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2N3904RL1G
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2N3904RL1G - Transistor Encyclopedia Entry

Introduction

The 2N3904RL1G is a widely used NPN bipolar junction transistor (BJT) that belongs to the category of discrete semiconductor devices. This entry provides an overview of the 2N3904RL1G, including its basic information, specifications, detailed pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

  • Category: Discrete Semiconductor Device
  • Use: Amplification, Switching
  • Characteristics: Small signal, low power, general purpose
  • Package: SOT-23
  • Essence: NPN BJT
  • Packaging/Quantity: Reel, 3000 units per reel

Specifications

  • Collector-Base Voltage (VCBO): 60V
  • Collector-Emitter Voltage (VCEO): 40V
  • Emitter-Base Voltage (VEBO): 6V
  • Collector Current (IC): 200mA
  • Power Dissipation (Pd): 350mW
  • Transition Frequency (ft): 300MHz
  • Operating Temperature Range: -55°C to 150°C

Detailed Pin Configuration

The 2N3904RL1G has three pins: 1. Emitter (E): Connected to the N-type material. 2. Base (B): Controls the transistor's action. 3. Collector (C): Collects the majority charge carriers.

Functional Features

  • Small size and lightweight
  • Low noise and distortion
  • High current gain
  • Fast switching speed

Advantages and Disadvantages

Advantages

  • Versatile applications in amplification and switching circuits
  • Cost-effective
  • Reliable performance in low-power applications

Disadvantages

  • Limited power handling capability
  • Susceptible to thermal runaway if not properly heat-sinked

Working Principles

The 2N3904RL1G operates as a current-controlled switch or amplifier. In the active region, a small current at the base terminal controls a much larger current flow between the collector and emitter terminals. This allows for signal amplification or digital switching functions.

Detailed Application Field Plans

The 2N3904RL1G finds extensive use in various electronic applications, including: - Audio amplifiers - Signal processing circuits - Switching circuits - Oscillator circuits - Sensor interfaces

Detailed and Complete Alternative Models

  • 2N2222A: Similar NPN BJT with higher current and power ratings
  • BC547: General-purpose NPN transistor with comparable characteristics
  • 2N4401: NPN transistor with higher current and voltage ratings

In conclusion, the 2N3904RL1G is a versatile and widely used NPN transistor with applications in amplification and switching circuits. Its compact size, low cost, and reliable performance make it a popular choice for various electronic designs.

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Orodhesha maswali na majibu 10 ya kawaida yanayohusiana na utumiaji wa 2N3904RL1G katika suluhu za kiufundi

  1. What is the 2N3904RL1G transistor used for?

    • The 2N3904RL1G is a general-purpose NPN bipolar junction transistor commonly used in amplification and switching applications.

  2. What are the typical operating conditions for the 2N3904RL1G?

    • The 2N3904RL1G typically operates at a maximum collector current of 200mA, with a maximum collector-emitter voltage of 40V.

  3. How do I determine the pinout of the 2N3904RL1G transistor?

    • The pinout of the 2N3904RL1G is typically Emitter (E), Base (B), and Collector (C) when viewing the flat side with the leads pointing downward.

  4. Can the 2N3904RL1G be used for audio amplification?

    • Yes, the 2N3904RL1G can be used for small-signal audio amplification due to its low noise and high gain characteristics.

  5. What are some common circuit configurations using the 2N3904RL1G?

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

  6. What are the key parameters to consider when designing with the 2N3904RL1G?

    • Key parameters include the maximum collector current, maximum power dissipation, and current gain (hFE).

  7. Can the 2N3904RL1G be used in high-frequency applications?

    • While the 2N3904RL1G has limitations at very high frequencies, it can still be used in moderate frequency applications such as audio and lower RF frequencies.

  8. Are there any common alternatives to the 2N3904RL1G?

    • Common alternatives include the 2N2222, BC547, and BC548 transistors, which have similar characteristics and can often be used interchangeably.

  9. What are the typical thermal considerations for the 2N3904RL1G?

    • Thermal considerations include ensuring proper heat sinking or derating the device's maximum power dissipation at elevated temperatures.

  10. Can the 2N3904RL1G be used in digital logic circuits?

    • While the 2N3904RL1G is primarily used in analog applications, it can be used in simple digital switching circuits at lower frequencies. For higher speed digital applications, other transistors may be more suitable.