Littelfuse Inc.
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V250LU40APX2855
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V250LU40APX2855 Product Overview

Basic Information Overview

  • Category: Electronic Component
  • Use: Surge Protection
  • Characteristics: High surge current capability, low clamping voltage, compact design
  • Package: Axial leaded package
  • Essence: Provides protection against transient overvoltage events
  • Packaging/Quantity: Typically packaged in reels or bulk quantities

Specifications

  • Peak Pulse Power: 250W
  • Standoff Voltage: 40V
  • Breakdown Voltage: 44.4V
  • Clamping Voltage: 64.5V
  • Peak Pulse Current: 6.4A
  • Operating Temperature Range: -55°C to +175°C

Detailed Pin Configuration

  • Pin 1: Anode
  • Pin 2: Cathode

Functional Features

  • Provides robust surge protection for sensitive electronic components
  • Fast response time to transient overvoltage events
  • Low leakage current under normal operating conditions

Advantages and Disadvantages

Advantages

  • High surge current capability
  • Low clamping voltage
  • Compact design
  • Fast response time

Disadvantages

  • Limited peak pulse power compared to some alternative models

Working Principles

The V250LU40APX2855 operates based on the principle of avalanche breakdown, where it rapidly diverts excess voltage away from the protected circuit when a transient overvoltage event occurs.

Detailed Application Field Plans

  • Telecommunications equipment
  • Industrial control systems
  • Automotive electronics
  • Consumer electronics

Detailed and Complete Alternative Models

  • V130LA20APX2855
  • V275LA40APX2855
  • V320LA40APX2855

This surge protection component is commonly used in various applications due to its high surge current capability and low clamping voltage. It provides reliable protection against transient overvoltage events, making it suitable for use in telecommunications equipment, industrial control systems, automotive electronics, and consumer electronics. While it offers several advantages such as compact design and fast response time, it has a limited peak pulse power compared to some alternative models. The V250LU40APX2855 operates based on the principle of avalanche breakdown, swiftly diverting excess voltage away from the protected circuit during transient overvoltage events.

قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق V250LU40APX2855 في الحلول التقنية

  1. What is V250LU40APX2855?

    • V250LU40APX2855 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 V250LU40APX2855 work?

    • V250LU40APX2855 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 V250LU40APX2855?

    • V250LU40APX2855 is commonly used in surge protection devices, power supplies, industrial equipment, and electronic appliances to safeguard against transient voltage spikes.

  4. What are the key specifications of V250LU40APX2855?

    • The key specifications of V250LU40APX2855 include its maximum voltage rating, energy absorption capability, response time, and operating temperature range.

  5. How do I select the right V250LU40APX2855 for my application?

    • To select the appropriate V250LU40APX2855, consider the maximum expected voltage transients, energy levels, and the required response time for protection.

  6. What are the advantages of using V250LU40APX2855 in technical solutions?

    • V250LU40APX2855 offers fast response to transient overvoltages, high energy absorption capability, compact size, and cost-effectiveness compared to other protective devices.

  7. Are there any limitations or considerations when using V250LU40APX2855?

    • It's important to consider the varistor's aging characteristics, derating with temperature, and potential failure modes when designing with V250LU40APX2855.

  8. Can V250LU40APX2855 be used in both AC and DC circuits?

    • Yes, V250LU40APX2855 can be used in both AC and DC circuits, but it's essential to ensure that the varistor's voltage rating and polarity are suitable for the application.

  9. How should V250LU40APX2855 be mounted in a circuit?

    • V250LU40APX2855 should be securely mounted to the circuit board or enclosure using appropriate methods to ensure good electrical contact and heat dissipation.

  10. Where can I purchase V250LU40APX2855 for my technical solution?

    • V250LU40APX2855 can be purchased from authorized distributors, electronic component suppliers, or directly from the manufacturer's website.