MF-R090-2-9

Ptc Resettable Fuses Overview

The Bourns MF-R090-2-9 is a radial leaded PPTC resettable fuse from the Multifuse MF-R/90 series. It features a 900 mA hold current and a 1.8 A trip current, rated for up to 60 VDC. The device has a maximum resistance of 310 mOhms and a fault current rating of 40 A. Operating temperatures range from -40°C to +85°C with a 1 W power dissipation capability. Physical dimensions include an 11.7 mm diameter and 5.1 mm lead spacing.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit protection against overcurrent conditions through polymer positive temperature coefficient technology.
• Offers reliable resettable functionality that restores normal operation after fault clearance without manual intervention.
• Designed for PCB mounting with radial leads to facilitate integration into standard electronic assemblies.

Ptc Resettable Fuses Applications

• Overcurrent protection in consumer electronics circuits
• Surge protection for industrial control systems
• Power supply input protection in telecommunications equipment

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix designation during procurement as it may indicate distinct packaging or material variations within the same electrical specification family. Confirm RoHS compliance status directly with the manufacturer documentation before finalizing component selection for regulated markets. Ensure the ordering quantity matches the available reel or cut tape configurations provided by authorized distributors.

Ptc Resettable Fuses Selection Notes

Select this component when designing circuits requiring a 900 mA continuous operating current with a 60 VDC maximum voltage rating. Consider the 310 mOhms initial resistance for voltage drop calculations in low-voltage applications. Evaluate the thermal environment to ensure the operating temperature range of -40°C to +85°C meets system requirements under all expected load conditions.

Ptc Resettable Fuses Part Context

This part belongs to the Bourns Multifuse MF-R/90 series of radial leaded PTC resettable fuses. The series provides cost-effective overcurrent protection solutions for various electronic applications. The MF-R090-2-9 variant specifically targets designs needing precise 900 mA hold current characteristics within a compact radial package format suitable for through-hole mounting technologies.

Ptc Resettable Fuses Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Verify compatibility with existing footprints and electrical parameters if considering alternative manufacturers. Consult official Bourns documentation for any direct cross-reference recommendations.

Ptc Resettable Fuses FAQ

What is the maximum fault current rating for the MF-R090-2-9?

The device has a maximum fault current rating of 40 A.

Does the MF-R090-2-9 support surface mount installation?

No, this specific model utilizes radial leads designed for PCB through-hole mounting.