MF-R800-005

Overview

The Bourns MF-R800-005 is a radial lead PTC resettable fuse from the Multifuse MF-R series, designed for overcurrent protection in electronic circuits. It features an 8A hold current and a 16A trip current at a maximum operating voltage of 30V DC. The device has a maximum initial resistance of 5mΩ and a post-trip resistance of 30mΩ. With a trip time of 18.8 seconds at trip current, it operates within a temperature range of -40°C to +85°C. The component measures 24.20mm in length and 3.00mm in width, with a lead spacing of 10.2mm.

Feature Summary

• Provides automatic circuit recovery after fault clearance without manual replacement
• Offers high-cycle durability for repeated overcurrent events
• Ensures low power loss through minimal initial resistance during normal operation

Applications

• Overcurrent protection for portable electronic devices
• Protection for battery packs and charging circuits
• Surge protection in telecommunications equipment
• Circuit safeguarding in automotive electronics

Procurement Notes

Verify that the specific suffix '-005' matches the required axial or radial configuration and lead spacing for your PCB layout. Confirm that the 30V DC rating aligns with your system's maximum voltage. Ensure the thermal environment stays within the specified -40°C to +85°C operational limits to maintain accurate tripping characteristics.

Selection Notes

Select this component when a compact, reusable protection solution is needed for low-voltage DC circuits. The 8A hold current suits applications requiring moderate current capacity. Consider the 18.8-second trip time for coordination with other protective devices. Verify that the radial package fits the available board space and mounting constraints.

Part Context

This part belongs to Bourns' Multifuse MF-R series, which specializes in polymer positive temperature coefficient resettable fuses. These components are widely used in consumer electronics and industrial applications where reliable, maintenance-free overcurrent protection is critical. The MF-R series is known for its robust performance across various environmental conditions.

Replacement Considerations

Direct substitutes include other MF-R series variants with matching electrical ratings. Check datasheets for equivalent hold and trip currents. Ensure the replacement part supports the same voltage rating and package dimensions to fit existing footprints.