MF-R700-2

Overview

The Bourns MF-R700-2 is a polymeric positive temperature coefficient (PPTC) resettable fuse designed for through-hole mounting. It features a hold current of 7 A and a trip current of 14 A, with a maximum voltage rating of 30 VDC. The device supports a maximum fault current of 40 A and exhibits a minimum resistance of 5 mΩ. Operating within a temperature range of -40°C to +85°C, it utilizes radial leads spaced at 10.2 mm. The component measures 29.8 mm in length, 22.1 mm in width, and 3 mm in height, complying with AEC-Q200 standards for automotive applications.

Feature Summary

• Provides automatic circuit protection by increasing resistance in response to overcurrent or overheating conditions
• Self-resetting functionality eliminates the need for manual replacement after fault clearance
• Complies with AEC-Q200 qualification standards for automotive electronic components

Applications

• Automotive electronics circuits requiring AEC-Q200 compliance
• Overcurrent protection for power distribution lines
• Battery management system circuit safeguarding

Procurement Notes

Verify that the specific part number suffix matches the required lead frame configuration and packaging format. Confirm that the thermal derating curves align with the intended operating environment temperatures. Ensure the PCB footprint accommodates the specified radial lead spacing and physical dimensions to prevent mechanical interference during assembly.

Selection Notes

Select this component when a high-current resettable fuse is required for automotive-grade applications. Ensure the hold current exceeds the normal operating current while remaining below the trip threshold. Verify that the maximum voltage rating covers the peak circuit voltage and that the package size fits the designated PCB area without obstructing adjacent components.

Part Context

This model belongs to the MF series of PPTC resettable fuses manufactured by Bourns Inc. The series provides reusable overcurrent protection solutions for various industrial and consumer electronics. The MF-R700-2 variant specifically addresses high-current requirements with robust thermal stability and standardized automotive qualification.

Replacement Considerations

Direct substitutes include other AEC-Q200 qualified PPTC fuses with identical 7 A hold current and 30 VDC ratings. Verify that alternative parts match the radial lead spacing and physical envelope dimensions to ensure compatibility with existing PCB footprints.