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1SMA4740 R3G
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1SMA4740 R3G

Product Overview

Category

The 1SMA4740 R3G belongs to the category of Zener diodes.

Use

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

Characteristics

  • Zener voltage: 10V
  • Power dissipation: 1.5W
  • Package type: SMA
  • RoHS compliant

Packaging/Quantity

The 1SMA4740 R3G is typically available in tape and reel packaging with quantities varying based on supplier and customer requirements.

Specifications

  • Zener voltage: 10V
  • Power dissipation: 1.5W
  • Forward voltage: 1.2V
  • Reverse current: 5μA
  • Operating temperature range: -65°C to +150°C

Detailed Pin Configuration

The 1SMA4740 R3G typically has two pins, with the anode connected to the positive side and the cathode connected to the negative side of the circuit.

Functional Features

  • Voltage regulation: The 1SMA4740 R3G maintains a constant voltage across its terminals, providing stability in electronic circuits.
  • Overvoltage protection: It acts as a safeguard against excessive voltage, preventing damage to sensitive components.

Advantages and Disadvantages

Advantages

  • Precise voltage regulation
  • Compact size
  • RoHS compliant

Disadvantages

  • Limited power dissipation capability
  • Sensitive to temperature variations

Working Principles

The 1SMA4740 R3G operates based on the Zener effect, where it allows current to flow in reverse when the voltage reaches the specified Zener voltage, effectively regulating the voltage across its terminals.

Detailed Application Field Plans

The 1SMA4740 R3G is widely used in various applications including: - Voltage regulation in power supplies - Overvoltage protection in automotive electronics - Signal clamping in communication systems

Detailed and Complete Alternative Models

Some alternative models to the 1SMA4740 R3G include: - 1N4740A - BZX55C10 - MMSZ5240B

In conclusion, the 1SMA4740 R3G Zener diode offers precise voltage regulation and overvoltage protection, making it a valuable component in a wide range of electronic applications.

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Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät 1SMA4740 R3G :n soveltamiseen teknisissä ratkaisuissa

  1. What is 1SMA4740 R3G?

    • 1SMA4740 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 1SMA4740 R3G?

    • The maximum peak pulse power is 400 watts for a 10/1000μs waveform.

  3. What is the breakdown voltage of 1SMA4740 R3G?

    • The breakdown voltage is 40 volts.

  4. What are the typical applications for 1SMA4740 R3G?

    • Typical applications include protecting telecommunications equipment, consumer electronics, industrial control systems, and automotive electronics from voltage transients.

  5. What is the operating temperature range of 1SMA4740 R3G?

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

  6. What is the package type of 1SMA4740 R3G?

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

  7. What is the clamping voltage of 1SMA4740 R3G?

    • The clamping voltage is typically 64.5 volts at 10A.

  8. Is 1SMA4740 R3G RoHS compliant?

    • Yes, it is RoHS compliant.

  9. What are the key features of 1SMA4740 R3G?

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

  10. How should 1SMA4740 R3G be mounted on a PCB?

    • It should be mounted with the cathode side facing the PCB and using appropriate soldering techniques to ensure good thermal and electrical performance.