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RUEF250U-2

RUEF250U-2

Introduction

The RUEF250U-2 is a component belonging to the category of resettable fuses. This entry provides an overview of its basic information, specifications, detailed pin configuration, functional features, advantages and disadvantages, working principles, detailed application field plans, and alternative models.

Basic Information Overview

  • Category: Resettable Fuse
  • Use: Overcurrent protection in electronic circuits
  • Characteristics: Resettable, compact, reliable
  • Package: SMD (Surface Mount Device)
  • Essence: Provides overcurrent protection by interrupting the flow of current when it exceeds a certain threshold
  • Packaging/Quantity: Typically available in reels of 3000 units

Specifications

  • Maximum Voltage: 30V
  • Hold Current: 2.5A
  • Trip Current: 5A
  • Operating Temperature Range: -40°C to 85°C
  • Resistance: <0.1Ω

Detailed Pin Configuration

The RUEF250U-2 typically has two pins for surface mounting onto a PCB. The specific pin configuration is as follows: - Pin 1: Connected to the positive terminal of the circuit - Pin 2: Connected to the negative terminal of the circuit

Functional Features

  • Resettable: Automatically resets after the fault condition is removed
  • Overcurrent Protection: Safeguards electronic circuits from excessive current flow
  • Compact Design: Space-efficient for modern electronic devices
  • Reliable Operation: Ensures consistent performance under varying conditions

Advantages and Disadvantages

Advantages

  • Provides automatic reset, eliminating the need for manual intervention
  • Compact size allows for integration into small electronic devices
  • Offers reliable overcurrent protection for sensitive electronic components

Disadvantages

  • Limited maximum voltage and current ratings compared to traditional fuses
  • May have a higher initial cost compared to non-resettable fuses

Working Principles

The RUEF250U-2 operates based on the principle of positive temperature coefficient (PTC) behavior. When the current exceeds the trip current, the device heats up, causing its resistance to increase significantly, thereby limiting the current flow. Once the fault condition is removed, the device cools down and returns to its low-resistance state.

Detailed Application Field Plans

The RUEF250U-2 is commonly used in various electronic applications, including: - Consumer electronics - Automotive electronics - Industrial control systems - Telecommunications equipment

Detailed and Complete Alternative Models

Some alternative models to the RUEF250U-2 include: - RUEF400U-2: Higher hold and trip currents for more demanding applications - RUEF200U-2: Lower hold and trip currents for less power-hungry circuits - RUEF250U-3: Variant with different trip characteristics for specific requirements

In conclusion, the RUEF250U-2 is a resettable fuse designed to provide reliable overcurrent protection in electronic circuits. Its compact size, automatic reset feature, and suitability for various applications make it a popular choice among designers and engineers.

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Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät RUEF250U-2 :n soveltamiseen teknisissä ratkaisuissa

  1. What is the RUEF250U-2?

    • The RUEF250U-2 is a resettable fuse designed to protect circuits from overcurrent conditions.
  2. What is the maximum voltage and current rating of RUEF250U-2?

    • The RUEF250U-2 has a maximum voltage rating of 30V and a maximum current rating of 2.5A.
  3. What are the typical applications for RUEF250U-2?

    • Typical applications for RUEF250U-2 include battery protection, USB power lines, and other low-voltage circuit protection.
  4. How does the RUEF250U-2 work?

    • The RUEF250U-2 operates by using a polymer-based PTC (positive temperature coefficient) material that increases resistance when the current exceeds the specified threshold, effectively limiting the current flow.
  5. Is the RUEF250U-2 a one-time use component?

    • No, the RUEF250U-2 is a resettable fuse, meaning it can return to its normal state after the overcurrent condition is removed.
  6. What is the hold current of RUEF250U-2?

    • The hold current of RUEF250U-2 is typically 250mA.
  7. Can the RUEF250U-2 be used in automotive applications?

    • Yes, the RUEF250U-2 is suitable for certain automotive applications where its voltage and current ratings are compatible.
  8. What is the operating temperature range of RUEF250U-2?

    • The RUEF250U-2 has an operating temperature range of -40°C to 85°C.
  9. Does the RUEF250U-2 require any external components for proper operation?

    • No, the RUEF250U-2 is a standalone resettable fuse and does not require additional external components for its basic operation.
  10. Is the RUEF250U-2 RoHS compliant?

    • Yes, the RUEF250U-2 is compliant with the Restriction of Hazardous Substances (RoHS) directive, making it suitable for use in various electronic products.