MF-R055/90-0

Ptc Resettable Fuses Overview

The Bourns MF-R055/90-0 is a radial leaded polymer PTC resettable fuse from the Multifuse series, designed for overcurrent protection in electronic circuits. It features a hold current of 0.55 A and a trip current of 1.1 A, with a maximum voltage rating of 90 VDC. The device operates within a temperature range of -40°C to +85°C and utilizes a standard radial leaded package for through-hole mounting.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit protection against overcurrent conditions without requiring replacement
• Offers robust fault recovery by returning to low resistance state after cooling
• Eliminates nuisance tripping associated with traditional thermal fuses

Ptc Resettable Fuses Applications

• Overcurrent surge protection for high reliability electronic equipment
• Automobile circuitry protection
• Industrial transportation systems
• Communication and security equipment
• Consumer electronic devices

Ptc Resettable Fuses Procurement Notes

Verify that the specific part number matches the required hold and trip currents for your design. Confirm the voltage rating aligns with the system's maximum operating voltage. Ensure the radial leaded package fits the PCB layout constraints. Check for RoHS compliance status if required by project specifications.

Ptc Resettable Fuses Selection Notes

Select this component when space-saving surface mount options are not feasible or when through-hole mounting is preferred for mechanical stability. Consider the 90V DC rating for low-voltage applications. Evaluate the thermal environment to ensure the device can cool sufficiently between fault events to reset properly.

Ptc Resettable Fuses Part Context

This component belongs to the Bourns Multifuse Polymer PTC Resettable Fuses family. These devices are engineered to provide cost-effective and reliable circuit safeguarding. The series includes various packages such as surface mount and axial leaded types, catering to diverse design requirements across automotive, industrial, and consumer markets.

Ptc Resettable Fuses Replacement Considerations

Consult official Bourns documentation for direct cross-reference data. Verify that any substitute maintains identical hold current, trip current, and voltage ratings. Ensure the replacement supports the same operating temperature range and mounting style to guarantee functional compatibility.