Microsemi Corporation
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1N4749AUR
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1N4749AUR

Product Overview

Category

The 1N4749AUR belongs to the category of Zener diodes.

Use

It is commonly used for voltage regulation and voltage reference applications.

Characteristics

  • Zener voltage: 24V
  • Power dissipation: 1.0W
  • Package type: DO-41
  • RoHS compliant

Packaging/Quantity

The 1N4749AUR is typically available in reels or tubes, with quantities varying based on manufacturer specifications.

Specifications

  • Zener voltage: 24V
  • Power dissipation: 1.0W
  • Maximum forward voltage: 1.2V
  • Maximum reverse current: 5μA
  • Operating temperature range: -65°C to +200°C

Detailed Pin Configuration

The 1N4749AUR follows the standard pin configuration for a DO-41 package, with the anode connected to one end and the cathode to the other.

Functional Features

The 1N4749AUR provides a stable voltage reference or regulation by maintaining a constant voltage across its terminals when operated in the reverse breakdown region.

Advantages

  • Precise voltage regulation
  • Compact size
  • Wide operating temperature range

Disadvantages

  • Limited power dissipation capability
  • Sensitivity to temperature variations

Working Principles

The 1N4749AUR operates based on the principle of the Zener effect, where it maintains a nearly constant voltage across its terminals when reverse biased at the specified Zener voltage.

Detailed Application Field Plans

The 1N4749AUR finds application in various electronic circuits requiring stable voltage references or regulation, including: - Voltage regulators - Overvoltage protection circuits - Voltage clamping circuits

Detailed and Complete Alternative Models

Some alternative models to the 1N4749AUR include: - 1N4733AUR (5.1V Zener voltage) - 1N4740AUR (10V Zener voltage) - 1N4746AUR (18V Zener voltage)

In conclusion, the 1N4749AUR Zener diode offers precise voltage regulation and reference capabilities, making it suitable for a wide range of electronic applications. Its compact size and stable performance make it a popular choice among engineers and designers seeking reliable voltage control solutions.

Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de 1N4749AUR en soluciones técnicas

  1. What is the 1N4749AUR?

    • The 1N4749AUR is a Zener diode with a voltage rating of 24V and a power rating of 1W.

  2. How does the 1N4749AUR work?

    • The 1N4749AUR operates as a voltage regulator by maintaining a constant output voltage across its terminals, even when the input voltage varies.

  3. What are the typical applications of the 1N4749AUR?

    • The 1N4749AUR is commonly used in voltage regulation, voltage reference, and overvoltage protection circuits.

  4. What is the maximum current the 1N4749AUR can handle?

    • The 1N4749AUR has a maximum current rating of 50mA.

  5. What are the key specifications to consider when using the 1N4749AUR in a circuit?

    • Key specifications include the voltage rating, power rating, and maximum current, as well as the temperature coefficient and thermal resistance.

  6. Can the 1N4749AUR be used for reverse polarity protection?

    • Yes, the 1N4749AUR can be used for reverse polarity protection due to its Zener breakdown characteristics.

  7. What are the potential issues to watch out for when using the 1N4749AUR?

    • Thermal considerations, voltage derating, and ensuring proper heat sinking are important factors to consider when using the 1N4749AUR.

  8. Is the 1N4749AUR suitable for automotive applications?

    • Yes, the 1N4749AUR can be used in automotive applications where its voltage regulation and overvoltage protection capabilities are required.

  9. Can multiple 1N4749AUR diodes be connected in series or parallel?

    • Connecting multiple 1N4749AUR diodes in series can be done to achieve higher voltage ratings, but connecting them in parallel is not recommended due to current sharing issues.

  10. Are there any alternative components that can be used in place of the 1N4749AUR?

    • Alternative Zener diodes with similar voltage and power ratings, such as the 1N4733AUR (5.1V) or 1N4750AUR (27V), can be considered as substitutes for the 1N4749AUR.