MF-R135 Overview

Product Category

The MF-R135 belongs to the category of resettable fuses, also known as PTC (positive temperature coefficient) thermistors.

Basic Information Overview

• Use: The MF-R135 is used for overcurrent protection in various electronic circuits and devices.
• Characteristics: It has a resettable function, allowing it to return to its normal state after the overcurrent condition is removed. It also offers low resistance in normal operating conditions.
• Package: The MF-R135 is typically housed in a rectangular polymer package with two metal leads for connection.
• 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 tape and reel packaging with quantities varying based on manufacturer specifications.

Specifications

• Hold Current: 1.35A
• Trip Current: 2.7A
• Maximum Voltage: 30V
• Operating Temperature Range: -40°C to 85°C
• Resistance: <0.1Ω in normal conditions

Detailed Pin Configuration

The MF-R135 typically features two leads, one on each end of the rectangular package. The lead configuration may vary slightly based on manufacturer specifications.

Functional Features

• Resettable: Returns to a low-resistance state after the overcurrent condition is removed.
• Overcurrent Protection: Safeguards electronic circuits and devices from excessive current flow.
• Low Resistance: Provides minimal voltage drop during normal operation.

Advantages and Disadvantages

Advantages

• Resettable functionality increases product lifespan.
• Provides reliable overcurrent protection without the need for replacement.
• Low resistance minimizes power loss in normal operating conditions.

Disadvantages

• May have slower response time compared to traditional fuses.
• Trip current may cause nuisance tripping in certain applications.

Working Principles

The MF-R135 operates based on the principle of positive temperature coefficient. 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-R135 is widely used in various electronic applications, including: - Power supplies - Battery packs - Automotive electronics - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

• MF-R160: Higher hold and trip currents for increased protection.
• MF-R110: Lower hold and trip currents for more sensitive applications.
• MF-R200: Higher voltage rating for specific requirements.

In conclusion, the MF-R135 resettable fuse provides reliable overcurrent protection with its unique resettable functionality and low resistance, making it suitable for a wide range of electronic applications.

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