MF-R135-AP-99

Product Overview

Category

The MF-R135-AP-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.
• Fast response time: Provides quick protection against overcurrent events.
• Compact size: Allows for easy integration into circuit designs.
• Reliable performance: Offers consistent protection over multiple fault cycles.

Package

The MF-R135-AP-99 is typically available in a surface-mount package, making it suitable for automated assembly processes.

Essence

The essence of the MF-R135-AP-99 lies in its ability to provide reliable overcurrent protection while offering the convenience of automatic reset functionality.

Packaging/Quantity

It is commonly supplied in reels or tape and reel packaging, with quantities varying based on manufacturer specifications.

Specifications

• Hold Current: 1.35A
• Trip Current: 2.7A
• Voltage Rating: 30V
• Operating Temperature Range: -40°C to 85°C
• Maximum Time-to-Trip: 60 seconds at 5x rated current

Detailed Pin Configuration

The MF-R135-AP-99 features two terminals for connection within the circuit. It follows a standard pin configuration for surface-mount devices.

Functional Features

• Overcurrent Protection: Limits current flow during fault conditions.
• Automatic Reset: Restores normal operation after fault clearance.
• Thermal Stability: Maintains performance across a wide temperature range.

Advantages and Disadvantages

Advantages

• Reusability: Can withstand multiple fault events without requiring replacement.
• Space-saving: Compact design enables efficient use of PCB real estate.
• 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 current magnitude.

Working Principles

The MF-R135-AP-99 operates based on the PTC effect, where its resistance increases significantly when subjected to overcurrent conditions. This rise in resistance limits the current flow, providing protection to the circuit. Once the fault is cleared, the device cools down and returns to its low-resistance state, allowing normal current flow.

Detailed Application Field Plans

The MF-R135-AP-99 finds application in various electronic systems, including: - Consumer electronics - Automotive electronics - Industrial control systems - Telecommunication equipment

Detailed and Complete Alternative Models

• MF-R1100-AP-99
• MF-R200-AP-99
• MF-R500-AP-99
• MF-R700-AP-99

These alternative models offer varying hold and trip currents to cater to different application requirements.

In conclusion, the MF-R135-AP-99 resettable fuse provides reliable overcurrent protection with the added benefit of automatic reset functionality. Its compact size and reusability make it a preferred choice for a wide range of electronic applications.

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