ON Semiconductor
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MMBTA28
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MMBTA28 Transistor

Product Overview

Category

The MMBTA28 transistor belongs to the category of small signal NPN transistors.

Use

It is commonly used for amplification and switching of electronic signals in various applications.

Characteristics

  • Small size
  • Low power consumption
  • High gain
  • Fast switching speed

Package

The MMBTA28 transistor is typically available in a SOT-23 package.

Essence

This transistor is essential for electronic circuit design, especially in low-power applications.

Packaging/Quantity

The MMBTA28 transistor is usually packaged in reels or tubes, with quantities varying based on manufacturer specifications.

Specifications

  • Collector-Base Voltage (VCBO): 75V
  • Collector-Emitter Voltage (VCEO): 40V
  • Emitter-Base Voltage (VEBO): 6V
  • Collector Current (IC): 600mA
  • Power Dissipation (PD): 350mW
  • Transition Frequency (fT): 250MHz

Detailed Pin Configuration

The MMBTA28 transistor has three pins: collector, base, and emitter. The pin configuration is as follows: - Collector (C) - Pin 1 - Base (B) - Pin 2 - Emitter (E) - Pin 3

Functional Features

  • High voltage capability
  • Low leakage current
  • Fast switching speed
  • Low saturation voltage

Advantages and Disadvantages

Advantages

  • Small size allows for compact circuit designs
  • High gain makes it suitable for amplification applications
  • Fast switching speed enables efficient signal processing

Disadvantages

  • Limited power handling capacity
  • Susceptible to thermal issues due to its small size

Working Principles

The MMBTA28 transistor operates based on the principles of amplification and control of electronic signals. When biased correctly, it allows for controlled current flow between its terminals, enabling signal amplification and switching.

Detailed Application Field Plans

The MMBTA28 transistor finds extensive use in the following application fields: - Audio amplifiers - Signal processing circuits - Switching circuits - Oscillator circuits - Sensor interfaces

Detailed and Complete Alternative Models

Some alternative models to the MMBTA28 transistor include: - 2N3904 - BC547 - 2N2222 - PN2222A

In conclusion, the MMBTA28 transistor is a versatile component with wide-ranging applications in electronic circuit design. Its small size, high gain, and fast switching speed make it an essential building block for various low-power electronic systems.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací MMBTA28 v technických řešeních

  1. What is MMBTA28?

    • MMBTA28 is a general-purpose NPN bipolar junction transistor commonly used in electronic circuits for amplification and switching applications.

  2. What are the typical applications of MMBTA28?

    • MMBTA28 is commonly used in audio amplifiers, signal processing circuits, and as a switch in digital logic circuits.

  3. What are the key electrical characteristics of MMBTA28?

    • The key electrical characteristics of MMBTA28 include a maximum collector current (Ic) of 600mA, a maximum collector-base voltage (Vcb) of 40V, and a maximum DC current gain (hfe) of 100-300.

  4. How do I identify the pin configuration of MMBTA28?

    • The pin configuration of MMBTA28 is typically identified as the emitter (E), base (B), and collector (C) pins, with the flat side of the transistor facing towards you and the pins pointing down.

  5. What are the recommended operating conditions for MMBTA28?

    • MMBTA28 is typically operated within a temperature range of -55°C to 150°C and should be used within its specified maximum ratings for current, voltage, and power dissipation.

  6. Can MMBTA28 be used for high-frequency applications?

    • While MMBTA28 can be used for moderate frequency applications, it may not be suitable for very high-frequency applications due to its transition frequency and capacitance characteristics.

  7. What are some common alternatives to MMBTA28?

    • Common alternatives to MMBTA28 include 2N2222, BC337, and BC547, which have similar characteristics and can be used as substitutes in many applications.

  8. How do I calculate the biasing resistors for MMBTA28 in an amplifier circuit?

    • The biasing resistors for MMBTA28 in an amplifier circuit can be calculated using the desired quiescent collector current and the transistor's base-emitter voltage drop.

  9. What are the considerations for driving inductive loads with MMBTA28?

    • When driving inductive loads with MMBTA28, it's important to include a flyback diode to protect the transistor from voltage spikes generated by the inductive load when it is switched off.

  10. Are there any specific layout considerations for using MMBTA28 in a PCB design?

    • It's important to minimize the length of the traces carrying high-frequency signals, provide adequate heat sinking for the transistor, and ensure proper grounding and decoupling to optimize the performance of MMBTA28 in a PCB design.