Bourns Inc.
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BD743B-S
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BD743B-S Product Overview

Introduction

BD743B-S is a semiconductor device belonging to the category of power transistors. This product is widely used in electronic circuits for amplification and switching applications due to its unique characteristics and performance.

Basic Information Overview

  • Category: Power Transistor
  • Use: Amplification and Switching
  • Characteristics: High voltage capability, low saturation voltage, high current gain
  • Package: TO-220AB
  • Essence: Silicon NPN Epitaxial Planar Transistor
  • Packaging/Quantity: Typically packaged in reels or tubes containing 50 to 100 units

Specifications

  • Collector-Emitter Voltage (VCEO): 100V
  • Collector Current (IC): 6A
  • Power Dissipation (PD): 40W
  • Transition Frequency (fT): 30MHz
  • Operating Temperature Range: -65°C to 150°C

Detailed Pin Configuration

The BD743B-S transistor has three pins: 1. Emitter (E) 2. Base (B) 3. Collector (C)

Functional Features

  • High voltage capability allows for use in various power applications
  • Low saturation voltage ensures minimal power loss during operation
  • High current gain provides efficient signal amplification

Advantages and Disadvantages

Advantages

  • Suitable for high-power applications
  • Low power dissipation
  • Wide operating temperature range

Disadvantages

  • Limited frequency response compared to specialized RF transistors
  • Relatively larger package size

Working Principles

The BD743B-S 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 BD743B-S is commonly used in the following applications: - Audio amplifiers - Power supply circuits - Motor control systems - LED lighting drivers

Detailed and Complete Alternative Models

Some alternative models to BD743B-S include: - BD743A - BD743C - BD744B - BD745B

In conclusion, the BD743B-S power transistor offers high voltage capability, low saturation voltage, and high current gain, making it suitable for a wide range of amplification and switching applications in electronic circuits.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de BD743B-S en soluciones técnicas

  1. What is BD743B-S?

    • BD743B-S is a high-performance adhesive sealant designed for technical applications requiring strong bonding and sealing properties.

  2. What materials can BD743B-S bond to?

    • BD743B-S can bond to a wide range of materials including metals, plastics, glass, ceramics, and composites.

  3. What is the temperature resistance of BD743B-S?

    • BD743B-S has a high-temperature resistance, withstanding temperatures up to 300°F (150°C).

  4. Is BD743B-S suitable for outdoor applications?

    • Yes, BD743B-S is suitable for outdoor applications as it offers excellent weather and UV resistance.

  5. Can BD743B-S be painted over?

    • Yes, BD743B-S can be painted over once it has fully cured.

  6. What is the curing time of BD743B-S?

    • The curing time of BD743B-S varies depending on factors such as temperature and humidity, but typically ranges from 24 to 72 hours.

  7. Is BD743B-S resistant to chemicals and solvents?

    • Yes, BD743B-S exhibits good resistance to a wide range of chemicals and solvents.

  8. Can BD743B-S be used for structural bonding?

    • Yes, BD743B-S is suitable for structural bonding applications, providing high strength and durability.

  9. Does BD743B-S require special surface preparation before application?

    • It is recommended to clean and dry the surfaces thoroughly before applying BD743B-S for optimal adhesion.

  10. Is BD743B-S compatible with automated dispensing equipment?

    • Yes, BD743B-S is compatible with automated dispensing equipment, making it suitable for high-volume production environments.