MF-RX110/72-0-14

Overview

The MF-RX110/72-0-14 is a radial leaded PTC resettable fuse from the Bourns MF-RX/72 series. It features a hold current of 1.1 A and a trip current of 2.2 A, with a maximum voltage rating of 72 VDC. The device has a maximum rated current of 40 A and an initial resistance of 250 mΩ. It operates within a temperature range of -40°C to +85°C and utilizes a 5.1 mm lead spacing for PCB mounting.

Feature Summary

• Provides automatic circuit protection through self-resetting polymeric positive temperature coefficient technology
• Designed for reliable surface or through-hole integration on printed circuit boards
• Maintains stable electrical characteristics across specified industrial operating temperatures

Applications

• Overcurrent protection in portable electronic devices
• Circuit safeguarding in consumer audio and video equipment
• Protection for peripheral interfaces and communication ports

Procurement Notes

Verify that the specific suffix '-14' corresponds to the required lead form and packaging configuration for your assembly process. Confirm that the 72VDC voltage rating aligns with your system's maximum potential. Ensure the 1.1A hold current meets the continuous operational requirements without unintended tripping during normal load conditions.

Selection Notes

Select this component when a low-profile, radial leaded solution is required for circuits operating up to 72VDC. The 1.1A hold current suits applications needing moderate overcurrent tolerance. Consider the 250 mΩ resistance impact on power loss if efficiency is critical. Validate thermal management capabilities given the -40°C to +85°C operational limits.

Part Context

This part belongs to the MF-RX/72 series of resettable fuses manufactured by Bourns Inc. The series offers various hold currents and voltage ratings tailored for different protection needs. The radial leaded format facilitates easy insertion into standard PCB layouts, providing a robust alternative to surface-mount options for specific mechanical constraints.

Replacement Considerations

Direct substitutes include other MF-RX/72 series variants with identical voltage ratings but different hold currents, such as MF-RX135/72-0-14 or MF-RX080/72-0-14, provided the current threshold matches the design requirements. Cross-series replacements require careful verification of physical dimensions and electrical parameters.