Semtech Corporation
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1N4987
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1N4987 Diode

Product Overview

The 1N4987 diode is a semiconductor device belonging to the category of rectifier diodes. It is commonly used in electronic circuits for its ability to conduct current in only one direction, making it suitable for converting alternating current (AC) to direct current (DC). The diode exhibits characteristics such as low forward voltage drop, high surge current capability, and fast switching speed. It is typically packaged in a glass-encapsulated DO-41 package and is available in various packaging quantities.

Specifications

  • Forward Voltage Drop: 0.7V
  • Reverse Voltage: 1000V
  • Maximum Average Forward Current: 1A
  • Peak Surge Current: 30A
  • Operating Temperature Range: -65°C to 175°C

Detailed Pin Configuration

The 1N4987 diode has two pins, with the anode connected to the positive terminal and the cathode connected to the negative terminal.

Functional Features

The diode acts as a one-way valve for electric current, allowing current to flow in only one direction. It also provides protection against reverse voltage and can handle high surge currents.

Advantages and Disadvantages

Advantages

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

Disadvantages

  • Limited maximum average forward current
  • Relatively high reverse recovery time

Working Principles

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

Detailed Application Field Plans

The 1N4987 diode finds applications in power supplies, rectifiers, inverters, and other electronic circuits where the conversion of AC to DC is required. It is particularly useful in high-voltage applications due to its high reverse voltage rating.

Detailed and Complete Alternative Models

  • 1N4007
  • 1N5408
  • 1N5822
  • FR107

In conclusion, the 1N4987 diode is a versatile component widely used in electronic circuits for its rectification capabilities and robust characteristics. Its high reverse voltage rating and fast switching speed make it suitable for diverse applications in the electronics industry.

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Énumérez 10 questions et réponses courantes liées à l'application de 1N4987 dans les solutions techniques

  1. What is the 1N4987 diode used for?

    • The 1N4987 diode is commonly used for voltage regulation and protection in various technical solutions.

  2. What are the key specifications of the 1N4987 diode?

    • The 1N4987 diode typically has a maximum repetitive reverse voltage of 200V, a forward current of 3A, and a forward voltage drop of around 1V.

  3. How does the 1N4987 diode provide voltage regulation?

    • The 1N4987 diode can be used in voltage regulator circuits to maintain a stable output voltage by effectively clamping or limiting the voltage across a load.

  4. In what types of technical solutions is the 1N4987 diode commonly used?

    • The 1N4987 diode is often employed in power supply units, battery charging circuits, and voltage regulation systems in electronic devices.

  5. What are the typical applications of the 1N4987 diode?

    • Common applications include overvoltage protection, reverse polarity protection, and general purpose rectification in electronic circuits.

  6. What are the temperature considerations for the 1N4987 diode?

    • The 1N4987 diode is designed to operate within a specified temperature range, typically from -65°C to 175°C, ensuring reliable performance in various environments.

  7. How does the 1N4987 diode handle transient voltage spikes?

    • The 1N4987 diode can effectively suppress transient voltage spikes and protect sensitive components by diverting excess current away from the circuit.

  8. Can the 1N4987 diode be used in high-frequency applications?

    • Yes, the 1N4987 diode is suitable for high-frequency applications due to its fast switching characteristics and low junction capacitance.

  9. What are the packaging options available for the 1N4987 diode?

    • The 1N4987 diode is commonly available in various packages such as axial-lead, surface mount, and through-hole configurations to accommodate different assembly requirements.

  10. Are there any important considerations when designing with the 1N4987 diode?

    • It's crucial to consider the diode's forward voltage drop, reverse recovery time, and power dissipation to ensure proper functionality and reliability in the intended technical solution.