MF-RX250-2-99

Introduction

The MF-RX250-2-99 is a component belonging to the category of resettable fuses. This entry provides an overview of its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

• Category: Resettable Fuse
• Use: Overcurrent Protection
• Characteristics: Resettable, Low Resistance, Fast Response
• Package: Surface Mount
• Essence: Provides overcurrent protection in electronic circuits
• Packaging/Quantity: Typically packaged in reels of 3000 units

Specifications

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

Detailed Pin Configuration

The MF-RX250-2-99 has two pins for surface mount installation. Pin 1 is the input terminal, and pin 2 is the output terminal.

Functional Features

• Resettable: Automatically resets after the fault condition is removed
• Low Resistance: Minimizes power loss in normal operation
• Fast Response: Quickly trips in the event of overcurrent

Advantages and Disadvantages

Advantages

• Resettable nature increases longevity
• Low resistance minimizes power dissipation
• Fast response protects sensitive components

Disadvantages

• Limited hold current compared to traditional fuses
• Sensitive to voltage fluctuations

Working Principles

The MF-RX250-2-99 operates based on the principle of positive temperature coefficient (PTC). When an overcurrent condition occurs, the device heats up, causing its resistance to increase and effectively limiting the current flow. Once the fault is removed, the device cools down and returns to its low-resistance state.

Detailed Application Field Plans

The MF-RX250-2-99 is commonly used in various electronic devices and systems, including: - Consumer Electronics - Automotive Electronics - Industrial Control Systems - Telecommunication Equipment

Detailed and Complete Alternative Models

• MF-RX500-2-99: Higher hold and trip currents
• MF-RX200-2-99: Lower hold and trip currents
• MF-RX300-2-99: Intermediate hold and trip currents

In conclusion, the MF-RX250-2-99 resettable fuse offers valuable overcurrent protection with its resettable nature, low resistance, and fast response. While it has limitations in terms of hold current and sensitivity to voltage fluctuations, its working principle and diverse application field plans make it a crucial component in modern electronic systems.

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