Encyclopedia Entry: 72851L15TF

Product Information Overview

• Category: Electronic Component
• Use: Signal Amplification and Filtering
• Characteristics: High Gain, Low Noise, Wide Frequency Range
• Package: TO-92
• Essence: Transistor
• Packaging/Quantity: Individually Packaged, Quantity per Package: 100

Specifications

• Model Number: 72851L15TF
• Type: NPN Bipolar Junction Transistor
• Maximum Collector Current (Ic): 500mA
• Maximum Collector-Emitter Voltage (Vceo): 30V
• Maximum Power Dissipation (Pd): 625mW
• Transition Frequency (ft): 250MHz
• Operating Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The 72851L15TF transistor has three pins:

1. Emitter (E): The Emitter pin is connected to the emitter region of the transistor.
2. Base (B): The Base pin is connected to the base region of the transistor.
3. Collector (C): The Collector pin is connected to the collector region of the transistor.

Functional Features

• High gain amplification of weak signals.
• Low noise performance for improved signal quality.
• Wide frequency range allows for versatile applications.
• Suitable for small-signal amplification and filtering circuits.
• Stable and reliable operation under varying conditions.

Advantages and Disadvantages

Advantages: - High gain amplification improves signal strength. - Low noise performance ensures signal clarity. - Wide frequency range allows for diverse applications. - Stable operation under varying conditions enhances reliability.

Disadvantages: - Limited maximum collector current may restrict high-power applications. - Restricted maximum collector-emitter voltage limits voltage handling capabilities. - Transition frequency may limit performance in high-frequency applications.

Working Principles

The 72851L15TF transistor operates based on the principles of bipolar junction transistors (BJTs). It is an NPN type transistor, where the flow of current occurs from the emitter to the collector region. By applying a small current at the base pin, the transistor can control a larger current flowing through the collector-emitter path. This amplification property makes it suitable for signal amplification and filtering applications.

Detailed Application Field Plans

The 72851L15TF transistor finds applications in various electronic circuits, including but not limited to:

1. Audio Amplifiers: Used to amplify weak audio signals for improved sound quality.
2. Radio Frequency (RF) Circuits: Employed in RF amplification stages to enhance signal strength.
3. Oscillators: Utilized in oscillator circuits for generating stable oscillations.
4. Communication Systems: Integrated into communication devices for signal processing and amplification.
5. Sensor Interfaces: Incorporated in sensor interface circuits to amplify and condition sensor signals.

Detailed and Complete Alternative Models

1. 2N3904: A widely used NPN transistor with similar characteristics.
2. BC547: Another popular NPN transistor suitable for small-signal amplification.
3. PN2222: NPN transistor with higher maximum collector current capability.
4. MPSA18: High-gain NPN transistor designed for low noise applications.
5. 2SC945: NPN transistor commonly used in audio amplifiers.

(Note: The above list provides only a few alternative models; there are numerous other options available in the market.)

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