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2N1804

2N1804 Transistor

Product Overview

The 2N1804 is a bipolar junction NPN transistor commonly used in electronic circuits. It falls under the category of discrete semiconductor devices and is widely utilized for amplification, switching, and signal processing applications. Known for its high gain and low noise characteristics, the 2N1804 is typically packaged in a TO-39 metal can and is available in various quantities.

Specifications

  • Type: NPN Bipolar Junction Transistor
  • Package: TO-39 Metal Can
  • Quantity: Variable
  • Use: Amplification, Switching, Signal Processing
  • Characteristics: High Gain, Low Noise

Pin Configuration

The 2N1804 transistor features three pins: 1. Emitter (E): Current source or sink 2. Base (B): Controls the transistor's conductivity 3. Collector (C): Collects current from the base

Functional Features

The 2N1804 offers the following functional features: - High amplification factor - Low noise operation - Reliable switching capabilities - Wide operating temperature range

Advantages and Disadvantages

Advantages

  • High gain for signal amplification
  • Low noise performance
  • Versatile applications in electronic circuits

Disadvantages

  • Limited power handling capacity
  • Susceptible to thermal runaway at high currents

Working Principles

The 2N1804 operates based on the principles of bipolar junction transistors. When a small current flows into the base terminal, it controls a larger current flow between the collector and emitter terminals. This allows the transistor to amplify signals or act as a switch in electronic circuits.

Application Field Plans

The 2N1804 transistor finds extensive use in the following application fields: - Audio amplifiers - Signal processing circuits - Switching circuits - Oscillator circuits

Alternative Models

For those seeking alternatives to the 2N1804, several comparable transistors are available, including: - BC547 - 2N2222 - PN2222

In conclusion, the 2N1804 transistor is a versatile component with high gain and low noise characteristics, making it suitable for a wide range of electronic applications.

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  1. What is the 2N1804 transistor used for?

    • The 2N1804 transistor is commonly used for amplification and switching applications in electronic circuits.

  2. What are the key specifications of the 2N1804 transistor?

    • The 2N1804 is a general-purpose NPN bipolar junction transistor (BJT) with a maximum collector current of 600mA, a maximum collector-base voltage of 40V, and a maximum power dissipation of 625mW.

  3. How do I identify the pinout of the 2N1804 transistor?

    • The pinout of the 2N1804 transistor is typically identified as the emitter (E), base (B), and collector (C) pins. When viewing the flat side of the transistor with the pins down, the leftmost pin is the emitter, the middle pin is the base, and the rightmost pin is the collector.

  4. What are some common circuit configurations using the 2N1804 transistor?

    • The 2N1804 transistor can be used in common emitter, common collector, and common base configurations for various amplification and switching purposes.

  5. What are the typical operating conditions for the 2N1804 transistor?

    • The 2N1804 transistor is typically operated within a temperature range of -65°C to 200°C and is suitable for low to medium power applications.

  6. How do I calculate the biasing resistors for the 2N1804 transistor in an amplifier circuit?

    • The biasing resistors for the 2N1804 transistor in an amplifier circuit can be calculated using the desired quiescent collector current and the transistor's base-emitter voltage drop.

  7. Can the 2N1804 transistor be used for audio amplification?

    • Yes, the 2N1804 transistor can be used in small-signal audio amplifiers and preamplifier stages due to its moderate power handling capabilities and low noise characteristics.

  8. What are the typical applications of the 2N1804 transistor in electronic projects?

    • The 2N1804 transistor is commonly used in audio amplifiers, signal processing circuits, voltage regulators, and various switching applications.

  9. How do I protect the 2N1804 transistor from overcurrent and overvoltage conditions?

    • Overcurrent and overvoltage protection for the 2N1804 transistor can be implemented using appropriate current-limiting resistors, diodes, and voltage clamping circuits in the overall design.

  10. Where can I find detailed datasheets and application notes for the 2N1804 transistor?

    • Detailed datasheets and application notes for the 2N1804 transistor can be found on semiconductor manufacturer websites, distributor platforms, and electronics component databases.