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1N4757A R1G
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1N4757A R1G

Product Overview

Category:

The 1N4757A R1G belongs to the category of Zener diodes.

Use:

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

Characteristics:

  • Zener voltage: 43V
  • Power dissipation: 1.0W
  • Package type: DO-41
  • RoHS compliant

Package:

The 1N4757A R1G is typically available in a DO-41 package.

Packaging/Quantity:

It is usually supplied in reels or bulk packaging, with quantities varying based on manufacturer specifications.

Specifications

  • Zener voltage: 43V
  • Power dissipation: 1.0W
  • Maximum forward voltage: 1.5V
  • Maximum reverse current: 5μA
  • Operating temperature range: -65°C to +200°C

Detailed Pin Configuration

The 1N4757A R1G 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 Zener diode maintains a constant voltage across its terminals, providing stability in electronic circuits.
  • Overvoltage protection: It prevents excessive voltage from damaging sensitive components by conducting when the voltage exceeds the Zener voltage.

Advantages

  • Precise voltage regulation
  • Compact size
  • RoHS compliant

Disadvantages

  • Limited power dissipation capability
  • Susceptible to thermal runaway if not properly heatsinked

Working Principles

The 1N4757A R1G operates based on the Zener effect, where it exhibits a controlled breakdown at a specific voltage, allowing it to regulate voltage in a circuit.

Detailed Application Field Plans

The 1N4757A R1G is widely used in various applications such as: - Voltage regulators - Overvoltage protection circuits - Power supplies - Signal clamping circuits

Detailed and Complete Alternative Models

Some alternative models to the 1N4757A R1G include: - 1N4730A (Zener voltage: 3.9V) - 1N4744A (Zener voltage: 15V) - 1N4764A (Zener voltage: 100V)

In conclusion, the 1N4757A R1G Zener diode is a crucial component in electronic circuits, providing voltage regulation and overvoltage protection. Its precise characteristics and wide application make it a versatile choice for various electronic designs.

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10個與1N4757A R1G在技術方案中應用相關的常見問題與解答

  1. What is the 1N4757A R1G?

    • The 1N4757A R1G is a Zener diode with a voltage rating of 43V and a power rating of 1W.

  2. What are the typical applications of the 1N4757A R1G?

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

  3. How does the 1N4757A R1G work as a voltage regulator?

    • When operated in its reverse breakdown region, the Zener diode maintains a nearly constant voltage across its terminals, effectively regulating the output voltage.

  4. Can the 1N4757A R1G be used for voltage reference purposes?

    • Yes, it can be used as a stable voltage reference due to its ability to maintain a constant voltage across its terminals.

  5. What are the key specifications to consider when using the 1N4757A R1G in a circuit?

    • Key specifications include its voltage rating, power dissipation, and temperature coefficient.

  6. How can the 1N4757A R1G be employed for overvoltage protection?

    • By placing the Zener diode in parallel with the load, it can clamp the voltage across the load to its rated voltage, protecting the circuit from overvoltage conditions.

  7. What are the typical operating conditions for the 1N4757A R1G?

    • It operates within a specified range of current, temperature, and voltage to ensure proper functionality.

  8. Are there any considerations for heat dissipation when using the 1N4757A R1G?

    • Yes, since it has a power rating of 1W, adequate heat sinking or derating may be necessary to prevent overheating.

  9. Can multiple 1N4757A R1G diodes be connected in series or parallel?

    • Yes, they can be connected in series to achieve higher voltage ratings or in parallel to increase the current-handling capability.

  10. What are some common alternatives to the 1N4757A R1G for similar applications?

    • Alternatives include other Zener diodes with comparable voltage and power ratings, as well as voltage regulators and voltage references based on different technologies.