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MJE802STU
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MJE802STU Encyclopedia Entry

Product Overview

The MJE802STU belongs to the category of power transistors and is commonly used in electronic circuits for amplification and switching applications. This NPN bipolar junction transistor (BJT) exhibits characteristics such as high current capability, low saturation voltage, and fast switching speed. The package type for the MJE802STU is TO-220, and it is typically sold in quantities of one or more.

Specifications

  • Maximum Collector-Emitter Voltage: 40V
  • Maximum Collector Current: 4A
  • DC Current Gain (hFE): 20 - 70
  • Power Dissipation: 40W
  • Transition Frequency: 2MHz

Detailed Pin Configuration

The MJE802STU transistor has three pins: 1. Emitter (E) 2. Base (B) 3. Collector (C)

Functional Features

The MJE802STU offers high current gain and low saturation voltage, making it suitable for power amplifier and switching circuit applications. Its fast switching speed allows for efficient performance in various electronic systems.

Advantages and Disadvantages

Advantages

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

Disadvantages

  • Moderate transition frequency
  • Limited maximum collector-emitter voltage

Working Principles

When a small current flows into the base of the MJE802STU, it controls a larger current flow between the collector and emitter. This principle enables the transistor to amplify signals or act as a switch in electronic circuits.

Detailed Application Field Plans

The MJE802STU is commonly used in the following applications: - Audio amplifiers - Power supplies - Motor control circuits - LED drivers - Switching regulators

Detailed and Complete Alternative Models

Some alternative models to the MJE802STU include: - MJE3055T - TIP31C - 2N3055 - BD139

In conclusion, the MJE802STU is a versatile power transistor with high current capability and fast switching speed, making it suitable for a wide range of electronic applications.

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Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi MJE802STU dalam penyelesaian teknikal

  1. What is the MJE802STU transistor used for?

    • The MJE802STU is a high-voltage, high-speed NPN bipolar junction transistor (BJT) commonly used in power supply and switching applications.

  2. What are the key specifications of the MJE802STU?

    • The MJE802STU has a maximum collector-emitter voltage of 400V, a continuous collector current of 4A, and a power dissipation of 40W.

  3. Can the MJE802STU be used for audio amplifier circuits?

    • Yes, the MJE802STU can be used in audio amplifier circuits, particularly in the output stage due to its high voltage and current capabilities.

  4. How does the MJE802STU compare to other transistors in similar applications?

    • Compared to other transistors, the MJE802STU offers higher voltage and current ratings, making it suitable for demanding power control and switching applications.

  5. What are the typical operating conditions for the MJE802STU?

    • The MJE802STU operates within a temperature range of -65°C to 150°C and is designed for use in various industrial and consumer electronic applications.

  6. Are there any recommended heat sink requirements for the MJE802STU?

    • Yes, for high-power applications or when operating at elevated temperatures, it is recommended to use a suitable heat sink to ensure optimal thermal performance.

  7. Can the MJE802STU be used in motor control circuits?

    • Yes, the MJE802STU can be utilized in motor control circuits, especially in applications where high voltage and current handling capabilities are required.

  8. What are the typical failure modes of the MJE802STU?

    • Common failure modes include thermal overstress, overvoltage breakdown, and excessive current leading to device degradation or failure.

  9. Is the MJE802STU suitable for flyback converter designs?

    • Yes, the MJE802STU can be employed in flyback converter designs, providing efficient power conversion in various power supply applications.

  10. Are there any application notes or reference designs available for the MJE802STU?

    • Yes, several manufacturers provide detailed application notes and reference designs showcasing the use of MJE802STU in various technical solutions, offering valuable design insights and guidelines.