MF-R250-0-99

Product Overview

Category

The MF-R250-0-99 belongs to the category of resettable fuses, also known as PTC (positive temperature coefficient) thermistors.

Use

These resettable fuses are commonly used in electronic circuits to protect against overcurrent and short-circuit conditions.

Characteristics

• Resettable: The fuse automatically resets once the fault condition is removed.
• Self-Protecting: Provides protection without requiring replacement after a fault.
• Compact: Small form factor suitable for various electronic applications.
• Reliable: Offers consistent performance and protection.

Package

The MF-R250-0-99 is typically available in tape and reel packaging for automated assembly processes.

Essence

The essence of the MF-R250-0-99 lies in its ability to provide reliable overcurrent protection while offering the convenience of automatic reset functionality.

Packaging/Quantity

The MF-R250-0-99 is commonly packaged in reels containing a specific quantity based on industry standards, such as 1000 pieces per reel.

Specifications

• Hold Current: 2.5A
• Trip Current: 5A
• Max Voltage: 30V
• Operating Temperature Range: -40°C to 85°C
• Resistance: <0.1Ω

Detailed Pin Configuration

The MF-R250-0-99 features a standard two-pin configuration, with no polarity requirements, simplifying installation and integration into circuit designs.

Functional Features

• Overcurrent Protection: Safeguards electronic circuits by limiting the current during fault conditions.
• Automatic Reset: Restores normal operation once the fault is cleared, eliminating the need for manual intervention.
• Fast Response Time: Quickly reacts to overcurrent events, minimizing potential damage to sensitive components.

Advantages and Disadvantages

Advantages

• Cost-Effective: Eliminates the need for frequent fuse replacements, reducing maintenance costs.
• Space-Saving: Compact design makes it suitable for space-constrained applications.
• Reliability: Provides consistent protection and performance over multiple fault cycles.

Disadvantages

• Limited Voltage Rating: Suitable for low-voltage applications, may not be ideal for high-voltage circuits.
• Trip Time Variation: Trip current may vary slightly based on environmental conditions.

Working Principles

The MF-R250-0-99 operates based on the PTC effect, where its resistance increases significantly when subjected to overcurrent, limiting the flow of current through the circuit. Once the fault is removed, the device cools down, and its resistance returns to a low value, allowing normal current flow.

Detailed Application Field Plans

The MF-R250-0-99 is widely used in various electronic applications, including: - Consumer Electronics: Such as smartphones, tablets, and laptops. - Automotive Electronics: For overcurrent protection in vehicle systems. - Industrial Control Systems: Providing protection for control circuitry.

Detailed and Complete Alternative Models

• MF-R050-0-99: Lower hold current variant suitable for more sensitive electronics.
• MF-R500-0-99: Higher hold current variant for applications with increased power requirements.
• MF-R1100-0-99: Ultra-high hold current variant for industrial and heavy-duty applications.

In conclusion, the MF-R250-0-99 resettable fuse offers reliable overcurrent protection with the added benefit of automatic reset functionality, making it a versatile choice for a wide range of electronic applications.

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