MF-RHT1100-AP-14

Overview

The Bourns MF-RHT1100-AP-14 is a radial leaded PTC resettable fuse from the Multifuse MF-RHT series, designed for high-temperature applications. It features a hold current of 1.1 A and a trip current of 2.2 A at ambient conditions. The device supports a maximum voltage of 16 VDC with a maximum fault current rating of 100 A. Initial resistance is specified at 37 mOhms maximum. It operates within a temperature range of -40°C to +125°C and carries AEC-Q200 qualification for automotive reliability.

Feature Summary

• Provides overcurrent protection through automatic resistance increase upon thermal activation
• Maintains circuit continuity after fault clearance without manual replacement
• Engineered for stable performance in high-temperature environments up to 125°C
• Complies with AEC-Q200 standards for automotive electronic component validation

Applications

• Automotive electronics circuits requiring AEC-Q200 compliance
• High-temperature power supply input protection
• Battery management system overcurrent safeguarding
• Industrial control board circuit protection

Procurement Notes

Verify that the specific suffix AP-14 matches the required packaging format and lead configuration for your assembly process. Confirm AEC-Q200 certification requirements are met for automotive-grade projects. Ensure the 16VDC rating aligns with the system's maximum operating voltage. Check that the 1.1A hold current provides adequate margin for normal operational loads without nuisance tripping.

Selection Notes

Select this component when high-temperature stability is critical, as standard PPTC devices may fail above 85°C. The radial leaded style facilitates through-hole PCB mounting. The 1.1A hold current suits moderate load protection needs. Consider the 37mOhms initial resistance impact on power loss. The AEC-Q200 qualification makes it suitable for automotive replacements where generic industrial fuses are insufficient.

Part Context

This part belongs to Bourns' Multifuse MF-RHT series, which specializes in high-temperature PTC resettable fuses. Unlike the standard MF-R1100-2-14 which is rated for 85°C, the RHT variant extends operation to 125°C. The MF-RHT1100-AP-14 shares the 1.1A electrical profile but differs in package and thermal rating from other series members like the MF-RHT550-2-14.

Replacement Considerations

Direct substitutes include the MF-RHT1100-2-14 if the lower 85°C temperature rating is acceptable for the application. For higher current needs, consider the MF-RHT1500-AP-14. Generic PTC fuses lack AEC-Q200 validation and may not withstand the 125°C environment reliably.