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2N3904TFR
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2N3904TFR - Transistor Encyclopedia Entry

Introduction

The 2N3904TFR is a widely used NPN bipolar junction transistor (BJT) that belongs to the category of small signal transistors. This entry provides an overview of its basic information, specifications, detailed pin configuration, functional features, advantages and disadvantages, working principles, detailed application field plans, and alternative models.

Basic Information Overview

  • Category: Small Signal Transistor
  • Use: Amplification, Switching
  • Characteristics: Low power, high frequency, general purpose
  • Package: TO-92
  • Essence: NPN BJT
  • Packaging/Quantity: Bulk, Tape & Reel

Specifications

  • Collector-Base Voltage (VCBO): 60V
  • Collector-Emitter Voltage (VCEO): 40V
  • Emitter-Base Voltage (VEBO): 6V
  • Collector Current (IC): 200mA
  • Power Dissipation (Pd): 625mW
  • Transition Frequency (ft): 300MHz
  • Operating Temperature Range: -55°C to 150°C

Detailed Pin Configuration

  1. Emitter (E)
  2. Base (B)
  3. Collector (C)

Functional Features

  • High current gain
  • Low noise
  • Fast switching speed
  • Wide range of operating frequencies

Advantages and Disadvantages

Advantages

  • Versatile applications in amplification and switching circuits
  • Small form factor
  • Cost-effective
  • Reliable performance

Disadvantages

  • Limited power handling capability
  • Susceptible to thermal runaway at high currents

Working Principles

The 2N3904TFR operates based on the principles of bipolar junction transistors. In amplification applications, it utilizes the flow of current through the base-emitter junction to control the larger current flowing between the collector and emitter. In switching applications, it can rapidly transition between cutoff and saturation states based on the input signal.

Detailed Application Field Plans

The 2N3904TFR finds extensive use in various electronic circuits, including: - Audio amplifiers - Signal amplification stages - Oscillators - Switching circuits - Voltage regulators

Detailed and Complete Alternative Models

  • 2N2222A: Similar characteristics, higher current handling capacity
  • BC547: Comparable performance, different pin configuration
  • 2N4401: Higher power dissipation, similar voltage ratings

In conclusion, the 2N3904TFR is a versatile small signal transistor with widespread applications in electronics due to its reliable performance, compact size, and cost-effectiveness.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan 2N3904TFR dalam solusi teknis

  1. What is the 2N3904TFR transistor used for?

    • The 2N3904TFR is a general-purpose NPN bipolar junction transistor commonly used for amplification and switching applications in electronic circuits.

  2. What are the typical operating conditions for the 2N3904TFR?

    • The 2N3904TFR typically operates at a maximum collector current of 200mA, with a maximum collector-emitter voltage of 40V.

  3. How do I identify the pinout of the 2N3904TFR transistor?

    • The pinout of the 2N3904TFR transistor is typically Emitter (E), Base (B), and Collector (C) when viewing the flat side with the leads pointing downward.

  4. What are some common circuit configurations using the 2N3904TFR?

    • Common circuit configurations include common emitter amplifiers, switch circuits, and oscillator circuits.

  5. What are the key characteristics of the 2N3904TFR that make it suitable for technical solutions?

    • The 2N3904TFR offers high current gain, low noise, and low power dissipation, making it versatile for various technical applications.

  6. Can the 2N3904TFR be used for audio amplification?

    • Yes, the 2N3904TFR can be used in small-signal audio amplifier circuits due to its low noise and high gain characteristics.

  7. What are the temperature limitations of the 2N3904TFR?

    • The 2N3904TFR has a maximum operating temperature of 150°C, making it suitable for a wide range of environmental conditions.

  8. Are there any common failure modes associated with the 2N3904TFR?

    • Common failure modes include thermal runaway under high current conditions and breakdown due to excessive voltage.

  9. Can the 2N3904TFR be used in digital logic circuits?

    • While primarily designed for analog applications, the 2N3904TFR can be used in simple digital switching circuits due to its fast switching speed.

  10. Where can I find detailed specifications and application notes for the 2N3904TFR?

    • Detailed specifications and application notes for the 2N3904TFR can be found in the manufacturer's datasheet and application guides, as well as in various electronics reference books and online resources.