Microsemi Corporation
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2N4261
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2N4261 Transistor

Product Overview

The 2N4261 is a silicon PNP transistor that belongs to the category of electronic components. It is commonly used in amplification and switching circuits due to its high gain and low noise characteristics. The transistor is typically packaged in a TO-92 package and is available in various packaging quantities. Its essence lies in its ability to amplify and control electrical signals in electronic circuits.

Specifications

  • Type: PNP
  • Material: Silicon
  • Package: TO-92
  • Maximum Power Dissipation: 625mW
  • Collector-Base Voltage (Vcbo): -40V
  • Collector-Emitter Voltage (Vceo): -25V
  • Emitter-Base Voltage (Vebo): -5V
  • Collector Current (Ic): -300mA
  • DC Current Gain (hfe): 100-300
  • Transition Frequency (ft): 50MHz

Pin Configuration

The 2N4261 transistor has three pins: 1. Base (B) 2. Emitter (E) 3. Collector (C)

Functional Features

The 2N4261 transistor offers the following functional features: - High gain: The transistor provides high current gain, making it suitable for amplification purposes. - Low noise: It exhibits low noise characteristics, making it ideal for signal processing applications. - Fast switching: The transistor has a fast switching speed, enabling rapid on/off transitions in switching circuits.

Advantages and Disadvantages

Advantages

  • High gain and low noise characteristics make it suitable for audio amplification applications.
  • Compact TO-92 package allows for easy integration into electronic circuits.
  • Fast switching speed enables efficient operation in switching applications.

Disadvantages

  • Limited maximum power dissipation may restrict its use in high-power applications.
  • Relatively low collector current compared to other transistors may limit its applicability in certain circuits.

Working Principles

The 2N4261 operates based on the principles of bipolar junction transistors (BJTs). In a PNP transistor configuration, when a small current flows from the base to the emitter, a larger current flows from the collector to the emitter, allowing for amplification and control of electrical signals.

Detailed Application Field Plans

The 2N4261 transistor finds application in various electronic circuits, including: - Audio amplifiers: Due to its high gain and low noise characteristics, it is commonly used in audio amplifier circuits. - Switching circuits: Its fast switching speed makes it suitable for use in switching applications such as digital logic circuits and signal processing.

Detailed and Complete Alternative Models

Some alternative models to the 2N4261 transistor include: - 2N4401: A general-purpose NPN transistor with similar characteristics to the 2N4261. - BC557: A PNP transistor with comparable specifications and pin configuration.

In conclusion, the 2N4261 transistor is a versatile electronic component with applications in amplification and switching circuits. Its high gain, low noise, and fast switching characteristics make it a valuable asset in various electronic designs.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací 2N4261 v technických řešeních

  1. What is the 2N4261 transistor used for?

    • The 2N4261 is a high-frequency NPN transistor commonly used in RF and microwave applications.

  2. What are the key specifications of the 2N4261 transistor?

    • The 2N4261 has a maximum collector-base voltage of 30V, a maximum collector current of 50mA, and a transition frequency of 800MHz.

  3. Can the 2N4261 be used in amplifier circuits?

    • Yes, the 2N4261 is suitable for use in amplifier circuits, especially in high-frequency applications.

  4. What are the typical applications of the 2N4261 transistor?

    • Typical applications include RF amplifiers, oscillators, mixers, and other high-frequency signal processing circuits.

  5. Is the 2N4261 suitable for use in VHF or UHF circuits?

    • Yes, the 2N4261 is well-suited for VHF and UHF circuits due to its high-frequency capabilities.

  6. What are the recommended operating conditions for the 2N4261?

    • The 2N4261 operates best within a temperature range of -65°C to 200°C and should be used with appropriate biasing and matching networks in RF applications.

  7. Can the 2N4261 be used in low-noise amplifier designs?

    • Yes, the 2N4261 can be utilized in low-noise amplifier designs, particularly in high-frequency communication systems.

  8. Are there any common pitfalls to avoid when using the 2N4261?

    • It's important to ensure proper heat dissipation and avoid exceeding the maximum ratings, especially in high-power applications.

  9. What are some alternative transistors to consider if the 2N4261 is not available?

    • Alternatives include the 2N5109, 2N3866, and MRF947T, which offer similar performance in high-frequency applications.

  10. Where can I find detailed application notes for using the 2N4261 in technical solutions?

    • Detailed application notes and circuit examples can often be found in the datasheet provided by the manufacturer or through reputable electronics resources and forums.