MF-R800-0-14

Overview

The Bourns MF-R800-0-14 is a PTC self-resettable fuse from the MF-R series, designed for overcurrent protection in electronic circuits. It features an 8A hold current and a 30V DC rated voltage. The component has a trip action current of 16A and a maximum trip time of 18.8 seconds at that current. Initial resistance is typically 5mΩ minimum, rising to a maximum of 30mΩ after tripping. It supports a maximum current of 40A and dissipates up to 4W. The device operates within a temperature range of -40°C to +85°C and utilizes a through-hole package with a 10.2mm pitch.

Feature Summary

• Provides automatic circuit recovery after fault clearance without manual replacement
• Offers dual-mode protection against both overcurrent and excessive temperature conditions
• Ensures low initial resistance to minimize power loss during normal operation

Applications

• Overcurrent protection for portable computer peripheral devices
• Protection circuits for battery-powered consumer electronics
• Surge current limiting in telecommunications equipment

Procurement Notes

Verify the specific suffix codes on the ordering information to confirm lead times and packaging quantities. Ensure the selected variant matches the required voltage and current ratings for your design. Check RoHS compliance status if restricted substances are a constraint. Confirm the package dimensions align with your PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component based on the required hold current and trip characteristics for the target application. Consider the ambient operating temperature range to ensure reliable performance under all conditions. Evaluate the maximum fault current the device must withstand without damage. Verify that the physical package size fits within the available space on the printed circuit board assembly.

Part Context

This part belongs to the MF-R series of resettable fuses manufactured by Bourns Inc. These components are widely used in the electronics industry for providing reusable overcurrent protection. The series offers various current and voltage ratings to suit different circuit requirements. They serve as an alternative to traditional one-time fuses in applications where maintenance access is difficult or inconvenient.

Replacement Considerations

Consult official substitution guides for compatible alternatives within the same family. Verify that any substitute part meets the original electrical specifications and physical dimensions. Ensure the replacement component maintains the same safety certifications and regulatory approvals.