ON Semiconductor
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MMBT3904T
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MMBT3904T Transistor

Introduction

The MMBT3904T is a widely used NPN bipolar junction transistor (BJT) belonging to the category of small signal transistors. It is commonly utilized in various electronic circuits for amplification, switching, and signal processing applications due to its high frequency and low power characteristics.

Basic Information Overview

  • Category: Small Signal Transistor
  • Use: Amplification, Switching, Signal Processing
  • Characteristics: High Frequency, Low Power
  • Package: SOT-23
  • Essence: NPN BJT
  • Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

  • Collector-Base Voltage (VCBO): 60V
  • Collector-Emitter Voltage (VCEO): 40V
  • Emitter-Base Voltage (VEBO): 6V
  • Collector Current (IC): 200mA
  • Power Dissipation (PD): 350mW
  • Transition Frequency (fT): 250MHz
  • Operating Temperature Range: -55°C to 150°C

Detailed Pin Configuration

The MMBT3904T transistor has three pins: 1. Emitter (E) 2. Base (B) 3. Collector (C)

Functional Features

  • High transition frequency for improved high-frequency performance
  • Low power dissipation for energy-efficient operation
  • Fast switching speed for rapid signal processing

Advantages and Disadvantages

Advantages

  • High frequency capability
  • Small package size
  • Suitable for low power applications

Disadvantages

  • Limited collector current compared to other transistors
  • Relatively low voltage ratings

Working Principles

The MMBT3904T operates based on the principles of bipolar junction transistors, where the flow of current between the emitter and collector is controlled by the base current. By modulating the base current, the transistor can amplify or switch electronic signals.

Detailed Application Field Plans

The MMBT3904T transistor finds extensive use in the following applications: - Audio Amplifiers - Oscillators - Switching Circuits - Signal Processing Circuits - RF Amplifiers

Detailed and Complete Alternative Models

Some alternative models to the MMBT3904T include: - 2N3904 - BC547 - 2SC945 - PN2222A

In conclusion, the MMBT3904T transistor is a versatile component with high-frequency capabilities, making it suitable for a wide range of amplification and signal processing applications in electronic circuits.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van MMBT3904T in technische oplossingen

Sure, here are 10 common questions and answers related to the application of MMBT3904T:

  1. What is MMBT3904T?

    • MMBT3904T is a general-purpose NPN bipolar junction transistor (BJT) commonly used in amplification and switching applications.

  2. What are the key features of MMBT3904T?

    • MMBT3904T features a maximum collector current of 200mA, a maximum power dissipation of 350mW, and a maximum voltage of 40V.

  3. What are the typical applications of MMBT3904T?

    • MMBT3904T is commonly used in audio amplifiers, signal amplification, switching circuits, and as a general-purpose transistor in electronic circuits.

  4. What are the important parameters to consider when using MMBT3904T in a circuit?

    • Key parameters to consider include the collector current, base current, voltage ratings, and frequency response for amplification applications.

  5. How do I select the appropriate biasing and operating conditions for MMBT3904T?

    • The biasing and operating conditions depend on the specific application, but typically involve selecting appropriate resistor values for the base biasing and ensuring that the collector current and voltage ratings are within safe limits.

  6. Can MMBT3904T be used for low-power switching applications?

    • Yes, MMBT3904T can be used for low-power switching applications such as turning on and off small loads in electronic circuits.

  7. What are the typical voltage and current gain characteristics of MMBT3904T?

    • The voltage gain (hfe) of MMBT3904T typically ranges from 100 to 300, and the current gain (hfe) typically ranges from 50 to 300.

  8. Are there any specific layout considerations when using MMBT3904T in a circuit?

    • It's important to minimize lead lengths, provide adequate heat sinking if necessary, and ensure proper grounding and decoupling for stable operation.

  9. Can MMBT3904T be used in high-frequency applications?

    • While MMBT3904T has limited high-frequency performance compared to specialized RF transistors, it can still be used in moderate frequency applications with appropriate design considerations.

  10. Where can I find detailed information about the electrical characteristics and application notes for MMBT3904T?

    • Detailed information about MMBT3904T can be found in the datasheet provided by the manufacturer, which includes electrical characteristics, recommended operating conditions, and application notes for various circuit configurations.