Taiwan Semiconductor Corporation
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1N4746AHR0G
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1N4746AHR0G - Semiconductor Diode

Basic Information Overview

  • Category: Semiconductor diode
  • Use: Voltage regulation and rectification
  • Characteristics: Zener diode, low leakage current, high reliability
  • Package: Axial leaded, DO-41 package
  • Essence: Regulates voltage by maintaining a constant output voltage
  • Packaging/Quantity: Typically available in reels of 2000 units

Specifications

  • Voltage: 18V
  • Power Dissipation: 1W
  • Operating Temperature Range: -65°C to +175°C
  • Tolerance: ±5%

Detailed Pin Configuration

The 1N4746AHR0G has two leads, with the anode being the longer lead and the cathode being the shorter lead.

Functional Features

  • Provides stable voltage regulation
  • Protects circuits from overvoltage
  • Low reverse leakage current

Advantages and Disadvantages

Advantages

  • Reliable voltage regulation
  • Low reverse leakage current
  • High surge capability

Disadvantages

  • Limited power dissipation
  • Tolerance of ±5% may not be suitable for precision applications

Working Principles

The 1N4746AHR0G operates based on the Zener effect, where it maintains a nearly constant voltage across its terminals when reverse biased.

Detailed Application Field Plans

  • Voltage regulation in power supplies
  • Overvoltage protection in electronic circuits
  • Signal clamping and limiting

Detailed and Complete Alternative Models

  • 1N4738AHR0G (8.2V)
  • 1N4740AHR0G (10V)
  • 1N4743AHR0G (13V)

This information provides a comprehensive overview of the 1N4746AHR0G semiconductor diode, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

10个与1N4746AHR0G在技术解决方案中的应用相关的常见问题及解答

  1. What is the 1N4746AHR0G?

    • The 1N4746AHR0G is a Zener diode with a voltage rating of 18V and a power rating of 1W.

  2. How does the 1N4746AHR0G work?

    • The 1N4746AHR0G works by allowing current to flow in the forward direction like a normal diode, but it also permits it to flow in the reverse direction when the voltage reaches its breakdown voltage.

  3. What are the typical applications of the 1N4746AHR0G?

    • The 1N4746AHR0G is commonly used for voltage regulation, voltage reference, and overvoltage protection in various electronic circuits.

  4. What is the maximum current the 1N4746AHR0G can handle?

    • The 1N4746AHR0G has a maximum current rating of 50mA.

  5. Can the 1N4746AHR0G be used for voltage regulation?

    • Yes, the 1N4746AHR0G can be used for simple voltage regulation in low-power applications.

  6. How do I select the right resistor to use with the 1N4746AHR0G?

    • To calculate the resistor value, you can use Ohm's law: R = (Vsupply - VZener) / IZener, where Vsupply is the supply voltage, VZener is the Zener voltage, and IZener is the Zener current.

  7. What are the temperature considerations for the 1N4746AHR0G?

    • The 1N4746AHR0G has a specified operating temperature range, typically from -65°C to 150°C, so it's important to consider the temperature conditions in the application.

  8. Can the 1N4746AHR0G be used for overvoltage protection?

    • Yes, the 1N4746AHR0G can be used to protect sensitive components from overvoltage by shunting excess voltage to ground.

  9. Are there any alternatives to the 1N4746AHR0G for similar applications?

    • Yes, other Zener diodes with different voltage ratings and power ratings can be used depending on the specific requirements of the application.

  10. What are some common pitfalls to avoid when using the 1N4746AHR0G?

    • It's important to avoid exceeding the maximum power dissipation and current ratings, as well as ensuring proper heat sinking if the diode is operating near its maximum ratings. Additionally, understanding the reverse leakage current is crucial for accurate circuit design.