Vishay Semiconductor Diodes Division
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MBRB745-E3/81
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MBRB745-E3/81

Product Overview

Category

The MBRB745-E3/81 belongs to the category of Schottky Barrier Rectifiers.

Use

It is commonly used in power supply applications, voltage clamping, and reverse polarity protection.

Characteristics

  • Low forward voltage drop
  • High current capability
  • Fast switching speed
  • High temperature operation

Package

The MBRB745-E3/81 is typically available in a TO-263AB (D2PAK) package.

Essence

This rectifier 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

  • Maximum Average Forward Current: 7.5A
  • Peak Forward Surge Current: 125A
  • Reverse Voltage: 45V
  • Operating Temperature Range: -65°C to +175°C

Detailed Pin Configuration

The MBRB745-E3/81 has three pins: 1. Anode 2. Cathode 3. Gate (for some models)

Functional Features

  • Low power loss
  • High efficiency
  • High surge capability
  • Guard ring for enhanced ruggedness and long-term reliability

Advantages and Disadvantages

Advantages

  • Fast switching speed reduces switching losses
  • Low forward voltage drop minimizes power dissipation
  • High surge capability ensures robust performance in transient conditions

Disadvantages

  • Higher cost compared to standard rectifiers
  • Sensitive to reverse voltage spikes

Working Principles

The MBRB745-E3/81 operates based on the Schottky barrier principle, where a metal-semiconductor junction forms a low forward voltage drop and fast switching characteristics.

Detailed Application Field Plans

The MBRB745-E3/81 is widely used in: - Switching power supplies - DC-DC converters - Reverse polarity protection circuits - Voltage clamping applications

Detailed and Complete Alternative Models

Some alternative models to the MBRB745-E3/81 include: - MBRB745-E3/45 - MBRB745-E3/100 - MBRB745-E3/120

In conclusion, the MBRB745-E3/81 Schottky Barrier Rectifier offers high efficiency and fast switching characteristics, making it suitable for various power supply and voltage protection applications.

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Texniki həllərdə MBRB745-E3/81 tətbiqi ilə bağlı 10 ümumi sual və cavabı sadalayın

  1. What is the MBRB745-E3/81 diode used for?

    • The MBRB745-E3/81 diode is commonly used as a rectifier in power supply and voltage regulation applications.

  2. What are the key specifications of the MBRB745-E3/81 diode?

    • The MBRB745-E3/81 diode has a maximum average forward current of 7.5A, a reverse voltage of 45V, and a low forward voltage drop.

  3. Can the MBRB745-E3/81 diode be used in high-frequency applications?

    • Yes, the MBRB745-E3/81 diode is suitable for high-frequency switching due to its fast recovery time and low reverse recovery charge.

  4. Is the MBRB745-E3/81 diode suitable for automotive applications?

    • Yes, the MBRB745-E3/81 diode is often used in automotive electronics for various functions such as voltage regulation and power management.

  5. What are the typical thermal characteristics of the MBRB745-E3/81 diode?

    • The MBRB745-E3/81 diode has a low thermal resistance and is designed to operate within a wide temperature range, making it suitable for demanding environments.

  6. Does the MBRB745-E3/81 diode require a heatsink for operation?

    • Depending on the application and operating conditions, a heatsink may be recommended to ensure optimal thermal performance and reliability.

  7. Can the MBRB745-E3/81 diode be used in parallel to increase current handling capacity?

    • Yes, the MBRB745-E3/81 diode can be used in parallel to increase the overall current handling capacity while maintaining balanced current sharing.

  8. What are the typical failure modes of the MBRB745-E3/81 diode?

    • Common failure modes include overcurrent stress, thermal overstress, and voltage transients. Proper design considerations and protection circuits can mitigate these risks.

  9. Are there any specific layout considerations when using the MBRB745-E3/81 diode in a PCB design?

    • It's important to minimize parasitic inductance and optimize the layout for efficient heat dissipation to ensure reliable performance of the diode.

  10. Where can I find detailed application notes and reference designs for the MBRB745-E3/81 diode?

    • Detailed application notes and reference designs for the MBRB745-E3/81 diode can be found in the product datasheet, manufacturer's website, or technical support resources.