Taiwan Semiconductor Corporation
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1SMA4748 R3G
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1SMA4748 R3G

Product Overview

Category

The 1SMA4748 R3G belongs to the category of surface mount silicon zener diodes.

Use

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

Characteristics

  • Zener voltage: 22V
  • Power dissipation: 1.5W
  • Package type: SMA
  • RoHS compliant

Packaging/Quantity

The 1SMA4748 R3G is typically available in tape and reel packaging with a quantity of 3000 units per reel.

Specifications

  • Zener Voltage (Vz): 22V
  • Power Dissipation (Pd): 1.5W
  • Operating Temperature Range: -65°C to +150°C
  • Forward Voltage: 1.5V
  • Reverse Leakage Current: 5µA

Detailed Pin Configuration

The 1SMA4748 R3G has two pins, with the anode connected to the positive side and the cathode connected to the negative side of the circuit.

Functional Features

  • Precise voltage regulation
  • Transient suppression
  • High power dissipation capability
  • RoHS compliant

Advantages and Disadvantages

Advantages

  • Reliable voltage regulation
  • High power dissipation
  • RoHS compliant

Disadvantages

  • Limited voltage range

Working Principles

The 1SMA4748 R3G operates based on the principle of the Zener effect, where it maintains a constant voltage across its terminals when reverse-biased.

Detailed Application Field Plans

The 1SMA4748 R3G is widely used in: - Voltage regulation in power supplies - Surge protection in communication equipment - Overvoltage protection in automotive electronics

Detailed and Complete Alternative Models

Some alternative models to the 1SMA4748 R3G include: - 1N4748A - BZX85C22 - MMSZ5226B

In conclusion, the 1SMA4748 R3G is a surface mount silicon zener diode with a zener voltage of 22V and a power dissipation of 1.5W. It is commonly used for voltage regulation and transient suppression in various electronic circuits, offering precise voltage regulation and high power dissipation capabilities. However, it has a limited voltage range. Its working principle is based on the Zener effect, and it finds applications in power supplies, communication equipment, and automotive electronics. Alternative models such as 1N4748A, BZX85C22, and MMSZ5226B can also be considered for similar applications.

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רשום 10 שאלות ותשובות נפוצות הקשורות ליישום של 1SMA4748 R3G בפתרונות טכניים

  1. What is 1SMA4748 R3G?

    • 1SMA4748 R3G is a surface mount, high-power transient voltage suppressor diode designed to protect sensitive electronics from voltage transients induced by lightning, inductive load switching, and electrostatic discharge.

  2. What is the maximum peak pulse power of 1SMA4748 R3G?

    • The maximum peak pulse power is 500 watts for a 10/1000μs waveform.

  3. What is the breakdown voltage of 1SMA4748 R3G?

    • The breakdown voltage is 48 volts.

  4. What are the typical applications of 1SMA4748 R3G?

    • Typical applications include protection of telecommunications equipment, portable electronics, automotive systems, and industrial control systems.

  5. What is the operating temperature range of 1SMA4748 R3G?

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

  6. What is the reverse stand-off voltage of 1SMA4748 R3G?

    • The reverse stand-off voltage is 48 volts.

  7. What is the clamping voltage of 1SMA4748 R3G?

    • The clamping voltage is typically 77.4 volts at 10A.

  8. What is the package type of 1SMA4748 R3G?

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

  9. What are the key features of 1SMA4748 R3G?

    • Key features include low clamping voltage, fast response time, and high surge capability.

  10. How should 1SMA4748 R3G be mounted on a PCB?

    • It should be mounted using appropriate techniques to minimize thermal resistance and mechanical stress.

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