Littelfuse Inc.
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V175LA2PX2855
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V175LA2PX2855 Encyclopedia Entry

Product Overview

Category

The V175LA2PX2855 belongs to the category of varistors, which are electronic components used to protect circuits from overvoltage conditions.

Use

This varistor is commonly used in electronic circuits to suppress voltage spikes and transient surges, thereby safeguarding sensitive components from damage.

Characteristics

  • Voltage Rating: 175V
  • Peak Current: 4500A
  • Energy Absorption: 85J
  • Operating Temperature: -40°C to +85°C

Package

The V175LA2PX2855 varistor is typically available in a disc-shaped package with leads for easy integration into circuit boards.

Essence

The essence of this varistor lies in its ability to rapidly respond to overvoltage events and divert excess energy away from the protected circuit.

Packaging/Quantity

These varistors are commonly packaged in reels or trays, with quantities varying based on manufacturer specifications.

Specifications

  • Voltage Rating: 175V
  • Maximum Allowable Voltage: 340V
  • Clamping Voltage: 395V
  • Peak Current: 4500A
  • Energy Absorption: 85J
  • Capacitance: 1000pF
  • Lead Spacing: 7.5mm

Detailed Pin Configuration

The V175LA2PX2855 varistor typically has two leads, with one lead connected to each end of the disc-shaped component.

Functional Features

  • Transient Suppression: Effectively clamps transient voltage spikes to safe levels.
  • Fast Response Time: Rapidly responds to overvoltage events to protect downstream components.
  • High Energy Absorption: Capable of dissipating significant amounts of energy during surge events.

Advantages and Disadvantages

Advantages

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

Disadvantages

  • Limited lifespan when subjected to repeated surges
  • Non-linear response to voltage changes

Working Principles

The V175LA2PX2855 varistor operates based on the principle of voltage-dependent resistance. When the voltage across the varistor exceeds its threshold, it conducts current and diverts excess energy away from the protected circuit.

Detailed Application Field Plans

Power Supplies

Used in power supply circuits to protect against voltage surges and lightning-induced transients.

Industrial Equipment

Integrated into industrial control systems to safeguard sensitive electronics from voltage fluctuations.

Telecommunications

Utilized in telecommunications equipment to mitigate the impact of lightning strikes and power line disturbances.

Detailed and Complete Alternative Models

  • V130LA20AP: 130V Varistor with similar characteristics
  • V250LA20A: 250V Varistor with higher voltage rating
  • V175LA10A: 175V Varistor with lower peak current rating

In conclusion, the V175LA2PX2855 varistor serves as a crucial component in electronic circuits, providing essential protection against voltage transients and surges. Its robust characteristics and versatile applications make it a valuable asset in various industries.

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Énumérez 10 questions et réponses courantes liées à l'application de V175LA2PX2855 dans les solutions techniques

  1. What is the V175LA2PX2855 used for?

    • The V175LA2PX2855 is a metal oxide varistor (MOV) commonly used for overvoltage protection in electronic circuits and power systems.

  2. What are the key specifications of the V175LA2PX2855?

    • The V175LA2PX2855 has a maximum AC voltage of 130V, a maximum DC voltage of 175V, and a peak current of 4500A.

  3. How does the V175LA2PX2855 provide overvoltage protection?

    • The V175LA2PX2855 acts as a voltage-dependent resistor, conducting current when the voltage exceeds its threshold, thereby diverting excess energy away from sensitive components.

  4. What are the typical applications of the V175LA2PX2855?

    • The V175LA2PX2855 is commonly used in surge protectors, power supplies, industrial equipment, and telecommunications systems to safeguard against voltage spikes and surges.

  5. What are the operating temperature and storage conditions for the V175LA2PX2855?

    • The V175LA2PX2855 typically operates within a temperature range of -40°C to 85°C and should be stored in a dry environment at temperatures between -40°C and 125°C.

  6. How does the V175LA2PX2855 compare to other MOVs in terms of performance?

    • The V175LA2PX2855 offers high surge current capability, low leakage current, and excellent energy absorption characteristics, making it suitable for demanding overvoltage protection applications.

  7. Can the V175LA2PX2855 be used in automotive electronics?

    • Yes, the V175LA2PX2855 can be employed in automotive electronics to protect sensitive components from voltage transients and electrical disturbances.

  8. What precautions should be taken when integrating the V175LA2PX2855 into a circuit?

    • It is important to ensure proper grounding, adequate thermal management, and compliance with safety standards when incorporating the V175LA2PX2855 into a circuit.

  9. Are there any reliability tests or certifications associated with the V175LA2PX2855?

    • The V175LA2PX2855 may undergo various reliability tests such as temperature cycling, humidity testing, and surge endurance, and it may hold certifications like UL and CSA for specific applications.

  10. Where can I find detailed technical documentation for the V175LA2PX2855?

    • Detailed technical specifications, application notes, and datasheets for the V175LA2PX2855 can be obtained from the manufacturer's website or by contacting their technical support team.