RHEF100-AP

Ptc Resettable Fuses Overview

The Littelfuse RHEF100-AP is a PolySwitch resettable PPTC device from the RHE series, designed for overcurrent protection in PCB-mounted applications. It features radial leads with a 5.8 mm spacing and operates within a temperature range of -40°C to +125°C. Key electrical parameters include a hold current of 1 A, trip current of 1.8 A, maximum voltage of 30 VDC, and a maximum fault current rating of 40 A. The device exhibits a maximum resistance of 430 mΩ and has physical dimensions of 9.7 mm diameter by an unspecified height.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection through solid-state resistance increase upon heating
• Radial leaded form factor facilitates direct PCB mounting
• Resettable functionality eliminates the need for manual fuse replacement after fault clearance

Ptc Resettable Fuses Applications

• Protection of automotive actuators and small motors
• Overcurrent safeguarding for telecommunication circuits and wiring harnesses
• PCB component protection in power supply applications

Ptc Resettable Fuses Procurement Notes

Verify that the specific suffix '-AP' aligns with the required packaging configuration, such as cut tape or bulk, as indicated in official Littelfuse documentation. Confirm RoHS compliance status and agency approvals relevant to your target market before finalizing procurement orders to ensure regulatory adherence.

Ptc Resettable Fuses Selection Notes

Select this component when circuit requirements demand a 1 A hold current and 30 VDC maximum voltage rating. Ensure the application environment remains within the specified -40°C to +125°C operating temperature range. Verify that the 430 mΩ maximum resistance does not introduce unacceptable voltage drop in the protected circuit path during normal operation.

Ptc Resettable Fuses Part Context

The RHEF100-AP belongs to the Littelfuse RHE series of PolySwitch resettable fuses. This series offers various current ratings to match specific requirements in automotive, telecom, and power supply applications. The radial leaded design provides a compact solution for protecting circuits, wiring harnesses, and PCB components from overcurrent events without requiring solder rework for replacement.

Ptc Resettable Fuses Replacement Considerations

Consult official Littelfuse substitution guides for verified equivalent part numbers. Generic cross-references may not guarantee identical thermal characteristics or package dimensions. Validate any substitute against the original specifications for hold current, trip current, and voltage ratings.