MF-NSMF012/48X-2

Ptc Resettable Fuses Overview

The Bourns MF-NSMF012/48X-2 is a surface-mount PTC resettable fuse from the MF-NSMF series, designed for high-density circuit protection. It features a 1206 (3216 metric) footprint with dimensions of 3.4mm length, 1.8mm width, and 0.7mm height. The device operates at a maximum voltage of 48VDC with a hold current of 0.12A and a trip current of 0.25A. It has a maximum resistance of 8.5Ω and is rated for a maximum fault current of 100A. Operating temperatures range from -40°C to +85°C, and it holds AEC-Q200 qualification.

Ptc Resettable Fuses Feature Summary

• Compact 1206 footprint design minimizes board space requirements
• Symmetrical construction allows flexible orientation during assembly
• Low profile structure supports dense surface-mount applications
• Automotive-grade reliability through AEC-Q200 qualification

Ptc Resettable Fuses Applications

• Automotive electronics circuit protection
• Portable device power line safeguarding
• Industrial control system overcurrent protection

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix '48X' against official Bourns documentation to confirm the 48VDC rating and exact electrical characteristics. Ensure the component matches the required AEC-Q200 automotive qualification standards for your application. Cross-reference the datasheet for precise thermal derating curves and reflow soldering profiles to guarantee reliable performance in final assembly.

Ptc Resettable Fuses Selection Notes

Select this component when a low-profile, automotive-grade PTC fuse is required for 48VDC systems. The 1206 package suits designs with strict spatial constraints. Verify that the 0.12A hold current aligns with normal operating loads and that the 8.5Ω maximum resistance does not exceed allowable voltage drop limits in the protected circuit path.

Ptc Resettable Fuses Part Context

This part belongs to the MF-NSMF series of high-density PTC resettable fuses. The series is characterized by its small size, fast response times, and compliance with automotive stress tests. It serves as a reusable alternative to traditional fusible links in modern electronic assemblies requiring robust overcurrent protection.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include other MF-NSMF series variants with matching 1206 footprints and similar electrical ratings. Verify compatibility with existing PCB land patterns and ensure equivalent AEC-Q200 certification levels before substitution.