Microsemi Corporation
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2N2904AL
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2N2904AL Transistor

Product Overview

The 2N2904AL is a bipolar junction NPN transistor commonly used in electronic circuits. It falls under the category of discrete semiconductor components and is widely utilized for amplification, switching, and signal processing applications. Known for its high reliability and low noise characteristics, the 2N2904AL is typically packaged in a TO-92 package and is available in various quantities.

Specifications

  • Type: NPN Bipolar Junction Transistor
  • Package: TO-92
  • Maximum Power Dissipation: 600mW
  • Collector-Base Voltage (VCBO): 60V
  • Collector-Emitter Voltage (VCEO): 40V
  • Emitter-Base Voltage (VEBO): 5V
  • Collector Current (IC): 600mA
  • DC Current Gain (hFE): 100 - 300
  • Operating Temperature Range: -65°C to 200°C

Pin Configuration

The 2N2904AL transistor features three pins: 1. Collector (C): Connected to the positive supply voltage in most applications. 2. Base (B): Controls the transistor's conductivity when a small current is applied. 3. Emitter (E): Allows the flow of current from the collector to the emitter.

Functional Features

The 2N2904AL transistor offers the following functional features: - High gain and low noise characteristics - Fast switching speed - Wide operating temperature range - Compatibility with automated insertion equipment

Advantages and Disadvantages

Advantages

  • Reliable and durable
  • Low noise performance
  • Versatile applications in amplification and switching circuits

Disadvantages

  • Limited power handling capability
  • Sensitive to overvoltage conditions

Working Principles

When a small current is applied to the base terminal, the 2N2904AL transistor allows a larger current to flow from the collector to the emitter. This property enables it to amplify signals and control the flow of current in electronic circuits.

Application Field Plans

The 2N2904AL transistor finds extensive use in the following application fields: - Audio amplifiers - Signal processing circuits - Switching circuits - Oscillator circuits - Voltage regulators

Alternative Models

For applications requiring similar functionality, alternative models to the 2N2904AL include: - BC547 - 2N2222 - 2N3904 - PN2222A

In conclusion, the 2N2904AL transistor is a versatile component with wide-ranging applications in electronic circuits, offering high reliability and low noise performance. Its compact TO-92 package and compatibility with automated insertion equipment make it a popular choice among electronics enthusiasts and professionals.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af 2N2904AL i tekniske løsninger

  1. What is the 2N2904AL transistor used for?

    • The 2N2904AL is a general-purpose NPN bipolar junction transistor commonly used for amplification and switching applications in electronic circuits.

  2. What are the typical operating conditions for the 2N2904AL?

    • The 2N2904AL typically operates at a maximum collector current of 600mA, with a maximum collector-emitter voltage of 40V.

  3. How do I determine the pinout of the 2N2904AL transistor?

    • The pinout of the 2N2904AL transistor is typically Emitter-Base-Collector (EBC), but it's important to refer to the datasheet for specific manufacturer pinouts.

  4. Can the 2N2904AL be used for audio amplification?

    • Yes, the 2N2904AL 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 2N2904AL?

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

  6. What are the thermal considerations when using the 2N2904AL in a design?

    • It's important to consider proper heat sinking and thermal management to ensure the 2N2904AL operates within its specified temperature range to maintain reliability.

  7. Can the 2N2904AL be used in high-frequency applications?

    • While the 2N2904AL has moderate frequency capabilities, it may not be suitable for very high-frequency applications due to its transition frequency limitations.

  8. Are there any common failure modes associated with the 2N2904AL?

    • Common failure modes include thermal runaway under high current conditions and breakdown due to excessive voltage stress.

  9. What are the alternatives to the 2N2904AL if it's not available?

    • Alternatives include similar NPN transistors such as 2N2222, BC547, or BC548, but it's important to check the specifications and pinout compatibility.

  10. How can I protect the 2N2904AL from overcurrent and overvoltage conditions?

    • Using appropriate current-limiting resistors and voltage clamping diodes in the circuit can help protect the 2N2904AL from overcurrent and overvoltage conditions.