Microsemi Corporation
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2N2907AUB
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2N2907AUB

Product Overview

The 2N2907AUB belongs to the category of PNP bipolar junction transistors (BJTs). It is commonly used as a general-purpose amplifier and switch in various electronic circuits. The transistor exhibits characteristics such as low power dissipation, high current gain, and low noise. It is typically available in a small SOT-323 package and is an essential component in many electronic devices.

Package and Quantity

The 2N2907AUB is usually packaged in reels with a quantity of 3000 units per reel.

Specifications

  • Collector-Emitter Voltage: -60V
  • Collector-Base Voltage: -60V
  • Emitter-Base Voltage: -5V
  • Collector Current: -600mA
  • Power Dissipation: 625mW
  • Transition Frequency: 250MHz
  • Operating Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The 2N2907AUB has three pins: 1. Collector (C): This pin is connected to the positive supply voltage when used as a switch or the output when used as an amplifier. 2. Base (B): The input control signal is applied to this pin for controlling the transistor's operation. 3. Emitter (E): This pin is grounded when used as a switch and is the emitter of the output signal when used as an amplifier.

Functional Features

The 2N2907AUB offers high current gain, making it suitable for amplification purposes. It also exhibits low noise, which is advantageous in applications where signal fidelity is crucial. Additionally, its compact SOT-323 package makes it suitable for space-constrained designs.

Advantages and Disadvantages

Advantages

  • High current gain
  • Low noise
  • Compact package size

Disadvantages

  • Limited power dissipation capability
  • Relatively low transition frequency

Working Principles

The 2N2907AUB operates based on the principles of bipolar junction transistors. When used as an amplifier, a small input current at the base terminal controls a much larger output current between the collector and emitter terminals. As a switch, the transistor can be turned on and off by applying a small control signal to the base terminal.

Detailed Application Field Plans

The 2N2907AUB finds extensive use in audio amplifiers, signal processing circuits, and low-power switching applications. Its high current gain and low noise characteristics make it suitable for audio amplification, while its compact package size allows for integration into portable electronic devices.

Detailed and Complete Alternative Models

Some alternative models to the 2N2907AUB include the BC557, BC558, and 2N3906. These transistors offer similar PNP BJT functionality and can be used as substitutes depending on specific design requirements.

In conclusion, the 2N2907AUB is a versatile PNP BJT that finds widespread application in various electronic circuits due to its high current gain, low noise, and compact package size.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací 2N2907AUB v technických řešeních

  1. What is the 2N2907AUB transistor used for?

    • The 2N2907AUB is a general-purpose PNP bipolar junction transistor commonly used for amplification and switching applications.

  2. What are the typical operating conditions for the 2N2907AUB?

    • The 2N2907AUB typically operates at a maximum collector-emitter voltage of 60V and a maximum collector current of 600mA.

  3. How do I identify the pinout of the 2N2907AUB transistor?

    • The pinout of the 2N2907AUB is typically Emitter (E), Base (B), and Collector (C).

  4. Can the 2N2907AUB be used for audio amplification?

    • Yes, the 2N2907AUB can be used in audio amplifier circuits due to its low noise and high gain characteristics.

  5. What are some common applications of the 2N2907AUB in technical solutions?

    • Common applications include audio amplifiers, signal amplification, switching circuits, and voltage regulation.

  6. What are the key parameters to consider when designing with the 2N2907AUB?

    • Key parameters include maximum voltage and current ratings, gain, frequency response, and power dissipation.

  7. Can the 2N2907AUB be used in low-power applications?

    • Yes, the 2N2907AUB is suitable for low-power applications due to its moderate current and voltage ratings.

  8. Are there any specific considerations for driving inductive loads with the 2N2907AUB?

    • When driving inductive loads, it's important to use appropriate flyback diodes to protect the transistor from voltage spikes.

  9. What are the typical thermal considerations for the 2N2907AUB?

    • Thermal considerations include proper heat sinking to ensure the transistor operates within its temperature limits.

  10. Can the 2N2907AUB be used in high-frequency applications?

    • While the 2N2907AUB has moderate frequency response, it may not be suitable for very high-frequency applications due to its transition frequency limitations.