Microsemi Corporation
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2N6849
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2N6849 Transistor

Product Overview

Category

The 2N6849 is a bipolar junction transistor (BJT) belonging to the NPN type.

Use

It is commonly used for amplification and switching applications in electronic circuits.

Characteristics

  • Low power, general-purpose transistor
  • High current gain
  • Medium voltage capability
  • Small package size

Package

The 2N6849 is typically available in TO-92 packaging.

Essence

This transistor is essential for low-power amplification and switching tasks in various electronic devices.

Packaging/Quantity

It is usually sold in reels or tubes containing multiple units.

Specifications

  • Maximum Collector-Emitter Voltage: 40V
  • Maximum Collector-Base Voltage: 40V
  • Maximum Emitter-Base Voltage: 5V
  • Continuous Collector Current: 100mA
  • Power Dissipation: 300mW
  • Transition Frequency: 50MHz

Detailed Pin Configuration

The 2N6849 has three pins: 1. Collector (C) 2. Base (B) 3. Emitter (E)

Functional Features

  • High current gain allows for efficient signal amplification
  • Low power consumption makes it suitable for battery-operated devices
  • Small package size enables integration into compact circuit designs

Advantages and Disadvantages

Advantages

  • High current gain
  • Low power consumption
  • Compact package size

Disadvantages

  • Limited maximum voltage and current ratings
  • Relatively low transition frequency

Working Principles

The 2N6849 operates as a current-controlled switch or amplifier. When a small current flows into the base terminal, it controls a larger current flow between the collector and emitter terminals, allowing for signal amplification or switching functionality.

Detailed Application Field Plans

The 2N6849 is widely used in: - Audio amplifiers - Signal processing circuits - Switching circuits - Oscillator circuits - Low-power control circuits

Detailed and Complete Alternative Models

Some alternative models to the 2N6849 include: - 2N2222 - BC547 - 2N3904 - 2N4401

In conclusion, the 2N6849 transistor is a versatile component with applications in various electronic circuits, offering high current gain and low power consumption. Its compact size and functional features make it suitable for a wide range of low-power applications.

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Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням 2N6849 у технічних рішеннях

  1. What is the 2N6849 transistor used for?

    • The 2N6849 is a general-purpose NPN transistor commonly used for amplification and switching applications.

  2. What are the typical operating conditions for the 2N6849?

    • The 2N6849 operates at a maximum collector-emitter voltage of 40V and a maximum collector current of 100mA.

  3. Can the 2N6849 be used for audio amplification?

    • Yes, the 2N6849 can be used for small-signal audio amplification due to its low noise and high gain characteristics.

  4. How do I connect the 2N6849 in a common emitter amplifier circuit?

    • In a common emitter configuration, the 2N6849 is typically connected with the base as the input, the collector as the output, and the emitter grounded through a biasing resistor.

  5. What are the suitable alternatives to the 2N6849 transistor?

    • Common alternatives to the 2N6849 include the 2N3904, BC547, and 2N2222 transistors, which have similar characteristics and can be used in its place.

  6. What are the thermal considerations for the 2N6849 in a circuit?

    • It is important to consider heat dissipation when using the 2N6849, especially if it is operating near its maximum ratings, to ensure proper thermal management and reliability.

  7. Can the 2N6849 be used in high-frequency applications?

    • While the 2N6849 has moderate frequency capabilities, it may not be suitable for very high-frequency applications due to its transition frequency and capacitance characteristics.

  8. What are the typical gain and frequency response of the 2N6849?

    • The 2N6849 has a typical DC current gain (hfe) of 100-300 and a frequency response that extends into the low MHz range, making it suitable for many general-purpose applications.

  9. How do I protect the 2N6849 from overvoltage or overcurrent conditions?

    • Using appropriate current-limiting resistors and voltage clamping diodes can help protect the 2N6849 from overvoltage and overcurrent situations in a circuit.

  10. Are there any specific layout considerations when using the 2N6849 in a PCB design?

    • It is important to minimize lead lengths, provide adequate grounding, and avoid high-inductance loops in the PCB layout to ensure stable and reliable operation of the 2N6849.