MF-R700

Overview

The Bourns MF-R700 is a radial leaded polymer PTC resettable fuse designed for overcurrent protection in electronic circuits. It operates with a maximum voltage of 30 VDC and maintains a holding current of 7 A. The device trips at 14 A and can withstand a maximum fault current of 40 A. Its initial resistance is typically 20 mΩ, and it functions within an operating temperature range of -40°C to +85°C. The component features a 10.2 mm lead spacing and measures 18 mm in height.

Feature Summary

• Provides automatic circuit recovery after fault conditions without manual replacement
• Offers robust overcurrent protection against potential damage to critical circuitry
• Features radial through-hole mounting for standard PCB integration

Applications

• Overcurrent protection for portable electronics
• Safeguarding peripheral interfaces in computing devices
• Protection of battery-powered equipment circuits

Procurement Notes

Verify the specific suffix codes on the datasheet to confirm exact electrical tolerances and agency approvals before procurement. Ensure the selected variant matches the required voltage and current ratings for the target application. Confirm RoHS compliance status if environmental regulations apply to the manufacturing process.

Selection Notes

Select this component when a resettable solution is preferred over traditional fuses to reduce maintenance costs. Ensure the circuit's normal operating current remains below the 7 A holding current threshold. Verify that the expected fault current does not exceed the 40 A maximum trip rating to prevent device failure.

Part Context

This part belongs to the Bourns Multifuse series, which provides polymer PTC resettable fuses for various industrial and consumer applications. The series is recognized by major safety agencies including UL, CSA, and TUV, ensuring compliance with international safety standards for electronic components used in global markets.

Replacement Considerations

The Littelfuse RLD30P700UF is documented as a similar replacement option. Verify pin compatibility and thermal characteristics before substitution.