ON Semiconductor
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BC517-D74Z
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BC517-D74Z

Product Overview

Category

The BC517-D74Z belongs to the category of NPN Darlington transistors.

Use

This transistor is commonly used for amplification and switching applications in electronic circuits.

Characteristics

  • High current gain
  • Low saturation voltage
  • Suitable for driving medium power loads

Package

The BC517-D74Z is typically available in a TO-92 package.

Essence

This transistor is essential for controlling and amplifying electrical signals in various electronic devices and systems.

Packaging/Quantity

It is usually packaged in reels or tubes, with quantities varying based on supplier specifications.

Specifications

  • Collector-Emitter Voltage (VCEO): 30V
  • Collector Current (IC): 1.2A
  • Power Dissipation (PD): 625mW
  • DC Current Gain (hFE): 1000 (min) - 5000 (max)

Detailed Pin Configuration

The BC517-D74Z has three pins: 1. Emitter (E) 2. Base (B) 3. Collector (C)

Functional Features

  • High current gain allows for efficient signal amplification.
  • Low saturation voltage ensures minimal power loss during switching operations.

Advantages

  • High current gain enables effective signal amplification.
  • Low saturation voltage reduces power dissipation and heat generation.

Disadvantages

  • Relatively low switching speed compared to some alternative models.
  • Limited voltage and current ratings compared to higher-power transistors.

Working Principles

The BC517-D74Z operates based on the principles of bipolar junction transistors, utilizing the interaction between its three semiconductor layers to control current flow.

Detailed Application Field Plans

Audio Amplification

The BC517-D74Z can be used in audio amplifier circuits to boost weak input signals for driving speakers or headphones.

Switching Circuits

In electronic switches, this transistor can control the flow of current through various components, enabling on/off functionality.

Motor Control

When integrated into motor control circuits, the BC517-D74Z can regulate the speed and direction of small motors.

Detailed and Complete Alternative Models

  1. BC516
  2. BC518
  3. TIP120
  4. TIP122
  5. 2N3906

In conclusion, the BC517-D74Z NPN Darlington transistor offers high current gain and low saturation voltage, making it suitable for amplification and switching applications in various electronic circuits. While it may have limitations in terms of speed and power ratings, it remains a valuable component in many electronic designs.

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Énumérez 10 questions et réponses courantes liées à l'application de BC517-D74Z dans les solutions techniques

  1. What is BC517-D74Z?

    • BC517-D74Z is a PNP Darlington transistor designed for general-purpose amplifier and low-speed switching applications.

  2. What are the key specifications of BC517-D74Z?

    • The key specifications include a collector current of 1.2A, a collector-emitter voltage of 30V, and a DC current gain (hFE) of 2500 minimum at 10mA.

  3. What are the typical applications of BC517-D74Z?

    • Typical applications include audio amplification, relay drivers, general-purpose switching, and signal amplification in electronic circuits.

  4. How do I properly bias BC517-D74Z in a circuit?

    • BC517-D74Z can be biased using appropriate resistors to ensure proper operating conditions and avoid saturation or cutoff.

  5. What are the recommended operating conditions for BC517-D74Z?

    • The recommended operating conditions include a maximum collector current of 1.2A, a maximum collector-emitter voltage of 30V, and a power dissipation of 625mW.

  6. Can BC517-D74Z be used for high-frequency applications?

    • No, BC517-D74Z is not suitable for high-frequency applications due to its limited frequency response.

  7. What are the thermal considerations for BC517-D74Z?

    • Proper heat sinking and thermal management should be considered to ensure the device operates within its temperature limits.

  8. Is BC517-D74Z suitable for automotive applications?

    • BC517-D74Z may not be ideal for automotive applications due to specific requirements for automotive-grade components.

  9. What are the potential alternatives to BC517-D74Z?

    • Potential alternatives include other PNP Darlington transistors with similar or compatible characteristics, such as TIP122 or TIP127.

  10. Where can I find detailed application notes for BC517-D74Z?

    • Detailed application notes can be found in the datasheet provided by the manufacturer or through technical resources related to semiconductor devices.