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2N4118A
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2N4118A Transistor

Product Overview

The 2N4118A is a bipolar junction transistor (BJT) belonging to the category of small-signal transistors. It is commonly used for amplification and switching applications due to its high frequency and low noise characteristics. The transistor comes in a TO-18 package, with a quantity of one per package.

Basic Information

  • Category: Small-signal transistor
  • Use: Amplification and switching
  • Characteristics: High frequency, low noise
  • Package: TO-18
  • Essence: BJT
  • Packaging/Quantity: Single unit per package

Specifications

  • Type: NPN
  • Maximum Power Dissipation: 300 mW
  • Collector-Base Voltage (Vcbo): 50 V
  • Collector-Emitter Voltage (Vceo): 30 V
  • Emitter-Base Voltage (Vbe): 5 V
  • Collector Current (Ic): 200 mA
  • DC Current Gain (hfe): 40 - 250
  • Transition Frequency (ft): 100 MHz

Detailed Pin Configuration

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

Functional Features

  • High frequency capability
  • Low noise performance
  • Suitable for small-signal applications

Advantages and Disadvantages

Advantages

  • High frequency operation
  • Low noise amplification
  • Versatile for small-signal applications

Disadvantages

  • Limited power handling capability
  • Sensitivity to temperature variations

Working Principles

The 2N4118A operates based on the principles of bipolar junction transistors, utilizing the flow of charge carriers to amplify or switch electronic signals. When biased correctly, it allows for controlled amplification of small signals and can be used in various electronic circuits.

Detailed Application Field Plans

The 2N4118A is commonly used in: - Radio frequency (RF) amplifiers - Oscillator circuits - Switching applications - Signal processing circuits

Detailed and Complete Alternative Models

  • 2N3904
  • 2N2222
  • BC547
  • BC548

In conclusion, the 2N4118A transistor offers high frequency and low noise characteristics, making it suitable for small-signal amplification and switching applications. While it has limitations in power handling and temperature sensitivity, it remains a popular choice in RF and signal processing circuits.

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10個與2N4118A在技術方案中應用相關的常見問題與解答

  1. What is the 2N4118A transistor used for?

    • The 2N4118A is a general-purpose NPN bipolar junction transistor commonly used for amplification and switching applications.

  2. What are the key specifications of the 2N4118A transistor?

    • The 2N4118A has a maximum collector current of 200mA, a maximum collector-emitter voltage of 25V, and a maximum power dissipation of 300mW.

  3. Can the 2N4118A be used for audio amplifier circuits?

    • Yes, the 2N4118A can be used in low-power audio amplifier circuits due to its moderate current and voltage ratings.

  4. Is the 2N4118A suitable for switching applications?

    • Yes, the 2N4118A can be used for low-power switching applications due to its moderate current and voltage ratings.

  5. What are some typical circuit configurations using the 2N4118A?

    • Common circuit configurations include common emitter amplifiers, switch circuits, and signal amplification stages in electronic systems.

  6. Are there any recommended biasing arrangements for the 2N4118A?

    • Yes, typical biasing arrangements include fixed bias, emitter bias, and voltage divider bias depending on the specific application requirements.

  7. What are the temperature considerations for the 2N4118A?

    • The 2N4118A operates within a temperature range of -65°C to 200°C, making it suitable for a wide range of operating conditions.

  8. Can the 2N4118A be used in high-frequency applications?

    • While the 2N4118A is not specifically designed for high-frequency applications, it can still be used in moderate frequency circuits with appropriate design considerations.

  9. What are some alternative transistors to the 2N4118A?

    • Alternatives include 2N3904, BC547, and 2N2222, which have similar characteristics and can be used as substitutes based on specific design requirements.

  10. Where can I find detailed datasheets and application notes for the 2N4118A?

    • Detailed datasheets and application notes for the 2N4118A can be found on semiconductor manufacturer websites or electronic component distributor platforms.