MF-RX185-2-99 Product Overview

Introduction

The MF-RX185-2-99 is a specialized component that belongs to the category of resettable fuses. This entry provides an in-depth overview of its basic information, specifications, 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 design, reliable overcurrent protection
• Package: SMD (Surface Mount Device)
• Essence: Provides overcurrent protection by limiting the flow of current in the circuit
• Packaging/Quantity: Typically packaged in reels with varying quantities

Specifications

• Voltage Rating: 30V
• Hold Current: 1.85A
• Trip Current: 3.7A
• Maximum Current: 40A
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The MF-RX185-2-99 has a standard SMD pin configuration with two terminals for surface mounting onto printed circuit boards. The datasheet provides specific details on the pin layout and orientation.

Functional Features

• Resettable: Automatically resets after the fault condition is removed
• Overcurrent Protection: Limits the current to protect the circuit components
• Compact Design: Space-saving SMD package for modern electronics

Advantages and Disadvantages

Advantages

• Reliable overcurrent protection
• Automatic reset reduces maintenance requirements
• Compact size ideal for space-constrained applications

Disadvantages

• Limited maximum current handling compared to traditional fuses
• Sensitive to temperature variations in extreme environments

Working Principles

The MF-RX185-2-99 operates based on the principle of positive temperature coefficient (PTC) resistance. When an overcurrent condition occurs, the device heats up, causing its resistance to increase and limit 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-RX185-2-99 is commonly used in various electronic devices and systems, including: - Consumer electronics - Automotive electronics - Industrial control systems - Telecommunications equipment

Detailed and Complete Alternative Models

• MF-RX110-2-99: Lower hold current variant
• MF-RX250-2-99: Higher hold current variant
• MF-RX185-2-50: Lower voltage rating variant
• MF-RX185-2-120: Higher voltage rating variant

In conclusion, the MF-RX185-2-99 resettable fuse offers reliable overcurrent protection in a compact SMD package, making it suitable for diverse electronic applications.

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