Littelfuse Inc.
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V140LA20APX1347
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V140LA20APX1347

1. Product Overview

Category:

The V140LA20APX1347 belongs to the category of electronic components, specifically a varistor.

Use:

It is used as a voltage-dependent resistor to protect electrical circuits from excessive transient voltage surges.

Characteristics:

  • Voltage-dependent resistance
  • Non-linear response to voltage changes
  • High energy absorption capacity
  • Fast response time

Package:

The V140LA20APX1347 is typically packaged in a cylindrical or disc shape, with leads for connection to the circuit board.

Essence:

The essence of the V140LA20APX1347 lies in its ability to limit transient overvoltage and protect sensitive electronic devices.

Packaging/Quantity:

It is commonly available in bulk packaging, with quantities varying based on the supplier and customer requirements.

2. Specifications

  • Maximum Allowable Voltage: 140V
  • Energy Absorption Capacity: 20J
  • Peak Current Capability: 4500A
  • Operating Temperature Range: -40°C to 85°C
  • Capacitance: <100pF

3. Detailed Pin Configuration

The V140LA20APX1347 typically has two leads for connection to the circuit. The pin configuration may vary slightly based on the manufacturer, but the standard configuration includes one lead for input and the other for output.

4. Functional Features

  • Transient voltage surge suppression
  • Rapid response to voltage spikes
  • Low leakage current
  • Stable performance over a wide temperature range

5. Advantages and Disadvantages

Advantages:

  • Effective protection against voltage transients
  • High energy absorption capability
  • Wide operating temperature range

Disadvantages:

  • Non-linear response may introduce harmonic distortion in some applications
  • Limited lifespan under repeated high-energy surges

6. Working Principles

The V140LA20APX1347 operates based on the principle of voltage-dependent resistance. When subjected to a transient overvoltage, the varistor's resistance decreases, allowing it to absorb the excess energy and protect the connected circuitry.

7. Detailed Application Field Plans

The V140LA20APX1347 finds extensive use in various electronic systems, including: - Power supply units - Telecommunication equipment - Industrial control systems - Consumer electronics - Automotive electronics

8. Detailed and Complete Alternative Models

Some alternative models to the V140LA20APX1347 include: - V130LA20AP - V150LA20AP - V140LA20A

In conclusion, the V140LA20APX1347 varistor serves as a crucial component in safeguarding electronic circuits from transient voltage surges. Its specifications, functional features, and application versatility make it an essential part of modern electronic systems.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de V140LA20APX1347 en soluciones técnicas

  1. What is V140LA20APX1347?

    • V140LA20APX1347 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 V140LA20APX1347 work?

    • V140LA20APX1347 works by changing its resistance in response to changes in voltage. When the voltage exceeds a certain threshold, the varistor conducts current and shunts the excess voltage away from the protected circuit.

  3. What are the typical applications of V140LA20APX1347?

    • V140LA20APX1347 is commonly used in surge protection devices, power supplies, telecommunication equipment, and industrial control systems to safeguard against transient voltage spikes.

  4. What are the key specifications of V140LA20APX1347?

    • The key specifications of V140LA20APX1347 include its maximum allowable voltage, energy absorption capability, response time, and operating temperature range.

  5. How should V140LA20APX1347 be installed in a circuit?

    • V140LA20APX1347 should be connected in parallel with the circuit being protected, ensuring that it can quickly respond to overvoltage events.

  6. What are the potential failure modes of V140LA20APX1347?

    • V140LA20APX1347 can fail due to prolonged exposure to high voltage, excessive current, or mechanical damage. Regular testing and inspection are recommended to ensure its reliability.

  7. Can V140LA20APX1347 be used in outdoor environments?

    • Yes, V140LA20APX1347 is designed to withstand outdoor conditions, but proper encapsulation and sealing may be necessary to protect it from moisture and contaminants.

  8. Are there any alternatives to V140LA20APX1347 for surge protection?

    • Yes, there are other varistors with different voltage ratings and energy absorption capabilities that can be considered based on specific application requirements.

  9. What precautions should be taken when handling V140LA20APX1347?

    • When handling V140LA20APX1347, it's important to follow ESD (electrostatic discharge) precautions and avoid subjecting it to excessive mechanical stress to prevent damage.

  10. How can the performance of V140LA20APX1347 be tested?

    • The performance of V140LA20APX1347 can be tested using surge generators or transient voltage suppressor testers to simulate overvoltage conditions and verify its protective function.