Taiwan Semiconductor Corporation
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1SMA4744HR3G
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1SMA4744HR3G

Product Overview

Category

The 1SMA4744HR3G belongs to the category of semiconductor devices, specifically a Zener diode.

Use

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

Characteristics

  • Voltage Regulation: The 1SMA4744HR3G provides stable voltage output under varying load conditions.
  • Transient Voltage Suppression: It protects sensitive electronic components from voltage spikes and surges.
  • High Power Dissipation: Capable of handling high power dissipation levels.
  • Temperature Stability: Maintains stable performance across a wide temperature range.

Package

The 1SMA4744HR3G is typically available in a surface mount package, such as SMA or SMB.

Essence

The essence of this product lies in its ability to regulate voltage and protect electronic circuits from transient voltage events.

Packaging/Quantity

It is commonly supplied in reels or tubes, with quantities varying based on manufacturer specifications.

Specifications

  • Voltage: 15V
  • Power Dissipation: 1.5W
  • Zener Voltage Tolerance: ±5%
  • Operating Temperature Range: -55°C to +150°C
  • Package Type: SMA

Detailed Pin Configuration

The 1SMA4744HR3G typically has two pins, with the anode and cathode connections clearly marked on the package.

Functional Features

  • Voltage Regulation: Provides a stable output voltage even with varying input voltages.
  • Transient Voltage Suppression: Safeguards against voltage spikes and surges, protecting downstream components.
  • Fast Response Time: Rapidly clamps transient voltages to safe levels.

Advantages

  • Reliability: Offers consistent performance over time and temperature variations.
  • Space-Saving: Its compact surface mount package saves board space.
  • Protection: Effectively shields sensitive components from voltage transients.

Disadvantages

  • Reverse Leakage Current: Exhibits some reverse leakage current at lower voltages.
  • Voltage Drop: Incurs a small voltage drop during normal operation.

Working Principles

The 1SMA4744HR3G operates based on the Zener effect, where it maintains a nearly constant voltage across its terminals when reverse-biased.

Detailed Application Field Plans

Voltage Regulation

In power supply circuits, the 1SMA4744HR3G can be used to stabilize the output voltage, ensuring a consistent supply to downstream components.

Transient Voltage Suppression

It finds application in protecting sensitive integrated circuits, such as microcontrollers and sensors, from voltage spikes induced by lightning or electromagnetic interference.

Overvoltage Protection

In automotive electronics, it serves to safeguard against overvoltage events that could damage critical systems.

Detailed and Complete Alternative Models

  • 1N4744A: A through-hole Zener diode with similar voltage and power dissipation ratings.
  • BZX85C15: Another surface mount Zener diode offering comparable voltage regulation capabilities.

In conclusion, the 1SMA4744HR3G Zener diode is a versatile component widely used for voltage regulation and transient voltage suppression in various electronic applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací 1SMA4744HR3G v technických řešeních

Sure, here are 10 common questions and answers related to the application of 1SMA4744HR3G in technical solutions:

  1. What is the maximum reverse stand-off voltage of 1SMA4744HR3G?

    • The maximum reverse stand-off voltage of 1SMA4744HR3G is 36V.

  2. What is the peak pulse power dissipation of 1SMA4744HR3G?

    • The peak pulse power dissipation of 1SMA4744HR3G is 400W.

  3. What are the typical applications for 1SMA4744HR3G?

    • Typical applications for 1SMA4744HR3G include overvoltage and surge protection in various electronic circuits such as power supplies, telecommunications equipment, and automotive electronics.

  4. What is the operating temperature range of 1SMA4744HR3G?

    • The operating temperature range of 1SMA4744HR3G is -55°C to +150°C.

  5. What is the forward voltage drop of 1SMA4744HR3G at a specified current?

    • The forward voltage drop of 1SMA4744HR3G at a specified current is typically 3.5V at 10A.

  6. Does 1SMA4744HR3G have a low leakage current?

    • Yes, 1SMA4744HR3G has a low leakage current, typically less than 1µA at the stand-off voltage.

  7. Is 1SMA4744HR3G suitable for high-reliability applications?

    • Yes, 1SMA4744HR3G is suitable for high-reliability applications due to its robust construction and performance characteristics.

  8. Can 1SMA4744HR3G be used for ESD protection?

    • Yes, 1SMA4744HR3G can be used for electrostatic discharge (ESD) protection in sensitive electronic components and circuits.

  9. What is the package type of 1SMA4744HR3G?

    • 1SMA4744HR3G is available in a DO-214AC (SMA) package.

  10. Are there any specific layout considerations when using 1SMA4744HR3G in a circuit?

    • It is recommended to minimize the length of the PCB traces connecting 1SMA4744HR3G to the circuit to reduce parasitic inductance and ensure optimal performance.

I hope these questions and answers provide the information you were looking for! If you have any more questions, feel free to ask.