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2N4865

2N4865 Transistor

Product Overview

Category:

The 2N4865 is a bipolar junction NPN transistor.

Use:

It is commonly used as a general-purpose amplifier or switch in electronic circuits.

Characteristics:

  • Low power dissipation
  • High current gain
  • Medium voltage capability

Package:

The 2N4865 is typically available in a TO-92 package.

Essence:

The essence of the 2N4865 lies in its ability to amplify and switch electronic signals efficiently.

Packaging/Quantity:

The 2N4865 is usually sold in reels or tubes containing multiple units, with quantities varying based on the supplier.

Specifications

  • Collector-Emitter Voltage (VCEO): 40V
  • Collector-Base Voltage (VCBO): 60V
  • Emitter-Base Voltage (VEBO): 6V
  • Collector Current (IC): 200mA
  • Power Dissipation (PD): 625mW
  • Transition Frequency (ft): 100MHz

Detailed Pin Configuration

The 2N4865 transistor has three pins: the collector (C), base (B), and emitter (E). The pinout configuration is as follows: - Collector (C) - Pin 1 - Base (B) - Pin 2 - Emitter (E) - Pin 3

Functional Features

The 2N4865 transistor offers the following functional features: - Amplification of weak electronic signals - Switching capability for electronic circuits - Reliable performance in low-power applications

Advantages and Disadvantages

Advantages

  • High current gain
  • Low power dissipation
  • Versatile use in amplification and switching circuits

Disadvantages

  • Limited voltage and current handling capabilities compared to higher-power transistors
  • Sensitive to temperature variations

Working Principles

The 2N4865 operates based on the principles of bipolar junction transistors, where the flow of current between the collector and emitter is controlled by the base current. It amplifies or switches electronic signals by modulating this flow of current.

Detailed Application Field Plans

The 2N4865 transistor finds application in various electronic circuits, including: - Audio amplifiers - Signal amplification stages - Switching circuits - Oscillators

Detailed and Complete Alternative Models

Some alternative models to the 2N4865 include: - 2N2222 - BC547 - 2N3904 - PN2222

In conclusion, the 2N4865 transistor is a versatile component widely used in electronic circuits for amplification and switching purposes. Its characteristics make it suitable for a range of low-power applications, and it is often found in audio amplifiers, signal amplification stages, and switching circuits.

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技術ソリューションにおける 2N4865 の適用に関連する 10 件の一般的な質問と回答をリストします。

  1. What is the 2N4865 transistor used for?

    • The 2N4865 is a PNP silicon transistor commonly used for general-purpose switching and amplification in electronic circuits.

  2. What are the key specifications of the 2N4865 transistor?

    • The 2N4865 has a maximum collector-base voltage of 60V, a maximum collector current of 0.1A, and a power dissipation of 0.625W.

  3. Can the 2N4865 be used for low-power amplification?

    • Yes, the 2N4865 can be used for low-power audio or signal amplification due to its moderate current and voltage ratings.

  4. Is the 2N4865 suitable for switching applications?

    • Yes, the 2N4865 is commonly used for switching small loads in electronic circuits due to its moderate current and voltage handling capabilities.

  5. What are some typical circuit configurations using the 2N4865?

    • The 2N4865 can be used in common emitter or common collector configurations for amplification, and in switch mode for on/off control of devices.

  6. Are there any specific considerations when using the 2N4865 in high-frequency applications?

    • The 2N4865 may not be suitable for high-frequency applications due to its transition frequency of around 30MHz.

  7. Can the 2N4865 be used in temperature-sensitive environments?

    • The 2N4865 has a maximum operating temperature of 150°C, so it should be used with caution in high-temperature environments.

  8. What are some alternative transistors to the 2N4865?

    • Alternatives to the 2N4865 include the 2N3906, BC557, and 2N4403, which are also PNP transistors with similar characteristics.

  9. Does the 2N4865 require any special heat sinking or mounting considerations?

    • For high-power applications, proper heat sinking and mounting techniques should be employed to ensure the 2N4865 operates within its specified temperature limits.

  10. Where can I find detailed datasheets and application notes for the 2N4865?

    • Datasheets and application notes for the 2N4865 can be found on semiconductor manufacturer websites, distributor platforms, or technical documentation repositories.