Microsemi Corporation
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1N4742AE3

1N4742AE3 - Semiconductor Diode

Product Overview

Category:

The 1N4742AE3 belongs to the category of semiconductor diodes.

Use:

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

Characteristics:

  • Forward Voltage: 1.0V
  • Reverse Voltage: 12V
  • Power Dissipation: 1.0W
  • Operating Temperature Range: -65°C to +200°C

Package:

The 1N4742AE3 is typically available in a DO-41 axial leaded package.

Packaging/Quantity:

It is usually packaged in reels, tubes, or bulk quantities, depending on the supplier.

Specifications

  • Manufacturer: [Insert Manufacturer Name]
  • Part Number: 1N4742AE3
  • Type: Zener Diode
  • Voltage Tolerance: ±5%
  • Maximum Reverse Leakage Current: 5μA
  • Maximum Zener Impedance: 20Ω

Detailed Pin Configuration

The 1N4742AE3 has two pins, with the anode connected to the positive terminal and the cathode connected to the negative terminal.

Functional Features

  • Voltage Regulation: The 1N4742AE3 provides stable voltage output when operated within its specified parameters.
  • Reverse Voltage Protection: It prevents damage to the circuit by limiting the reverse voltage across it.

Advantages

  • Precise Voltage Regulation: The 1N4742AE3 offers accurate voltage regulation, making it suitable for various electronic applications.
  • Compact Size: Its small form factor makes it ideal for space-constrained designs.

Disadvantages

  • Limited Power Dissipation: The maximum power dissipation of 1.0W may restrict its use in high-power applications.
  • Voltage Tolerance: The ±5% voltage tolerance may not be suitable for ultra-precise voltage regulation requirements.

Working Principles

The 1N4742AE3 operates based on the principle of the Zener effect, where it maintains a nearly constant voltage across its terminals when reverse-biased within its breakdown voltage range.

Detailed Application Field Plans

The 1N4742AE3 is widely used in: - Voltage Regulator Circuits - Overvoltage Protection Circuits - Signal Clipping Circuits

Detailed and Complete Alternative Models

Some alternative models to the 1N4742AE3 include: - 1N4739A - 1N4744A - BZX55C12

In conclusion, the 1N4742AE3 semiconductor diode is a versatile component that finds application in various electronic circuits due to its voltage regulation and protection capabilities.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací 1N4742AE3 v technických řešeních

  1. What is the 1N4742AE3 diode used for?

    • The 1N4742AE3 is a Zener diode commonly used for voltage regulation and protection in electronic circuits.

  2. What is the voltage rating of the 1N4742AE3 diode?

    • The 1N4742AE3 has a nominal voltage of 12 volts, making it suitable for applications requiring a stable 12V reference voltage.

  3. How does the 1N4742AE3 diode regulate voltage?

    • The 1N4742AE3 operates in the reverse-biased breakdown region, maintaining a nearly constant voltage drop across its terminals, effectively regulating the output voltage.

  4. Can the 1N4742AE3 be used for overvoltage protection?

    • Yes, the 1N4742AE3 can be employed to protect sensitive components from overvoltage conditions by shunting excess voltage to ground.

  5. What are typical applications of the 1N4742AE3 diode?

    • Common applications include voltage regulators, voltage references, power supplies, and precision signal conditioning circuits.

  6. What is the maximum power dissipation of the 1N4742AE3?

    • The 1N4742AE3 has a maximum power dissipation of 1 watt, allowing it to handle moderate power levels in circuit designs.

  7. Is the 1N4742AE3 suitable for automotive electronics?

    • Yes, the 1N4742AE3 can be used in automotive electronics for voltage regulation and transient protection purposes.

  8. What is the temperature coefficient of the 1N4742AE3 diode?

    • The temperature coefficient is typically around -2 mV/°C, indicating a relatively stable voltage reference over a range of temperatures.

  9. Can multiple 1N4742AE3 diodes be connected in series or parallel?

    • Yes, multiple 1N4742AE3 diodes can be connected in series to create higher voltage references or in parallel to increase current-handling capability.

  10. Are there any precautions to consider when using the 1N4742AE3 diode?

    • It's important to ensure proper heat dissipation and current limiting to prevent the diode from exceeding its maximum ratings, and to avoid reverse voltage application to maintain its reliability and performance.