Taiwan Semiconductor Corporation
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1SMA4742HR3G
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1SMA4742HR3G

Product Overview

Category

The 1SMA4742HR3G belongs to the category of semiconductor devices, specifically a Zener diode.

Use

It is commonly used for voltage regulation and transient suppression in electronic circuits.

Characteristics

  • Voltage: 12V
  • Power Dissipation: 1.5W
  • Package: SMA
  • Reverse Standoff Voltage: 10.5V
  • Forward Voltage: 1.5V
  • Operating Temperature Range: -65°C to +175°C

Packaging/Quantity

The 1SMA4742HR3G is typically available in tape and reel packaging with quantities varying based on supplier specifications.

Specifications

  • Zener Voltage: 11.4V to 12.6V
  • Maximum Reverse Leakage Current: 0.1µA
  • Maximum Zener Impedance: 20Ω
  • Maximum Surge Current: 40A

Detailed Pin Configuration

The 1SMA4742HR3G has two pins, anode, and cathode, which are denoted by the standard diode symbol.

Functional Features

  • Precise voltage regulation
  • Transient voltage suppression
  • Low reverse leakage current
  • High surge current capability

Advantages

  • Reliable voltage regulation
  • Robust transient protection
  • Wide operating temperature range
  • Compact SMA package

Disadvantages

  • Limited power dissipation capability
  • Higher cost compared to standard diodes

Working Principles

The 1SMA4742HR3G operates based on the Zener effect, where it maintains a nearly constant voltage across its terminals when reverse biased.

Detailed Application Field Plans

The 1SMA4742HR3G finds applications in various electronic systems such as: - Voltage regulators - Overvoltage protection circuits - Power supplies - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models to the 1SMA4742HR3G include: - 1N4742A - BZX85C12 - MMSZ5245B

In conclusion, the 1SMA4742HR3G Zener diode offers precise voltage regulation and transient suppression, making it suitable for a wide range of electronic applications. Its compact package and reliable performance make it a popular choice among design engineers.

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Énumérez 10 questions et réponses courantes liées à l'application de 1SMA4742HR3G dans les solutions techniques

Sure, here are 10 common questions and answers related to the application of 1SMA4742HR3G in technical solutions:

  1. What is the maximum reverse stand-off voltage of 1SMA4742HR3G?

    • The maximum reverse stand-off voltage of 1SMA4742HR3G is 42V.

  2. What is the peak pulse power dissipation of 1SMA4742HR3G?

    • The peak pulse power dissipation of 1SMA4742HR3G is 400W.

  3. What is the typical junction capacitance of 1SMA4742HR3G?

    • The typical junction capacitance of 1SMA4742HR3G is 150pF.

  4. What are the typical applications for 1SMA4742HR3G?

    • 1SMA4742HR3G is commonly used in surge protection, voltage clamping, and transient voltage suppression applications.

  5. What is the operating temperature range of 1SMA4742HR3G?

    • The operating temperature range of 1SMA4742HR3G is -55°C to +150°C.

  6. What is the forward voltage drop of 1SMA4742HR3G at a specified current?

    • The forward voltage drop of 1SMA4742HR3G at a specified current is typically 0.9V at 10A.

  7. What package type does 1SMA4742HR3G come in?

    • 1SMA4742HR3G is available in a DO-214AC (SMA) package.

  8. Is 1SMA4742HR3G RoHS compliant?

    • Yes, 1SMA4742HR3G is RoHS compliant.

  9. What are the key features of 1SMA4742HR3G?

    • Key features of 1SMA4742HR3G include low profile package, excellent clamping capability, and fast response time.

  10. Can 1SMA4742HR3G be used in automotive applications?

    • Yes, 1SMA4742HR3G is suitable for use in automotive electronics, such as in-vehicle networks and electronic control units.

I hope these questions and answers are helpful for your technical solutions! If you need further assistance, feel free to ask.