MF-R020 Overview

Product Category

The MF-R020 belongs to the category of resettable fuses, also known as PTC (positive temperature coefficient) thermistors.

Basic Information Overview

• Use: The MF-R020 is used for overcurrent protection in various electronic circuits and devices.
• Characteristics: It exhibits a resettable functionality, allowing it to return to its normal state after the overcurrent condition is removed.
• Package: The MF-R020 is typically housed in a rectangular polymer package.
• Essence: Its essence lies in providing reliable overcurrent protection without the need for replacement after a fault condition.
• Packaging/Quantity: It is commonly available in reels or bulk packaging, with quantities varying based on manufacturer specifications.

Specifications

• Hold Current: 0.2A
• Trip Current: 0.4A
• Maximum Voltage: 30V
• Operating Temperature Range: -40°C to 85°C
• Resistance: <1Ω

Detailed Pin Configuration

The MF-R020 typically features two pins for connection within a circuit. Pin 1 is designated for the input connection, while pin 2 is for the output connection.

Functional Features

• Resettable: Automatically returns to a low-resistance state once the overcurrent condition is eliminated.
• Reliable Protection: Safeguards electronic components and circuits from damage due to overcurrent events.
• Compact Design: Occupies minimal space within the circuit layout.

Advantages and Disadvantages

Advantages

• Resettable functionality increases product lifespan.
• Provides reliable overcurrent protection.
• Compact size allows for versatile integration into various circuit designs.

Disadvantages

• Limited maximum voltage compared to some non-resettable fuse alternatives.
• Trip current may not be adjustable, limiting customization options.

Working Principles

The MF-R020 operates based on the principle of positive temperature coefficient. When an overcurrent event occurs, the device's resistance increases, 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-R020 is widely used in: - Consumer electronics - Automotive electronics - Industrial control systems - Power supplies - Battery management systems

Detailed and Complete Alternative Models

• MF-R005: Lower hold and trip currents for more sensitive applications.
• MF-R050: Higher current ratings for heavier-duty circuit protection.
• MF-R110: Designed for higher voltage applications.

In conclusion, the MF-R020 resettable fuse offers reliable overcurrent protection with its resettable functionality and compact design. Its application spans across various industries, making it a versatile choice for circuit protection needs.

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