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BD787

BD787 Product Overview

Introduction

The BD787 is a versatile semiconductor device that belongs to the category of power transistors. This entry provides an in-depth overview of the BD787, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

  • Category: Power Transistor
  • Use: Amplification and Switching Applications
  • Characteristics: High Voltage and Current Capability
  • Package: TO-220AB
  • Essence: Power Amplification
  • Packaging/Quantity: Typically available in reels or tubes containing multiple units

Specifications

The BD787 transistor is designed to operate under the following specifications: - Collector-Emitter Voltage (VCEO): 80V - Collector Current (IC): 8A - Total Power Dissipation (PT): 80W - Transition Frequency (fT): 4MHz - Operating Temperature Range: -65°C to 150°C

Detailed Pin Configuration

The BD787 transistor has a standard TO-220AB package with three pins: 1. Collector (C) 2. Base (B) 3. Emitter (E)

Functional Features

  • High voltage capability
  • Low saturation voltage
  • Fast switching speed
  • Complementary NPN type

Advantages and Disadvantages

Advantages

  • Suitable for high-power applications
  • Fast response time
  • Low saturation voltage

Disadvantages

  • Relatively large package size
  • Limited frequency response compared to smaller signal transistors

Working Principles

The BD787 operates based on the principles of bipolar junction transistors, utilizing the flow of charge carriers to amplify or switch electronic signals.

Detailed Application Field Plans

The BD787 transistor finds extensive use in various applications, including: - Audio amplifiers - Power supply circuits - Motor control systems - Voltage regulators - Electronic ballasts

Detailed and Complete Alternative Models

Several alternative models to the BD787 include: - BD785 - BD786 - BD788 - BD789

These alternatives offer similar characteristics and performance, providing flexibility in design and application.

In conclusion, the BD787 power transistor offers high voltage and current capabilities, making it suitable for a wide range of amplification and switching applications. Its robust specifications, functional features, and diverse application field plans make it a valuable component in electronic circuit design.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av BD787 i tekniska lösningar

  1. What is BD787?

    • BD787 is a high-voltage, high-current Darlington transistor used in various technical solutions.
  2. What are the typical applications of BD787?

    • BD787 is commonly used in power supply circuits, motor control, and general purpose amplification.
  3. What is the maximum voltage and current rating for BD787?

    • The maximum collector-emitter voltage (Vce) is 100V, and the maximum collector current (Ic) is 8A.
  4. How do I connect BD787 in a circuit?

    • BD787 is typically connected as a switch or amplifier, with the base terminal controlling the flow of current between the collector and emitter.
  5. What are the key characteristics of BD787?

    • BD787 has high gain, low saturation voltage, and high DC current gain, making it suitable for power applications.
  6. Can BD787 be used for driving inductive loads?

    • Yes, BD787 is suitable for driving inductive loads such as motors and solenoids due to its high current capability.
  7. What are the thermal considerations when using BD787?

    • It is important to ensure proper heat sinking for BD787 to dissipate the heat generated during operation, especially at higher currents.
  8. Are there any common failure modes for BD787?

    • Overheating due to inadequate heat sinking or excessive current can lead to failure, so proper design and thermal management are crucial.
  9. Can BD787 be used in audio amplifier circuits?

    • Yes, BD787 can be used in audio amplifier circuits, particularly in high-power applications where high current capability is required.
  10. Where can I find the detailed datasheet for BD787?

    • The datasheet for BD787 can be found on the manufacturer's website or through electronic component distributors.