ON Semiconductor
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2N7002
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2N7002 Transistor

Product Overview

The 2N7002 is a small signal N-channel MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) belonging to the category of electronic components. It is commonly used in various electronic circuits for switching and amplification purposes due to its low power consumption, high input impedance, and fast switching speed. The transistor is available in a variety of packages such as SOT-23, SOT-323, and SC-70, making it suitable for different applications.

Basic Information

  • Category: Electronic Component
  • Use: Switching and Amplification
  • Characteristics: Low Power Consumption, High Input Impedance, Fast Switching Speed
  • Package: SOT-23, SOT-323, SC-70
  • Essence: N-channel MOSFET
  • Packaging/Quantity: Typically available in reels of 3000 units

Specifications

  • Voltage Rating: 60V
  • Continuous Drain Current: 115mA
  • Power Dissipation: 200mW
  • Threshold Voltage (VGSth): 1.0V - 2.5V
  • On-State Resistance (RDS(on)): 5Ω - 7Ω

Detailed Pin Configuration

The 2N7002 transistor typically consists of three pins: 1. Gate (G): Input terminal for controlling the flow of current through the transistor. 2. Drain (D): Output terminal where the current exits the transistor. 3. Source (S): Terminal through which the current enters the transistor.

Functional Features

  • Low Power Consumption: Suitable for battery-operated devices and low-power applications.
  • High Input Impedance: Allows for easy interfacing with microcontrollers and other digital circuits.
  • Fast Switching Speed: Enables quick response in switching applications.

Advantages and Disadvantages

Advantages

  • Low power consumption makes it suitable for portable and battery-operated devices.
  • High input impedance allows for easy integration with digital circuits.
  • Fast switching speed enables quick response in switching applications.

Disadvantages

  • Limited voltage and current handling capabilities compared to larger power transistors.
  • Susceptible to damage from static electricity if not handled properly.

Working Principles

The 2N7002 operates based on the principle of field-effect modulation. When a voltage is applied to the gate terminal, it creates an electric field that controls the flow of current between the drain and source terminals. This modulation of the electric field allows the transistor to act as a switch or an amplifier depending on the application.

Detailed Application Field Plans

The 2N7002 transistor finds extensive use in various electronic applications, including but not limited to: - Switching Circuits: Used to control the flow of current in digital and analog circuits. - Amplification Circuits: Employed to amplify weak signals in audio and sensor applications. - Voltage Level Shifting: Facilitates interfacing between devices operating at different voltage levels.

Detailed and Complete Alternative Models

Some alternative models to the 2N7002 transistor include: - BS170: Similar N-channel MOSFET with higher voltage and current ratings. - IRLML2502: Low threshold voltage MOSFET suitable for low-voltage applications. - DMN10H220SK3: MOSFET with enhanced thermal performance for high-power applications.

In conclusion, the 2N7002 transistor is a versatile electronic component with wide-ranging applications in the field of electronics. Its compact size, low power consumption, and fast switching speed make it an ideal choice for various circuit designs.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací 2N7002 v technických řešeních

  1. What is the 2N7002 transistor used for?

    • The 2N7002 is commonly used as a small signal N-channel MOSFET in various electronic circuits.

  2. What are the typical applications of the 2N7002 transistor?

    • It is often used in switching and amplification circuits, such as low-power switching applications, level shifting, and signal amplification.

  3. What is the maximum drain-source voltage rating of the 2N7002?

    • The maximum drain-source voltage rating is typically around 60V, making it suitable for low voltage applications.

  4. What is the maximum continuous drain current for the 2N7002?

    • The maximum continuous drain current is usually around 200mA, making it suitable for low power applications.

  5. What are the key characteristics of the 2N7002 that make it suitable for switching applications?

    • Its low threshold voltage, low on-resistance, and fast switching speed make it ideal for switching applications.

  6. Can the 2N7002 be used for level shifting applications?

    • Yes, the 2N7002 can be used for level shifting due to its low threshold voltage and compatibility with low voltage systems.

  7. What are the typical input and output capacitances of the 2N7002?

    • The input capacitance is typically around 20pF, and the output capacitance is around 30pF.

  8. Is the 2N7002 suitable for use in high-frequency applications?

    • While it can be used in moderate frequency applications, it may not be ideal for high-frequency applications due to its inherent capacitance and other characteristics.

  9. What are some common alternatives to the 2N7002 for low-power switching applications?

    • Alternatives include the BS170, 2N7000, and NDP6020P, among others.

  10. Are there any special considerations for driving the 2N7002 in a circuit?

    • It's important to ensure that the gate-source voltage does not exceed the specified maximum ratings to avoid damaging the transistor. Additionally, attention should be paid to proper biasing and drive levels for optimal performance.