Littelfuse Inc.
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V140LS20APX2855
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V140LS20APX2855 Encyclopedia Entry

Product Overview

The V140LS20APX2855 belongs to the category of transient voltage suppressor (TVS) diodes. These diodes are used to protect sensitive electronic components from voltage spikes and transients. The V140LS20APX2855 is designed to provide robust protection against overvoltage events, making it suitable for a wide range of applications. Its characteristics include high surge capability, low clamping voltage, and fast response time. The diode is typically packaged in a surface mount package and is available in various quantities to suit different application needs.

Specifications

  • Voltage Rating: 140V
  • Peak Pulse Power: 1500W
  • Breakdown Voltage: 156V
  • Clamping Voltage: 227V
  • Package Type: SMC (DO-214AB)
  • Quantity: Available in reels of 3000 units

Detailed Pin Configuration

The V140LS20APX2855 TVS diode has a standard SMC package with two pins. Pin 1 is the cathode, and pin 2 is the anode.

Functional Features

  • Transient Voltage Suppression: Effectively clamps transient voltages to protect downstream components.
  • Fast Response Time: Rapid reaction to voltage spikes ensures minimal impact on the protected circuitry.
  • High Surge Capability: Capable of handling large surge currents without degradation.

Advantages and Disadvantages

Advantages

  • Reliable overvoltage protection
  • Fast response time
  • High surge capability

Disadvantages

  • Clamping voltage may be relatively high for some applications
  • Sensitive to reverse polarity connection

Working Principles

The V140LS20APX2855 operates based on the principle of avalanche breakdown. When a voltage spike occurs, the diode rapidly conducts, diverting excess current away from the protected circuit. This action effectively limits the voltage across the protected components, preventing damage.

Detailed Application Field Plans

The V140LS20APX2855 is commonly used in various electronic systems, including: - Power supplies - Communication equipment - Automotive electronics - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

  • Alternative Model 1: V130LS20APX2855

    • Voltage Rating: 130V
    • Peak Pulse Power: 1500W
    • Package Type: SMC (DO-214AB)

  • Alternative Model 2: V150LS20APX2855

    • Voltage Rating: 150V
    • Peak Pulse Power: 1500W
    • Package Type: SMC (DO-214AB)

  • Alternative Model 3: P6SMBJ140CA

    • Voltage Rating: 140V
    • Peak Pulse Power: 600W
    • Package Type: DO-214AA (SMB)

In conclusion, the V140LS20APX2855 transient voltage suppressor diode offers reliable overvoltage protection with fast response times and high surge capability. Its application spans across various industries, and alternative models are available to accommodate specific voltage requirements.

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רשום 10 שאלות ותשובות נפוצות הקשורות ליישום של V140LS20APX2855 בפתרונות טכניים

  1. What is V140LS20APX2855?

    • V140LS20APX2855 is a type of varistor, also known as a voltage-dependent resistor, which is used to protect electronic circuits from overvoltage conditions.

  2. How does V140LS20APX2855 work?

    • V140LS20APX2855 operates by changing its resistance in response to changes in voltage, effectively diverting excess current away from sensitive components.

  3. What are the typical applications of V140LS20APX2855?

    • V140LS20APX2855 is commonly used in surge protection devices, power supplies, and electronic equipment to safeguard against transient voltage spikes.

  4. What are the key specifications of V140LS20APX2855?

    • The V140LS20APX2855 typically has a maximum continuous operating voltage of 140V, a peak current capability of 20kA, and a response time of nanoseconds.

  5. How do I select the right V140LS20APX2855 for my application?

    • When selecting a V140LS20APX2855, consider factors such as the maximum operating voltage, energy absorption capability, and response time to ensure it meets the requirements of your specific application.

  6. Can V140LS20APX2855 be used in outdoor environments?

    • Yes, V140LS20APX2855 can be used in outdoor environments, but it should be housed in an appropriate enclosure to protect it from environmental factors.

  7. What are the potential failure modes of V140LS20APX2855?

    • Common failure modes of V140LS20APX2855 include thermal runaway, degradation of clamping voltage, and mechanical damage due to excessive current or voltage.

  8. Are there any special considerations for soldering V140LS20APX2855?

    • It's important to follow the manufacturer's guidelines for soldering V140LS20APX2855 to prevent overheating and damage to the component.

  9. Can V140LS20APX2855 be used in high-frequency applications?

    • V140LS20APX2855 may not be suitable for high-frequency applications due to its inherent capacitance and inductance, which can affect signal integrity.

  10. What are the best practices for integrating V140LS20APX2855 into a circuit design?

    • Best practices include placing V140LS20APX2855 close to the input power source, ensuring proper grounding, and incorporating additional protective components for comprehensive surge protection.