Microsemi Corporation
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1N4738AUR
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1N4738AUR

Product Overview

Category

The 1N4738AUR belongs to the category of semiconductor devices, specifically within the family of Zener diodes.

Use

This product is commonly used for voltage regulation and stabilization in electronic circuits.

Characteristics

  • Zener voltage: 8.2V
  • Power dissipation: 1.3W
  • Package type: DO-41
  • Operating temperature range: -65°C to +200°C
  • Storage temperature range: -65°C to +200°C

Packaging/Quantity

The 1N4738AUR is typically available in reels or bulk packaging, with quantities varying based on supplier and customer requirements.

Specifications

  • Zener voltage: 8.2V
  • Power dissipation: 1.3W
  • Maximum forward voltage: 1.1V
  • Reverse current: 5μA
  • Temperature coefficient: 0.05%/°C

Detailed Pin Configuration

The 1N4738AUR has a standard DO-41 package with two leads. The anode is connected to the positive terminal, while the cathode is connected to the negative terminal.

Functional Features

The primary function of the 1N4738AUR is to maintain a constant voltage across its terminals, regardless of changes in current or input voltage.

Advantages and Disadvantages

Advantages

  • Precise voltage regulation
  • High power dissipation capability
  • Wide operating temperature range

Disadvantages

  • Limited voltage options compared to programmable regulators
  • Susceptible to thermal runaway if not properly heatsinked

Working Principles

The 1N4738AUR operates based on the Zener effect, where it maintains a nearly constant voltage drop across its terminals when reverse-biased.

Detailed Application Field Plans

The 1N4738AUR finds applications in various electronic circuits requiring stable voltage references, such as: - Voltage regulators - Power supplies - Signal clamping circuits

Detailed and Complete Alternative Models

Some alternative models to the 1N4738AUR include: - 1N4739AUR (Zener voltage: 9.1V) - 1N4740AUR (Zener voltage: 10V) - BZX55C8V2 (Zener voltage: 8.2V)

In conclusion, the 1N4738AUR Zener diode serves as a crucial component in electronic circuits requiring precise voltage regulation and stabilization. Its characteristics, specifications, and application versatility make it a valuable asset in various industries.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de 1N4738AUR en soluciones técnicas

  1. What is 1N4738AUR?

    • 1N4738AUR is a Zener diode with a voltage rating of 8.2V.

  2. What are the typical applications of 1N4738AUR?

    • It is commonly used in voltage regulation, voltage reference, and overvoltage protection circuits.

  3. What is the maximum power dissipation of 1N4738AUR?

    • The maximum power dissipation is 1.3W.

  4. What is the operating temperature range for 1N4738AUR?

    • The operating temperature range is typically -65°C to +200°C.

  5. What is the forward voltage drop of 1N4738AUR?

    • The forward voltage drop is around 1.2V.

  6. How does 1N4738AUR provide voltage regulation?

    • It maintains a constant output voltage across its terminals when operated in reverse breakdown region.

  7. Can 1N4738AUR be used for precision voltage references?

    • While it can provide a stable voltage reference, it may not be suitable for precision applications due to its tolerance.

  8. What are the key considerations when using 1N4738AUR in overvoltage protection circuits?

    • Proper current limiting and thermal management are important to ensure effective overvoltage protection.

  9. Is 1N4738AUR suitable for high-frequency applications?

    • It may not be ideal for high-frequency applications due to its inherent capacitance and response time.

  10. Are there any alternative components that can be used in place of 1N4738AUR?

    • Yes, other Zener diodes with similar voltage ratings and characteristics can be considered as alternatives.