Littelfuse Inc.
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V420LA40BP
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V420LA40BP

Product Overview

Category

The V420LA40BP belongs to the category of varistors, which are electronic components used for voltage regulation and surge protection.

Use

It is used to protect sensitive electronic devices from voltage surges and transient overvoltage conditions.

Characteristics

  • High energy absorption capability
  • Fast response time
  • Wide operating temperature range
  • Reliable performance

Package

The V420LA40BP is typically available in a disc-shaped package with leads for easy integration into circuit boards.

Essence

The essence of the V420LA40BP lies in its ability to rapidly absorb and dissipate high levels of energy when subjected to voltage spikes.

Packaging/Quantity

It is commonly packaged in reels or trays and is available in varying quantities depending on the manufacturer's specifications.

Specifications

  • Maximum Allowable Voltage: 420V
  • Peak Current Capability: 10kA
  • Energy Absorption: 360J
  • Operating Temperature Range: -40°C to 85°C
  • Lead Material: Tin-plated copper

Detailed Pin Configuration

The V420LA40BP typically has two leads for connection to the circuit. The pin configuration is as follows: 1. Lead 1: Connected to the anode 2. Lead 2: Connected to the cathode

Functional Features

  • Voltage clamping during transient overvoltage events
  • Rapid response to voltage spikes
  • Dissipation of excess energy as heat

Advantages

  • Effective protection against voltage surges
  • Fast response time
  • Wide operating temperature range

Disadvantages

  • Limited lifespan after multiple surge events
  • Requires replacement after significant surge events

Working Principles

The V420LA40BP operates based on the principle of nonlinear resistance, where its resistance decreases as the voltage across it increases. This allows it to divert excess current away from sensitive components, thereby protecting them from damage.

Detailed Application Field Plans

The V420LA40BP is commonly used in the following applications: - Power supply units - Telecommunication equipment - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the V420LA40BP include: - V130LA20BP - V275LA40BP - V510LA40BP - V750LA40BP

In conclusion, the V420LA40BP varistor is a crucial component in safeguarding electronic devices from voltage surges and transient overvoltage conditions. Its high energy absorption capability, fast response time, and wide operating temperature range make it a reliable choice for various applications.

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Énumérez 10 questions et réponses courantes liées à l'application de V420LA40BP dans les solutions techniques

  1. What is the maximum voltage rating of V420LA40BP?

    • The maximum voltage rating of V420LA40BP is 420V.

  2. What is the maximum surge current capability of V420LA40BP?

    • V420LA40BP has a maximum surge current capability of 10,000A.

  3. What is the operating temperature range for V420LA40BP?

    • The operating temperature range for V420LA40BP is -40°C to +85°C.

  4. What are the typical applications for V420LA40BP?

    • V420LA40BP is commonly used in surge protection for power supplies, AC/DC converters, and industrial equipment.

  5. What is the response time of V420LA40BP?

    • The response time of V420LA40BP is less than 5 nanoseconds.

  6. Is V420LA40BP suitable for use in outdoor environments?

    • Yes, V420LA40BP is suitable for outdoor use as it is designed to withstand harsh environmental conditions.

  7. Does V420LA40BP meet any specific industry standards?

    • V420LA40BP complies with UL1449 and IEC 61000-4-5 standards for surge protection devices.

  8. Can V420LA40BP be used in both single-phase and three-phase systems?

    • Yes, V420LA40BP can be used in both single-phase and three-phase systems for surge protection.

  9. What is the expected lifespan of V420LA40BP in typical applications?

    • V420LA40BP has a long lifespan and can provide reliable surge protection for many years under normal operating conditions.

  10. Are there any special installation considerations for V420LA40BP?

    • It is recommended to follow the manufacturer's guidelines for proper installation and grounding to ensure optimal performance of V420LA40BP.