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1N974A
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1N974A Semiconductor Diode

Product Overview

Category:

The 1N974A is a semiconductor diode belonging to the category of signal or small-signal diodes.

Use:

It is commonly used in electronic circuits for rectification, clipping, and switching applications.

Characteristics:

  • Forward Voltage: 0.7V
  • Reverse Voltage: 75V
  • Maximum Continuous Forward Current: 150mA
  • Package Type: DO-35
  • Operating Temperature Range: -65°C to +175°C

Package:

The 1N974A is typically available in a glass axial-lead package.

Essence:

This diode is essential for converting alternating current (AC) to direct current (DC) and for protecting circuits from voltage spikes.

Packaging/Quantity:

The 1N974A is usually packaged in reels or tubes, with quantities varying based on manufacturer specifications.

Specifications

  • Peak Reverse Voltage: 75V
  • Average Rectified Current: 150mA
  • Maximum Forward Voltage Drop: 0.7V
  • Reverse Recovery Time: 4ns

Detailed Pin Configuration

The 1N974A has two leads, with the anode connected to the positive terminal and the cathode connected to the negative terminal.

Functional Features

  • Fast switching speed
  • Low forward voltage drop
  • High reliability

Advantages and Disadvantages

Advantages

  • Small size
  • Low cost
  • Wide operating temperature range

Disadvantages

  • Limited maximum current handling capability
  • Susceptible to damage from excessive reverse voltage

Working Principles

The 1N974A operates based on the principle of creating a one-way flow of current when forward-biased and blocking the flow of current when reverse-biased.

Detailed Application Field Plans

Rectification

The 1N974A can be used in power supplies to convert AC to DC.

Clipping

It is utilized in audio and video circuits to limit the amplitude of signals.

Switching

In digital circuits, the 1N974A can act as a switch to control the flow of current.

Detailed and Complete Alternative Models

  • 1N914
  • 1N4148
  • 1N4001
  • 1N5819

This completes the entry for the 1N974A semiconductor diode, covering its product details, specifications, functional features, application field plans, and alternative models.

Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van 1N974A in technische oplossingen

  1. What is 1N974A?

    • 1N974A is a silicon power rectifier diode commonly used in electronic circuits for converting alternating current (AC) to direct current (DC).

  2. What are the key specifications of 1N974A?

    • The 1N974A diode has a maximum repetitive peak reverse voltage of 200 volts, a maximum average forward rectified current of 6 amperes, and a forward voltage drop of approximately 1 volt at 3 amperes.

  3. How is 1N974A typically used in technical solutions?

    • 1N974A is often used in power supply circuits, battery chargers, voltage regulators, and other applications where AC to DC conversion is required.

  4. What are the important considerations when using 1N974A in a circuit?

    • It's crucial to consider the maximum voltage and current requirements of the circuit, as well as the thermal characteristics and mounting considerations for the diode.

  5. Can 1N974A be used in high-frequency applications?

    • While 1N974A can handle moderate frequencies, it may not be suitable for very high-frequency applications due to its inherent capacitance and switching speed limitations.

  6. Are there any common failure modes associated with 1N974A?

    • Common failure modes include overheating due to excessive current, voltage spikes, or improper heat dissipation, as well as potential damage from reverse voltage.

  7. What are some alternative diodes that can be used in place of 1N974A?

    • Alternatives include 1N400X series diodes, such as 1N4001, 1N4004, or 1N4007, which have similar characteristics and are widely available.

  8. How should 1N974A be tested and characterized in a circuit?

    • Testing can involve measuring forward voltage drop, reverse leakage current, and response to varying load conditions to ensure proper functionality.

  9. What are the typical operating temperature ranges for 1N974A?

    • The operating temperature range for 1N974A is usually between -65°C to +175°C, but it's important to consult the datasheet for specific details.

  10. Where can I find reliable sources for purchasing 1N974A diodes?

    • Reliable sources include authorized distributors, electronic component suppliers, and manufacturers' websites. It's important to verify the authenticity of the components to ensure quality and performance.