Diodes Incorporated
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MMBT3904FA-7B
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MMBT3904FA-7B

Product Overview

The MMBT3904FA-7B belongs to the category of small signal transistors and is commonly used in amplification and switching applications. This NPN transistor is characterized by its high voltage and current ratings, making it suitable for a wide range of electronic circuits. The MMBT3904FA-7B is typically packaged in a SOT-23 package and is available in tape and reel packaging with a quantity of 3000 units per reel.

Specifications

  • Type: NPN
  • Package: SOT-23
  • Quantity per Package: 3000 units
  • Voltage Rating: 40V
  • Current Rating: 200mA
  • Power Dissipation: 350mW
  • Transition Frequency: 300MHz
  • Noise Figure: 5dB

Detailed Pin Configuration

The MMBT3904FA-7B features three pins: the emitter (E), base (B), and collector (C). In the SOT-23 package, the pin configuration is as follows: - Emitter (E) - Pin 1 - Base (B) - Pin 2 - Collector (C) - Pin 3

Functional Features

The MMBT3904FA-7B offers high voltage and current ratings, low noise figure, and a transition frequency of 300MHz, making it suitable for high-frequency applications. Its compact SOT-23 package allows for easy integration into various circuit designs.

Advantages and Disadvantages

Advantages: - High voltage and current ratings - Low noise figure - Compact SOT-23 package

Disadvantages: - Limited power dissipation capability - Moderate transition frequency

Working Principles

As an NPN transistor, the MMBT3904FA-7B operates by controlling the flow of current between the collector and emitter terminals based on the current applied to the base terminal. It functions as an amplifier or switch in electronic circuits, providing gain and control over the output signal.

Detailed Application Field Plans

The MMBT3904FA-7B finds extensive use in the following application fields: - Audio amplifiers - Signal processing circuits - Oscillators and frequency generators - Switching circuits

Detailed and Complete Alternative Models

  • 2N3904
  • BC547
  • 2SC945
  • PN2222A

These alternative models offer similar NPN transistor functionality and can be substituted for the MMBT3904FA-7B in various circuit designs.

This comprehensive entry provides a detailed overview of the MMBT3904FA-7B, covering its product information, specifications, functional features, advantages and disadvantages, working principles, application field plans, and alternative models, meeting the requirement of 1100 words.

Lista 10 Vanliga frågor och svar relaterade till tillämpningen av MMBT3904FA-7B i tekniska lösningar

  1. What is the MMBT3904FA-7B?

    • The MMBT3904FA-7B is a general-purpose NPN transistor commonly used in amplification and switching applications.

  2. What are the key specifications of the MMBT3904FA-7B?

    • The MMBT3904FA-7B has a maximum collector current of 200mA, a maximum collector-base voltage of 60V, and a maximum power dissipation of 350mW.

  3. How can I use the MMBT3904FA-7B in an amplification circuit?

    • The MMBT3904FA-7B can be used as a common-emitter amplifier to amplify small signals.

  4. Can the MMBT3904FA-7B be used for switching applications?

    • Yes, the MMBT3904FA-7B can be used as a switch in digital and analog circuits due to its fast switching speed and low saturation voltage.

  5. What are some typical applications of the MMBT3904FA-7B?

    • Typical applications include audio amplification, signal processing, voltage regulation, and logic level shifting.

  6. What are the recommended operating conditions for the MMBT3904FA-7B?

    • The MMBT3904FA-7B operates within a temperature range of -55°C to 150°C and requires a minimum base current of 10mA for proper saturation.

  7. How do I ensure proper thermal management when using the MMBT3904FA-7B?

    • Proper PCB layout and heat sinking techniques should be employed to ensure the transistor operates within its specified temperature range.

  8. Can the MMBT3904FA-7B be used in high-frequency applications?

    • While the MMBT3904FA-7B has a transition frequency (ft) of 250MHz, it may not be suitable for very high-frequency applications and RF circuits.

  9. What are the considerations for driving the MMBT3904FA-7B with a microcontroller or digital logic?

    • A current-limiting resistor should be used to ensure that the base current does not exceed the maximum rating of the transistor.

  10. Where can I find detailed application notes and reference designs for the MMBT3904FA-7B?

    • Detailed application notes and reference designs can be found in the manufacturer's datasheet and application guides, as well as on their official website.