MF-RG500-0

Overview

The Bourns MF-RG500-0 is a radial, through-hole polymer PTC resettable fuse from the Multifuse MF-RG series. It features a maximum operating voltage of 16V and a hold current (Ih) of 5A. The trip current (It) is specified at 8.5A, with a maximum fault current rating of 100A. Initial resistance is typically 15 mΩ, rising to a maximum of 34 mΩ after tripping. The device operates within a temperature range of -40°C to +85°C and carries AEC-Q200 automotive qualification.

Feature Summary

• Polymer positive temperature coefficient technology for automatic circuit protection
• Radial leaded package designed for through-hole mounting applications
• Automotive-grade reliability certified under AEC-Q200 standards

Applications

• Automotive electronic circuit protection
• Overcurrent protection in consumer electronics
• Industrial control system safeguarding

Procurement Notes

Verify the specific suffix designation when ordering, as variants such as MF-RG500-AP-14 may differ in packaging or certification status. Confirm that the selected part meets the required AEC-Q200 compliance if automotive application is intended. Cross-reference datasheet parameters against schematic requirements to ensure adequate fault current handling capabilities.

Selection Notes

Select this component for low-voltage DC circuits requiring high holding currents up to 5A. Ensure the PCB layout accommodates the radial footprint dimensions of 10.40mm x 3.00mm. Consider the thermal environment, as performance characteristics are defined within the -40°C to +85°C operating range. Verify that the initial resistance value aligns with signal integrity or power loss constraints in the design.

Part Context

This part belongs to the Bourns Multifuse MF-RG series of resettable fuses. These devices utilize conductive polymer technology to provide reusable overcurrent protection. The MF-RG series is distinguished by its robust construction and suitability for demanding environments, including those requiring automotive qualification standards.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include MF-RG500-2 and MF-RG500-AP. Other cross-brand equivalents listed in distributor databases include Littelfuse 16R500GU and Eaton PTR016V0500-BK. Verify pinout compatibility and physical dimensions before substitution.