MF-R400-AP

Introduction

The MF-R400-AP is a component belonging to the category of resettable fuses. This device is designed to protect electrical circuits from overcurrent and short circuit conditions. Its characteristics, package, essence, packaging/quantity, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models are detailed below.

Basic Information Overview

• Category: Resettable Fuse
• Use: Protection against overcurrent and short circuit conditions
• Characteristics: Resettable, compact design
• Package: SMD (Surface Mount Device)
• Essence: Overcurrent protection
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Hold Current: 4A
• Trip Current: 8A
• Voltage Rating: 30V
• Operating Temperature Range: -40°C to 85°C
• Maximum Time-to-Trip: 60 seconds at 200% of rated current

Detailed Pin Configuration

The MF-R400-AP has a standard SMD pin configuration with two terminals for surface mounting onto PCBs.

Functional Features

• Resettable: The fuse automatically resets after the fault condition is removed.
• Overcurrent Protection: Safeguards the circuit by limiting the current flow during overloads or short circuits.

Advantages and Disadvantages

Advantages

• Resettable functionality increases longevity and reduces maintenance costs.
• Compact design saves space on the PCB.
• Provides reliable protection against overcurrent events.

Disadvantages

• Limited hold current compared to traditional fuses.
• Trip time may be longer than non-resettable fuses in some cases.

Working Principles

The MF-R400-AP operates based on the principle of PTC (Positive Temperature Coefficient). When an overcurrent or short circuit occurs, the resistance of the device increases, limiting the current flow through the circuit. Once the fault is removed, the device cools down and returns to its low-resistance state.

Detailed Application Field Plans

The MF-R400-AP is commonly used in various electronic devices and equipment, including: - Power supplies - Battery packs - LED lighting systems - Consumer electronics - Automotive electronics

Detailed and Complete Alternative Models

• MF-R050: 50mA hold current, 100mA trip current
• MF-R110: 1.1A hold current, 2.2A trip current
• MF-R800: 8A hold current, 16A trip current

In conclusion, the MF-R400-AP resettable fuse offers reliable overcurrent protection with its compact design and resettable functionality. It finds applications in diverse electronic systems and is complemented by alternative models catering to different current requirements.

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