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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