Semtech Corporation
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1N4947
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1N4947 Diode

Product Overview

The 1N4947 diode is a semiconductor device belonging to the category of rectifier diodes. It is commonly used in electronic circuits for its ability to convert alternating current (AC) into 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 DO-41 package and is available in both through-hole and surface mount configurations. The essence of the 1N4947 lies in its role as a crucial component in power supply and voltage regulation circuits. It is commonly sold in bulk packaging with varying quantities.

Specifications

  • Maximum repetitive peak reverse voltage: 1000V
  • Average rectified output current: 1A
  • Forward voltage drop: 1V
  • Maximum surge current: 30A
  • Operating temperature range: -65°C to +175°C

Detailed Pin Configuration

The 1N4947 diode features a standard axial lead configuration with two leads. The anode is denoted by a longer lead, while the cathode is connected to the shorter lead.

Functional Features

The 1N4947 diode serves as a unidirectional current flow device, allowing current to pass through it in only one direction. Its fast switching speed makes it suitable for applications requiring rapid response times.

Advantages and Disadvantages

Advantages

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

Disadvantages

  • Limited maximum repetitive peak reverse voltage compared to other diodes
  • Relatively lower average rectified output current

Working Principles

When a positive voltage is applied to the anode with respect to the cathode, the diode conducts and allows current to flow. Conversely, when a negative voltage is applied, the diode blocks the current flow.

Detailed Application Field Plans

The 1N4947 diode finds extensive use in various applications, including: - Power supply units - Voltage regulators - Rectification circuits - Inverters - Battery chargers

Detailed and Complete Alternative Models

Some alternative models to the 1N4947 diode include: - 1N4001 - 1N4004 - 1N4007 - 1N5408 - 1N5819

In conclusion, the 1N4947 diode is a vital component in electronic circuits, particularly in power supply and voltage regulation applications. Its unique characteristics and functional features make it a popular choice among engineers and hobbyists alike.

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قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق 1N4947 في الحلول التقنية

  1. What is the 1N4947 diode used for?

    • The 1N4947 diode is commonly used for general-purpose rectification in electronic circuits.

  2. What are the key specifications of the 1N4947 diode?

    • The 1N4947 diode is a silicon rectifier diode with a maximum repetitive peak reverse voltage of 1000V and a maximum average forward rectified current of 1A.

  3. Can the 1N4947 diode be used for voltage regulation?

    • No, the 1N4947 diode is not suitable for voltage regulation due to its unidirectional conduction characteristics.

  4. In what type of circuits is the 1N4947 diode commonly used?

    • The 1N4947 diode is commonly used in power supply circuits, battery chargers, and other applications requiring rectification of AC to DC.

  5. What is the forward voltage drop of the 1N4947 diode?

    • The forward voltage drop of the 1N4947 diode is typically around 1V at the rated forward current of 1A.

  6. Is the 1N4947 diode suitable for high-frequency applications?

    • The 1N4947 diode is not recommended for high-frequency applications due to its relatively slow recovery time.

  7. Can multiple 1N4947 diodes be connected in parallel to increase current handling capability?

    • Yes, multiple 1N4947 diodes can be connected in parallel to increase the overall current handling capability of the circuit.

  8. What are the typical failure modes of the 1N4947 diode?

    • The 1N4947 diode can fail due to overvoltage, overcurrent, or excessive junction temperature, leading to short or open circuit conditions.

  9. Are there any special considerations for mounting the 1N4947 diode?

    • It is important to mount the 1N4947 diode on a heat sink or in a well-ventilated area to prevent overheating during operation.

  10. Can the 1N4947 diode be used in automotive applications?

    • Yes, the 1N4947 diode can be used in automotive applications such as alternator rectification and battery charging systems, provided it meets the required specifications and operating conditions.