EPCOS (TDK)
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B72220S0400K551
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B72220S0400K551

Product Overview

Category

The B72220S0400K551 belongs to the category of varistors, which are electronic components used for protecting circuits from overvoltage conditions.

Use

This varistor is commonly used in electronic circuits to suppress voltage spikes and protect sensitive components from damage.

Characteristics

  • Voltage Rating: 40V
  • Maximum Allowable Voltage: 56V
  • Peak Current Capability: 8000A
  • Operating Temperature Range: -55°C to +125°C
  • Fast response time
  • High energy absorption capability

Package

The B72220S0400K551 varistor is typically available in a disc-shaped package with lead wires for easy integration into circuit boards.

Packaging/Quantity

These varistors are usually packaged in reels or trays, with quantities varying based on the manufacturer's specifications.

Specifications

  • Model: B72220S0400K551
  • Voltage Rating: 40V
  • Maximum Allowable Voltage: 56V
  • Peak Current Capability: 8000A
  • Operating Temperature Range: -55°C to +125°C
  • Dimensions: 7mm diameter

Detailed Pin Configuration

The B72220S0400K551 varistor has two lead wires for connection to the circuit. The pin configuration is as follows: 1. Pin 1: Anode 2. Pin 2: Cathode

Functional Features

  • Suppresses voltage spikes
  • Protects sensitive electronic components
  • Fast response time
  • High energy absorption capability

Advantages and Disadvantages

Advantages

  • Effective protection against overvoltage conditions
  • Fast response time
  • Wide operating temperature range

Disadvantages

  • Limited lifespan under continuous high-energy events
  • Non-linear response to voltage changes

Working Principles

The varistor works by exhibiting a non-linear resistance characteristic, which decreases with increasing voltage. When an overvoltage condition occurs, the varistor conducts current and diverts the excess energy away from the protected circuit.

Detailed Application Field Plans

The B72220S0400K551 varistor is widely used in various electronic applications, including: - Power supplies - Telecommunications equipment - Industrial control systems - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the B72220S0400K551 varistor include: - B72220S0300K101 - B72220S0500K101 - B72220S0600K101

In conclusion, the B72220S0400K551 varistor is a crucial component in electronic circuits, providing essential overvoltage protection and ensuring the reliability of sensitive electronic devices across various industries.

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Énumérez 10 questions et réponses courantes liées à l'application de B72220S0400K551 dans les solutions techniques

  1. What is the B72220S0400K551?

    • The B72220S0400K551 is a type of EPCOS varistor, commonly used for overvoltage protection in technical solutions.

  2. What are the key specifications of the B72220S0400K551?

    • The B72220S0400K551 has a maximum AC voltage of 250V, a maximum DC voltage of 320V, and a nominal varistor voltage of 40V.

  3. How does the B72220S0400K551 provide overvoltage protection?

    • The B72220S0400K551 varistor protects against overvoltage by rapidly changing its resistance in response to voltage spikes, diverting excess current away from sensitive components.

  4. In what applications is the B72220S0400K551 commonly used?

    • The B72220S0400K551 is frequently employed in power supplies, industrial equipment, and consumer electronics to safeguard against transient voltage events.

  5. What is the operating temperature range of the B72220S0400K551?

    • The B72220S0400K551 can operate within a temperature range of -40°C to +85°C, making it suitable for various environmental conditions.

  6. How does the B72220S0400K551 compare to other varistors in terms of performance?

    • The B72220S0400K551 offers high surge current capability and low leakage current, making it a reliable choice for overvoltage protection.

  7. Can the B72220S0400K551 be used in automotive applications?

    • Yes, the B72220S0400K551 is suitable for automotive systems, providing effective overvoltage protection in vehicles.

  8. What are the potential failure modes of the B72220S0400K551?

    • Common failure modes include thermal runaway under sustained overvoltage conditions and degradation of varistor characteristics over time.

  9. Are there any specific mounting or handling considerations for the B72220S0400K551?

    • It is important to follow the manufacturer's guidelines for proper mounting and handling to ensure optimal performance and reliability.

  10. Where can I find detailed technical documentation for the B72220S0400K551?

    • Detailed technical information, including datasheets and application notes, can be obtained from the manufacturer's website or authorized distributors.