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SMCJ85
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SMCJ85 - Product Overview and Specifications

Introduction

The SMCJ85 belongs to the category of transient voltage suppressor diodes (TVS diodes) and is widely used for surge protection in electronic circuits. This entry provides a comprehensive overview of the SMCJ85, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

  • Category: Transient Voltage Suppressor Diode
  • Use: Surge protection in electronic circuits
  • Characteristics: Fast response time, low clamping voltage, high surge current capability
  • Package: SMC (DO-214AB)
  • Essence: Protects sensitive electronic components from voltage spikes
  • Packaging/Quantity: Available in tape and reel packaging, quantity varies by manufacturer

Specifications

  • Peak Pulse Power: 1500W
  • Breakdown Voltage Range: 85V
  • Operating Temperature Range: -55°C to +150°C
  • Storage Temperature Range: -55°C to +150°C
  • RoHS Compliant: Yes

Detailed Pin Configuration

The SMCJ85 typically has two pins, with the cathode connected to the marked side of the package and the anode connected to the unmarked side.

Functional Features

  • Transient Voltage Suppression: Provides protection against voltage transients and surges.
  • Fast Response Time: Reacts quickly to voltage spikes, diverting excess current away from sensitive components.
  • Low Clamping Voltage: Limits the voltage across the protected circuit during a transient event.

Advantages and Disadvantages

  • Advantages:
    • Effective surge protection for sensitive electronics
    • Fast response time
    • RoHS compliant
  • Disadvantages:
    • Limited breakdown voltage range
    • May require additional circuitry for comprehensive surge protection

Working Principles

The SMCJ85 operates by shunting excess current away from the protected circuit when a transient voltage spike occurs. It achieves this through a combination of avalanche breakdown and zener conduction, effectively limiting the voltage across the circuit.

Detailed Application Field Plans

The SMCJ85 is commonly used in various applications, including: - Telecommunications: Protection of communication equipment from lightning-induced surges - Power Supplies: Safeguarding power supply units from voltage transients - Automotive Electronics: Surge protection for automotive control systems - Industrial Control Systems: Protection of PLCs and other industrial electronics from electrical disturbances

Detailed and Complete Alternative Models

  • SMCJ5.0A: Breakdown Voltage Range: 5.0V
  • SMCJ10A: Breakdown Voltage Range: 10V
  • SMCJ15A: Breakdown Voltage Range: 15V
  • SMCJ20A: Breakdown Voltage Range: 20V
  • SMCJ30A: Breakdown Voltage Range: 30V

In conclusion, the SMCJ85 transient voltage suppressor diode offers effective surge protection for electronic circuits, with fast response time and low clamping voltage. While it has a limited breakdown voltage range, it finds widespread use in telecommunications, power supplies, automotive electronics, and industrial control systems. Additionally, there are alternative models available with varying breakdown voltage ranges to suit different application requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SMCJ85 v technických řešeních

  1. What is the SMCJ85?

    • The SMCJ85 is a type of transient voltage suppressor diode designed to protect electronic circuits from voltage spikes and transients.

  2. What is the maximum peak pulse power of SMCJ85?

    • The maximum peak pulse power of SMCJ85 is typically 1500 watts.

  3. What is the breakdown voltage of SMCJ85?

    • The breakdown voltage of SMCJ85 is around 85 volts.

  4. How does SMCJ85 protect electronic circuits?

    • SMCJ85 clamps the voltage during transient events, diverting excess current away from sensitive components and preventing damage.

  5. What are the typical applications of SMCJ85?

    • SMCJ85 is commonly used in surge protection for telecommunications equipment, power supplies, and automotive electronics.

  6. What is the response time of SMCJ85?

    • The response time of SMCJ85 is very fast, typically in the nanosecond range.

  7. Can SMCJ85 be used for overvoltage protection in power supply units?

    • Yes, SMCJ85 is often used to protect power supply units from voltage surges and spikes.

  8. Is SMCJ85 suitable for high-speed data lines protection?

    • Yes, SMCJ85 is suitable for protecting high-speed data lines such as Ethernet, USB, and HDMI interfaces.

  9. What is the operating temperature range of SMCJ85?

    • The operating temperature range of SMCJ85 is typically between -55°C to 150°C.

  10. Are there any specific layout considerations when using SMCJ85 in a circuit?

    • It's important to minimize the length of the traces connecting the SMCJ85 to the protected circuit and to ensure a low inductance path for the best performance.

Feel free to ask if you need further information on any of these questions!