voltage: 40V
• Maximum Power Dissipation: 625mW
• Transition Frequency: 300MHz
• Operating Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The 111-4188PBF transistor has three pins:

1. Base (B): Used for input signal control.
2. Emitter (E): Connected to the ground or reference potential.
3. Collector (C): Outputs the amplified signal.

Functional Features

• High Gain: The 111-4188PBF offers a high voltage gain, making it suitable for amplifying weak signals.
• Low Noise: This transistor has low noise characteristics, ensuring minimal interference in signal amplification.
• Fast Switching Speed: It provides fast switching capabilities, enabling quick response times in signal processing applications.

Advantages and Disadvantages

Advantages: - High gain allows for effective signal amplification. - Low noise ensures accurate signal reproduction. - Fast switching speed enables rapid signal processing.

Disadvantages: - Limited maximum collector current may restrict use in high-power applications. - Narrow operating temperature range may limit usage in extreme environments.

Working Principles

The 111-4188PBF is an NPN transistor that operates based on the principles of bipolar junction transistors (BJTs). When a small current flows into the base pin (B), it controls a larger current flow between the collector (C) and emitter (E). This amplification of the input signal allows for various applications in electronic circuits.

Detailed Application Field Plans

The 111-4188PBF transistor finds application in various fields, including:

1. Audio Amplification: It can be used to amplify audio signals in audio systems, such as speakers and headphones.
2. Radio Frequency (RF) Circuits: The transistor's high gain and low noise characteristics make it suitable for RF signal amplification in communication systems.
3. Sensor Interface: It can be utilized in sensor interface circuits to amplify weak sensor signals for further processing.
4. Oscillator Circuits: The fast switching speed of the transistor makes it useful in oscillator circuits for generating high-frequency signals.

Detailed and Complete Alternative Models

1. 2N3904: A widely used NPN transistor with similar characteristics to the 111-4188PBF.
2. BC547: Another popular NPN transistor suitable for general-purpose amplification.
3. PN2222: An NPN transistor commonly used in low-power applications.

These alternative models offer comparable performance and can be considered as substitutes for the 111-4188PBF transistor.

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