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SMCJ120A
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SMCJ120A Diode - Encyclopedia Entry

Introduction

The SMCJ120A diode is a crucial component in electronic circuits, providing protection against transient voltage spikes. This entry provides a comprehensive overview of the SMCJ120A diode, including its product category, basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Product Category

The SMCJ120A diode belongs to the category of transient voltage suppressor (TVS) diodes, specifically designed to protect sensitive electronic components from voltage transients.

Basic Information Overview

  • Use: The SMCJ120A diode is used to suppress transient voltages in electronic circuits, safeguarding components from damage.
  • Characteristics: It exhibits low clamping voltage, high surge capability, and fast response time.
  • Package: The diode is typically available in a surface-mount package, ensuring easy integration into circuit boards.
  • Essence: Its essence lies in providing robust protection against voltage surges, ensuring the reliability of electronic systems.
  • Packaging/Quantity: The diode is commonly packaged in reels or tubes, with varying quantities based on manufacturer specifications.

Specifications

  • Voltage Rating: 120V
  • Peak Pulse Power: 1500W
  • Breakdown Voltage: 133V to 147V
  • Operating Temperature Range: -55°C to 150°C
  • Package Type: SMC (DO-214AB)

Detailed Pin Configuration

The SMCJ120A diode typically features two pins, with the cathode identified by a band or marking on the body of the diode. The anode is the unmarked terminal.

Functional Features

  • Transient Voltage Suppression: Effectively clamps transient voltages to safe levels, protecting downstream components.
  • Fast Response Time: Rapidly responds to voltage transients, minimizing the risk of damage to sensitive electronics.
  • Low Clamping Voltage: Ensures that the protected circuitry is exposed to minimal voltage stress during transient events.

Advantages and Disadvantages

Advantages

  • Robust transient voltage protection
  • Fast response time
  • Compact surface-mount package
  • Wide operating temperature range

Disadvantages

  • Limited to specific voltage ratings
  • Requires careful consideration of placement in circuit design

Working Principles

The SMCJ120A diode operates by diverting excess transient current away from sensitive components when a voltage spike occurs. It achieves this through rapid conduction, effectively limiting the voltage across the protected circuit.

Detailed Application Field Plans

The SMCJ120A diode finds extensive use in various applications, including: - Power supply units - Communication equipment - Automotive electronics - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

  • SMCJ5.0A: 5.0V TVS diode
  • SMCJ15A: 15V TVS diode
  • SMCJ30A: 30V TVS diode
  • SMCJ58A: 58V TVS diode
  • SMCJ170A: 170V TVS diode

In conclusion, the SMCJ120A diode serves as a critical component in protecting electronic circuits from transient voltage events. Its robust characteristics, compact packaging, and reliable performance make it a preferred choice for engineers designing resilient electronic systems.

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Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät SMCJ120A :n soveltamiseen teknisissä ratkaisuissa

  1. What is the maximum peak pulse power of SMCJ120A?

    • The maximum peak pulse power of SMCJ120A is 1500 watts.

  2. What is the breakdown voltage of SMCJ120A?

    • The breakdown voltage of SMCJ120A is typically 133 volts.

  3. What is the operating temperature range for SMCJ120A?

    • SMCJ120A has an operating temperature range of -55°C to +150°C.

  4. What is the typical clamping voltage of SMCJ120A?

    • The typical clamping voltage of SMCJ120A is 193 volts at 10A.

  5. What are the applications of SMCJ120A in technical solutions?

    • SMCJ120A is commonly used for transient voltage suppression in various electronic systems, including telecommunications, industrial equipment, and automotive electronics.

  6. What is the reverse stand-off voltage of SMCJ120A?

    • The reverse stand-off voltage of SMCJ120A is 120 volts.

  7. Does SMCJ120A have a low leakage current?

    • Yes, SMCJ120A has a low leakage current, which makes it suitable for sensitive electronic applications.

  8. Is SMCJ120A RoHS compliant?

    • Yes, SMCJ120A is RoHS compliant, meeting environmental standards.

  9. What is the response time of SMCJ120A?

    • The response time of SMCJ120A is very fast, typically responding in less than 1 nanosecond.

  10. Can SMCJ120A be used for surge protection in power supply units?

    • Yes, SMCJ120A is often used for surge protection in power supply units due to its high power handling capability and fast response time.