Taiwan Semiconductor Corporation
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1N4742AHR1G
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1N4742AHR1G - Semiconductor Diode

Basic Information Overview

  • Category: Semiconductor Diode
  • Use: Voltage regulation and rectification
  • Characteristics: Zener diode, low reverse leakage, high reliability
  • Package: DO-41
  • Essence: Regulates voltage by maintaining a constant output voltage
  • Packaging/Quantity: Tape & Reel, 5000 units per reel

Specifications

  • Voltage: 12V
  • Power Dissipation: 1.0W
  • Zener Voltage Tolerance: ±5%
  • Operating Temperature Range: -65°C to +200°C

Detailed Pin Configuration

The 1N4742AHR1G has two pins: 1. Anode (A) 2. Cathode (K)

Functional Features

  • Maintains a constant voltage across its terminals
  • Allows current to flow in the forward direction like a regular diode
  • Blocks the flow of current in the reverse direction until the voltage reaches the breakdown voltage

Advantages and Disadvantages

Advantages

  • Precise voltage regulation
  • Low reverse leakage current
  • High reliability and ruggedness

Disadvantages

  • Limited power dissipation capability
  • Voltage tolerance may not be suitable for some applications

Working Principles

The 1N4742AHR1G operates on the principle of the Zener effect, where it maintains a nearly constant voltage across its terminals when reverse-biased.

Detailed Application Field Plans

This diode is commonly used in voltage regulator circuits, surge suppressors, and overvoltage protection circuits in various electronic devices such as power supplies, automotive electronics, and industrial equipment.

Detailed and Complete Alternative Models

  • 1N4733AHR1G (5.1V Zener voltage)
  • 1N4756AHR1G (39V Zener voltage)
  • BZX84C12LT1G (12V Zener voltage)

This completes the entry for the 1N4742AHR1G semiconductor diode, covering its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de 1N4742AHR1G en soluciones técnicas

  1. What is the 1N4742AHR1G diode used for?

    • The 1N4742AHR1G is a Zener diode commonly used for voltage regulation and protection in electronic circuits.

  2. What is the maximum power dissipation of the 1N4742AHR1G?

    • The maximum power dissipation of the 1N4742AHR1G is 1.3 watts.

  3. What is the voltage rating of the 1N4742AHR1G?

    • The 1N4742AHR1G has a nominal voltage rating of 12 volts.

  4. How does the 1N4742AHR1G regulate voltage?

    • The 1N4742AHR1G regulates voltage by maintaining a constant output voltage across its terminals, even when the input voltage varies.

  5. Can the 1N4742AHR1G be used for overvoltage protection?

    • Yes, the 1N4742AHR1G can be used to protect sensitive components from overvoltage conditions by shunting excess voltage to ground.

  6. What are the typical applications of the 1N4742AHR1G?

    • Typical applications include voltage regulation in power supplies, overvoltage protection in electronic circuits, and voltage reference in precision instruments.

  7. What is the operating temperature range of the 1N4742AHR1G?

    • The 1N4742AHR1G operates within a temperature range of -65°C to +200°C.

  8. Is the 1N4742AHR1G polarity sensitive?

    • Yes, the 1N4742AHR1G is polarity sensitive and must be connected with the correct orientation in a circuit.

  9. Can multiple 1N4742AHR1G diodes be connected in series or parallel?

    • Multiple 1N4742AHR1G diodes can be connected in series to increase the breakdown voltage or in parallel to increase the current-handling capacity.

  10. What are the key specifications to consider when using the 1N4742AHR1G in a technical solution?

    • Key specifications to consider include the voltage rating, power dissipation, operating temperature, and current-handling capability of the diode.