MF-R055/90U-0

Ptc Resettable Fuses Overview

The Bourns MF-R055/90U-0 is a resettable fuse from the MF-USHT Series, designed for high-temperature environments. It features a hold current of 55 mA and a trip current of 110 mA. The device operates within an extended temperature range up to +155 °C and maintains a low resistance of 90 mOhms maximum. Rated at 6 VDC, it provides overcurrent protection with a quick response time. This component utilizes polymer technology for reliable circuit safeguarding in demanding applications.

Ptc Resettable Fuses Feature Summary

• High-temperature operation capability up to 155 degrees Celsius
• Polymer positive temperature coefficient (PPTC) technology
• Compact surface-mount design for space-constrained circuits
• Reversible protection action after fault condition removal

Ptc Resettable Fuses Applications

• Automotive electronics requiring AEC-Q200 compliance
• Industrial equipment operating in high thermal conditions
• Portable devices needing compact overcurrent protection
• Telecommunications infrastructure components

Ptc Resettable Fuses Procurement Notes

Verify that the specific part number matches the required hold and trip currents for your circuit design. Confirm the voltage rating aligns with system specifications. Ensure the package type meets assembly requirements. Check for RoHS compliance status if environmental regulations apply. Validate supplier authenticity through authorized channels to guarantee component integrity and performance consistency.

Ptc Resettable Fuses Selection Notes

Select this component when high-temperature stability is critical for overcurrent protection. Consider the hold current margin relative to normal operating loads. Evaluate the trip current threshold against potential surge conditions. Assess the physical size constraints for PCB layout compatibility. Review the recovery characteristics to ensure suitability for automatic reset scenarios without manual intervention.

Ptc Resettable Fuses Part Context

This part belongs to the MF-USHT Series of high-temperature PPTC resettable fuses by Bourns. These devices are engineered for robust performance in harsh environments where standard polymeric fuses may fail. The series offers enhanced thermal endurance compared to conventional resettable fuses, making them suitable for automotive and industrial sectors with strict reliability standards.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes must match the 55 mA hold current and 90 mOhm resistance. Verify equivalent voltage ratings and temperature capabilities. Cross-reference package dimensions for mechanical fit. Ensure similar trip characteristics and response times. Consult manufacturer cross-reference lists for validated alternative part numbers with identical electrical profiles.