MF-R075 Overview

Product Category

The MF-R075 belongs to the category of resettable fuses, also known as PTC (positive temperature coefficient) thermistors.

Basic Information Overview

• Use: The MF-R075 is used to protect electrical circuits from overcurrent and short circuit conditions.
• Characteristics: It has a resettable function, meaning it can return to its normal state after the fault condition is removed. It also offers low resistance in normal operating conditions.
• Package: The MF-R075 is typically housed in a rectangular plastic package with two metal leads for connection.
• Essence: Its essence lies in providing reliable overcurrent protection while allowing the circuit to return to normal operation once the fault is cleared.
• Packaging/Quantity: The MF-R075 is commonly available in reels or bulk packaging, with quantities varying based on manufacturer and distributor.

Specifications

• Hold Current: 0.75A
• Trip Current: 1.5A
• Maximum Voltage: 30V
• Operating Temperature Range: -40°C to 85°C
• Resistance: <0.3Ω in normal conditions

Detailed Pin Configuration

The MF-R075 typically has two pins for connection, with the lead configuration depending on the manufacturer's specifications.

Functional Features

• Resettable: Returns to a low-resistance state after the fault is removed.
• Overcurrent Protection: Safeguards the circuit from excessive current flow.
• Reliable Operation: Provides consistent performance over multiple fault cycles.

Advantages and Disadvantages

Advantages

• Resettable functionality increases product lifespan.
• Provides quick response to overcurrent conditions.
• Low resistance in normal operating conditions minimizes power loss.

Disadvantages

• Limited maximum voltage compared to some non-resettable fuses.
• Trip current may not be adjustable, limiting flexibility in certain applications.

Working Principles

The MF-R075 operates based on the principle of PTC thermistor behavior. 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-R075 is commonly used in various electronic circuits, including: - Power supplies - Battery packs - Motor control systems - LED lighting - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models to the MF-R075 include: - MF-R050: Lower hold and trip currents for more sensitive applications. - MF-R110: Higher current ratings for heavier-duty circuits. - MF-R200: Increased maximum voltage for applications requiring higher voltage tolerance.

In conclusion, the MF-R075 resettable fuse provides reliable overcurrent protection with the added benefit of resettable functionality, making it suitable for a wide range of electronic applications.

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