MF-PSML250/12-2

Ptc Resettable Fuses Overview

The Bourns MF-PSML250/12-2 is a surface-mount polymer positive temperature coefficient (PPTC) resettable fuse from the Multifuse PSML series. It provides overcurrent protection with a hold current of 2.5 A and trip current of 5.0 A at 25°C. The device operates at voltage ratings up to 60 VDC and features a low resistance of 38 mΩ. Designed for harsh environments, it withstands operating temperatures from -40°C to +125°C. The component utilizes a compact SMD package suitable for automated assembly processes.

Ptc Resettable Fuses Feature Summary

• Polymer PTC technology enables automatic circuit restoration after fault clearance
• Low impedance design minimizes power loss during normal operation
• Robust construction supports high-voltage and high-temperature applications
• Compact surface-mount form factor facilitates space-constrained PCB layouts

Ptc Resettable Fuses Applications

• Automotive electronic circuit protection
• High-reliability industrial equipment safeguarding
• Communication system overcurrent defense
• Consumer electronics surge protection

Ptc Resettable Fuses Procurement Notes

Verify that the specific part number matches the required hold current and voltage rating for the target application. Confirm RoHS compliance status and agency certifications such as UL or TÜV are present in the official datasheet. Ensure the ordering suffix corresponds to the correct packaging format, such as cut tape or reel, to align with manufacturing requirements.

Ptc Resettable Fuses Selection Notes

Select this component when designing circuits requiring resettable protection with a 2.5 A nominal holding capacity. Consider the 60 VDC maximum voltage rating and the 38 mΩ internal resistance for thermal management calculations. Evaluate the -40°C to +125°C operating range against environmental conditions. This SMD device is appropriate for applications prioritizing compactness and reusability over single-use fuses.

Ptc Resettable Fuses Part Context

This component belongs to the Bourns Multifuse PSML series, which specializes in surface-mount PPTC devices. The series is engineered for demanding environments, offering robust protection against short circuits and overloads. It serves as a reusable alternative to traditional fusible links, providing cost-effective circuit maintenance in automotive, industrial, and consumer sectors.

Ptc Resettable Fuses Replacement Considerations

Consult official Bourns documentation for direct cross-reference substitutes. Verify that any replacement maintains identical electrical parameters, including hold current, trip current, and voltage ratings. Ensure physical footprint compatibility and thermal characteristics match the original design specifications.