Littelfuse Inc.
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RUEF250U
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RUEF250U

Product Overview

Category

The RUEF250U belongs to the category of resettable fuses.

Use

It is used for overcurrent protection in various electronic circuits and devices.

Characteristics

  • Resettable
  • Low resistance
  • Fast response time

Package

The RUEF250U is typically available in a surface-mount package.

Essence

The essence of the RUEF250U lies in its ability to provide reliable overcurrent protection while being resettable, eliminating the need for replacement after a fault condition.

Packaging/Quantity

It is commonly packaged in reels and is available in varying quantities depending on the manufacturer.

Specifications

  • Maximum Voltage: 30V
  • Hold Current: 2.5A
  • Trip Current: 5A
  • Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The RUEF250U typically has two pins for surface-mount installation. The specific pin configuration may vary based on the manufacturer's specifications.

Functional Features

  • Overcurrent protection
  • Resettable functionality
  • Low resistance for minimal power loss

Advantages

  • Eliminates the need for frequent fuse replacements
  • Fast response time to overcurrent conditions
  • Low power dissipation

Disadvantages

  • Limited maximum voltage rating
  • Sensitive to temperature extremes

Working Principles

The RUEF250U operates based on the principle of positive temperature coefficient (PTC) resistance. When an overcurrent condition occurs, the resistance of the device increases, limiting the current flow. Once the fault is removed, the device resets itself, allowing normal operation to resume.

Detailed Application Field Plans

The RUEF250U is commonly used in: - Consumer electronics - Automotive electronics - Industrial control systems - Power supplies

Detailed and Complete Alternative Models

  • RUEF300U
  • RUEF200U
  • RUEF350U

In conclusion, the RUEF250U is a resettable fuse that provides reliable overcurrent protection with its unique characteristics and functional features. Its application spans across various industries, making it a versatile component in electronic circuit protection.

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Перечислите 10 распространенных вопросов и ответов, связанных с применением RUEF250U в технических решениях.

  1. What is RUEF250U?

    • RUEF250U is a resettable polymeric positive temperature coefficient (PPTC) device used for overcurrent protection in various electronic circuits.

  2. What is the maximum voltage and current rating of RUEF250U?

    • The maximum voltage rating of RUEF250U is 30V, and the maximum current rating is 40A.

  3. In what type of applications can RUEF250U be used?

    • RUEF250U can be used in applications such as battery packs, power supplies, and automotive electronics for overcurrent protection.

  4. How does RUEF250U work?

    • RUEF250U works by increasing its resistance when the current exceeds its rated value, effectively limiting the current flow and protecting the circuit.

  5. What is the typical response time of RUEF250U?

    • The typical response time of RUEF250U is less than 1 second when subjected to an overcurrent condition.

  6. Can RUEF250U be used in high-temperature environments?

    • Yes, RUEF250U is designed to operate in high-temperature environments and can withstand elevated temperatures without compromising its performance.

  7. Is RUEF250U suitable for use in automotive applications?

    • Yes, RUEF250U is suitable for automotive applications and complies with relevant industry standards for safety and reliability.

  8. What are the advantages of using RUEF250U over traditional fuses?

    • RUEF250U offers the advantage of being resettable, eliminating the need for replacement after a fault is cleared, thus reducing maintenance and downtime.

  9. Can RUEF250U be used in conjunction with other protective devices?

    • Yes, RUEF250U can be used in combination with other protective devices to provide comprehensive overcurrent protection in complex electronic systems.

  10. Where can I find detailed technical specifications and application guidelines for RUEF250U?

    • Detailed technical specifications and application guidelines for RUEF250U can be found in the product datasheet provided by the manufacturer or on their official website.