MF-R025-0-99

Product Overview

Category

The MF-R025-0-99 belongs to the category of resettable fuses, also known as PTC (positive temperature coefficient) thermistors.

Use

It is used to protect electrical circuits from overcurrent and short circuit conditions by limiting the flow of current in the event of a fault.

Characteristics

• Resettable: The fuse automatically resets once the fault condition is removed.
• Compact: Small form factor for easy integration into electronic circuits.
• Reliable: Provides consistent protection against overcurrent events.
• Temperature-sensitive: The resistance of the fuse increases with temperature, providing additional protection.

Package

The MF-R025-0-99 is typically available in tape and reel packaging for automated assembly processes.

Essence

The essence of the MF-R025-0-99 lies in its ability to safeguard electronic circuits from damage due to excessive current flow.

Packaging/Quantity

The fuse is commonly packaged in reels containing a specified quantity, such as 2000 pieces per reel.

Specifications

• Hold Current: 250mA
• Trip Current: 500mA
• Voltage Rating: 60V
• Operating Temperature Range: -40°C to 85°C
• Maximum Time-to-Trip: 20 seconds at 200% of rated current

Detailed Pin Configuration

The MF-R025-0-99 features two terminals for connection within the circuit. The pin configuration is as follows: - Pin 1: Input terminal - Pin 2: Output terminal

Functional Features

• Overcurrent Protection: Automatically limits current flow during overcurrent events.
• Self-Recovery: Resets automatically after the fault condition is resolved.
• Fast Response: Quickly reacts to overcurrent situations to prevent damage to the circuit.

Advantages and Disadvantages

Advantages

• Reusability: Can be reset multiple times, unlike traditional fuses.
• Space-Saving: Compact size allows for efficient use of PCB space.
• Cost-Effective: Eliminates the need for frequent fuse replacements.

Disadvantages

• Limited Voltage Rating: Not suitable for high-voltage applications.
• Trip Time Variation: Trip time may vary based on ambient temperature and fault conditions.

Working Principles

The MF-R025-0-99 operates based on the principle of PTC thermistor behavior. When the current exceeds the trip threshold, the thermistor heats up, causing its resistance to increase significantly, thereby limiting the current flow through the circuit. Once the fault is removed, the thermistor cools down and returns to its low-resistance state.

Detailed Application Field Plans

The MF-R025-0-99 is widely used in various electronic devices and systems, including: - Consumer Electronics: Such as smartphones, tablets, and laptops. - Automotive Electronics: In vehicle control units and entertainment systems. - Industrial Equipment: Including power supplies and control panels.

Detailed and Complete Alternative Models

• MF-RX025/72-0: Similar resettable fuse with a higher voltage rating.
• MF-MSMF050/24X-2: Resettable fuse with a lower hold current for specific applications.
• MF-USMF110/33-2: Higher hold current variant suitable for industrial applications.

In conclusion, the MF-R025-0-99 resettable fuse offers reliable overcurrent protection with the added advantage of automatic reset, making it a valuable component in various electronic applications.

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