Vishay Semiconductor Diodes Division
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MBRB745HE3/81
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MBRB745HE3/81

Product Overview

Category

The MBRB745HE3/81 belongs to the category of Schottky Rectifier Diodes.

Use

It is commonly used in power supply and voltage regulation applications.

Characteristics

  • High efficiency
  • Low forward voltage drop
  • Fast switching speed
  • Low power loss

Package

The MBRB745HE3/81 is typically available in a TO-263AB package.

Essence

This diode is essential for converting alternating current (AC) to direct current (DC) with minimal power loss.

Packaging/Quantity

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

Specifications

  • Forward Voltage Drop: 0.55V
  • Reverse Voltage: 45V
  • Forward Current: 7A
  • Reverse Recovery Time: 20ns
  • Operating Temperature Range: -65°C to 175°C

Detailed Pin Configuration

The MBRB745HE3/81 has a standard pin configuration with two leads, anode, and cathode.

Functional Features

  • High current capability
  • Low thermal resistance
  • Excellent high-temperature stability
  • Low leakage current

Advantages and Disadvantages

Advantages

  • High efficiency
  • Fast switching speed
  • Low power loss
  • Reliable performance at high temperatures

Disadvantages

  • Higher cost compared to standard rectifier diodes
  • Sensitive to reverse voltage spikes

Working Principles

The MBRB745HE3/81 operates based on the Schottky barrier principle, where the metal-semiconductor junction allows for faster switching and lower forward voltage drop compared to conventional PN-junction diodes.

Detailed Application Field Plans

Power Supplies

The diode can be used in various power supply designs, including switch-mode power supplies and linear regulators.

Voltage Regulation

It is suitable for voltage regulation circuits in electronic devices and equipment.

Motor Drive Circuits

The diode can be integrated into motor drive circuits for efficient power management.

Detailed and Complete Alternative Models

  • MBR745
  • MBR745G
  • MBR745P
  • MBR745S

In conclusion, the MBRB745HE3/81 Schottky Rectifier Diode offers high efficiency, fast switching speed, and low power loss, making it suitable for various power supply and voltage regulation applications. While it may have a higher cost and sensitivity to reverse voltage spikes, its advantages outweigh the disadvantages in many scenarios.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací MBRB745HE3/81 v technických řešeních

  1. What is the MBRB745HE3/81 diode used for?

    • The MBRB745HE3/81 diode is commonly used in rectification and power management applications due to its high efficiency and low forward voltage drop.

  2. What are the key specifications of the MBRB745HE3/81 diode?

    • The MBRB745HE3/81 diode has a maximum average forward current of 7.5A, a reverse voltage of 45V, and a low forward voltage drop.

  3. Can the MBRB745HE3/81 diode be used in high-frequency applications?

    • Yes, the MBRB745HE3/81 diode is suitable for high-frequency applications due to its fast switching characteristics.

  4. Is the MBRB745HE3/81 diode suitable for automotive applications?

    • Yes, the MBRB745HE3/81 diode is often used in automotive electronics for various power management functions.

  5. What are the typical thermal characteristics of the MBRB745HE3/81 diode?

    • The MBRB745HE3/81 diode has low thermal resistance and is designed to operate within a wide temperature range, making it suitable for demanding environments.

  6. Does the MBRB745HE3/81 diode require any special heat sinking or mounting considerations?

    • While the MBRB745HE3/81 diode has good thermal performance, proper heat sinking and mounting techniques should be followed to ensure optimal reliability and performance.

  7. Can the MBRB745HE3/81 diode be used in parallel to increase current handling capability?

    • Yes, the MBRB745HE3/81 diode can be used in parallel to increase the overall current handling capability in high-power applications.

  8. Are there any application notes or reference designs available for using the MBRB745HE3/81 diode in specific technical solutions?

    • Yes, manufacturers often provide application notes and reference designs for utilizing the MBRB745HE3/81 diode in various technical solutions, which can be found in the datasheet or on their website.

  9. What are the potential failure modes of the MBRB745HE3/81 diode and how can they be mitigated?

    • Common failure modes include overcurrent, overvoltage, and thermal stress. Proper circuit protection, derating guidelines, and thermal management can help mitigate these risks.

  10. Where can I find reliable sources for purchasing the MBRB745HE3/81 diode and related technical support?

    • Authorized distributors and manufacturers' websites are reliable sources for purchasing the MBRB745HE3/81 diode, as well as accessing technical support and documentation.