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2N3807
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2N3807 Transistor

Product Overview

The 2N3807 is a PNP bipolar junction transistor (BJT) that falls under the category of electronic components. It is commonly used for amplification and switching applications due to its low noise and high current capability. The transistor is characterized by its small package size, making it suitable for compact electronic designs. Typically, the 2N3807 comes in a TO-92 package and is available in both through-hole and surface mount configurations.

Basic Information

  • Category: Electronic Component
  • Use: Amplification and Switching
  • Characteristics: Low Noise, High Current Capability
  • Package: TO-92
  • Packaging/Quantity: Available in Through-Hole and Surface Mount Configurations

Specifications

  • Collector-Emitter Voltage (VCEO): -20V
  • Collector-Base Voltage (VCBO): -40V
  • Emitter-Base Voltage (VEBO): -5V
  • Collector Current (IC): -600mA
  • Power Dissipation (Pd): 625mW
  • Transition Frequency (ft): 100MHz
  • Operating Temperature Range: -55°C to 150°C

Detailed Pin Configuration

The 2N3807 transistor has three pins: 1. Emitter (E): Connected to the N-type material. 2. Base (B): Controls the flow of current between the emitter and collector. 3. Collector (C): Collects the majority charge carriers, which are holes in the case of a PNP transistor.

Functional Features

The 2N3807 offers the following functional features: - High current gain - Low noise - Fast switching speed - Wide operating temperature range

Advantages and Disadvantages

Advantages

  • High current capability
  • Low noise performance
  • Compact package size

Disadvantages

  • Limited voltage and current ratings compared to other transistors
  • Relatively lower transition frequency

Working Principles

The 2N3807 operates based on the principles of bipolar junction transistors. When a small current flows into the base terminal, it controls a much larger current flowing between the collector and emitter terminals. This allows the transistor to amplify signals or act as a switch in electronic circuits.

Detailed Application Field Plans

The 2N3807 transistor finds applications in various electronic circuits, including: - Audio amplifiers - Signal amplification circuits - Switching circuits - Oscillator circuits

Detailed and Complete Alternative Models

Some alternative models to the 2N3807 include: - BC557 - 2N3906 - 2N4403 - BC558

In conclusion, the 2N3807 transistor is a versatile component with applications in amplification and switching circuits. Its compact size and high current capability make it a popular choice for various electronic designs.

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10個與2N3807在技術方案中應用相關的常見問題與解答

  1. What is the 2N3807 transistor used for?

    • The 2N3807 is a PNP bipolar junction transistor commonly used for amplification and switching applications in electronic circuits.

  2. What are the typical operating conditions for the 2N3807 transistor?

    • The 2N3807 transistor typically operates at a maximum collector-emitter voltage of 40V and a collector current of 600mA.

  3. How do I identify the pinout of the 2N3807 transistor?

    • The pinout of the 2N3807 transistor is typically Emitter (E), Base (B), and Collector (C) when viewing the flat side with the leads pointing downward.

  4. What are some common circuit configurations using the 2N3807 transistor?

    • Common circuit configurations include common emitter amplifiers, switch circuits, and voltage regulators.

  5. What are the key characteristics of the 2N3807 transistor?

    • The 2N3807 transistor has a high current gain (hFE), low saturation voltage, and moderate frequency response.

  6. How do I calculate the base resistor for driving the 2N3807 transistor?

    • The base resistor can be calculated using Ohm's law and the base current required to drive the transistor into saturation or active mode.

  7. What are the typical applications of the 2N3807 transistor?

    • The 2N3807 transistor is commonly used in audio amplifiers, voltage regulators, motor control circuits, and signal processing applications.

  8. What are the thermal considerations for the 2N3807 transistor?

    • It is important to consider heat dissipation and thermal resistance when designing circuits using the 2N3807 transistor to ensure proper operation and reliability.

  9. How do I test the 2N3807 transistor for proper functionality?

    • The 2N3807 transistor can be tested using a multimeter in diode test mode to check for proper junction behavior and continuity.

  10. Where can I find detailed specifications and application notes for the 2N3807 transistor?

    • Detailed specifications and application notes for the 2N3807 transistor can be found in the manufacturer's datasheet and technical documentation.