RHEF750

Ptc Resettable Fuses Overview

The Littelfuse RHEF750 is a radial leaded polymeric positive temperature coefficient (PPTC) resettable fuse from the RHE series. Designed for PCB mounting, it features a hold current of 7.5 A and a trip current of 13.1 A. The device supports a maximum voltage of 16 VDC with a maximum fault current rating of 100 A. It exhibits a typical resistance of 22 mΩ and operates within a temperature range of -40°C to +125°C. The component has a radial lead spacing of 5.8 mm and measures 3 mm in height.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit protection through self-resetting functionality upon cooling after fault clearance
• Offers high fault current interruption capability up to 100 A for robust system safety
• Features low on-resistance to minimize power loss during normal operation

Ptc Resettable Fuses Applications

• Overcurrent protection for portable electronic devices
• Protection circuits for battery packs and power supplies
• Interface protection for universal serial bus (USB) ports
• Circuit safeguarding in automotive electronics applications

Ptc Resettable Fuses Procurement Notes

Verify that the specific order matches the Littelfuse manufacturer part number RHEF750 to ensure correct electrical ratings. Confirm that the required hold current of 7.5 A and maximum voltage of 16 VDC align with the target circuit design parameters. Check for RoHS compliance status if environmental regulations apply to the manufacturing process. Ensure the radial package style and 5.8 mm lead spacing are compatible with the printed circuit board layout requirements.

Ptc Resettable Fuses Selection Notes

Select this component when the application requires a resettable overcurrent protector with a 7.5 A continuous load capacity. The 16 VDC voltage rating limits suitability to low-voltage DC systems. Consider the 13.1 A trip threshold to ensure proper sensitivity against short circuits while avoiding nuisance tripping during normal surge currents. Verify thermal management capabilities given the 125°C maximum operating temperature limit.

Ptc Resettable Fuses Part Context

The RHEF750 belongs to the RHE series of PPTC resettable fuses manufactured by Littelfuse. This series utilizes polymeric technology to provide reliable overcurrent protection in a compact radial package. The component serves as an alternative to traditional one-time fusible links, offering reusability after fault conditions are resolved and cooled down.

Ptc Resettable Fuses Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.