Microsemi Corporation
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1N4890A
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1N4890A

Product Overview

Category

The 1N4890A is a semiconductor diode belonging to the category of rectifier diodes.

Use

It is commonly used in electronic circuits for rectification purposes, converting alternating current (AC) to direct current (DC).

Characteristics

  • Forward Voltage: 1V
  • Reverse Voltage: 200V
  • Current Rating: 1A
  • Fast switching speed
  • Low leakage current

Package

The 1N4890A is typically available in a DO-41 axial lead package.

Packaging/Quantity

It is usually packaged in reels or tubes and is available in quantities ranging from hundreds to thousands per package.

Specifications

  • Maximum Forward Voltage: 1.0V
  • Maximum Reverse Voltage: 200V
  • Average Rectified Current: 1A
  • Maximum Surge Current: 30A
  • Operating Temperature Range: -65°C to +175°C

Detailed Pin Configuration

The 1N4890A has two leads, with the anode connected to the positive terminal and the cathode connected to the negative terminal.

Functional Features

The 1N4890A diode efficiently conducts current in one direction while blocking it in the opposite direction, making it suitable for rectification applications.

Advantages and Disadvantages

Advantages

  • Fast switching speed
  • Low forward voltage drop
  • High surge current capability

Disadvantages

  • Relatively high reverse recovery time
  • Limited maximum operating temperature

Working Principles

When a positive voltage is applied to the anode and a negative voltage to the cathode, the diode allows current to flow. In reverse bias, the diode blocks the current flow.

Detailed Application Field Plans

The 1N4890A is widely used in power supplies, battery chargers, and other electronic devices requiring rectification of AC to DC.

Detailed and Complete Alternative Models

Some alternative models to the 1N4890A include: - 1N4001 - 1N5408 - 1N5822 - 1N5819

In conclusion, the 1N4890A rectifier diode is a crucial component in electronic circuits, providing efficient rectification and reliable performance in various applications.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de 1N4890A en soluciones técnicas

  1. What is the 1N4890A diode used for?

    • The 1N4890A diode is commonly used for general-purpose rectification and power supply applications.

  2. What are the key specifications of the 1N4890A diode?

    • The 1N4890A diode typically has a maximum repetitive peak reverse voltage of 200V, a forward current of 1A, and a forward voltage drop of around 1V at 1A.

  3. Can the 1N4890A diode be used in high-frequency applications?

    • The 1N4890A diode is not specifically designed for high-frequency applications, so it may not perform optimally in such scenarios.

  4. Is the 1N4890A diode suitable for use in switching power supplies?

    • Yes, the 1N4890A diode can be used in low to moderate power switching power supply designs.

  5. What are the typical operating temperature ranges for the 1N4890A diode?

    • The 1N4890A diode is typically rated for operation within the temperature range of -65°C to +175°C.

  6. Does the 1N4890A diode require a heatsink for certain applications?

    • Depending on the specific application and power dissipation, a heatsink may be necessary to ensure proper thermal management.

  7. Can the 1N4890A diode be used in reverse voltage protection circuits?

    • Yes, the 1N4890A diode can be employed in reverse voltage protection circuits due to its reverse voltage blocking capability.

  8. Are there any common failure modes associated with the 1N4890A diode?

    • Common failure modes include overcurrent conditions leading to thermal runaway and excessive reverse voltage causing breakdown.

  9. What are some typical circuit configurations where the 1N4890A diode is utilized?

    • The 1N4890A diode is often used in half-wave and full-wave rectifier circuits, voltage clamping circuits, and general-purpose power supply designs.

  10. Where can I find detailed application notes and reference designs for the 1N4890A diode?

    • Detailed application notes and reference designs for the 1N4890A diode can be found in the manufacturer's datasheets, application guides, and technical resources.