RHEF200

Ptc Resettable Fuses Overview

The RHEF200 is a polymeric PTC resettable fuse manufactured by Littelfuse Inc. It features a radial through-hole disc package with dimensions of 9.4 x 3.1 mm. The device has a voltage rating of 16V and a hold current (Ih) of 2A. Key electrical parameters include a trip current of 3.8A, maximum fault current of 100A, power dissipation of 1.4W, and trip time of 4.3s. Initial resistance is 0.045 Ohms.

Ptc Resettable Fuses Feature Summary

• Polymeric PTC technology for overcurrent protection
• Resettable functionality after fault clearance
• Radial leaded disc form factor for through-hole mounting

Ptc Resettable Fuses Applications

• High-volume electronics assembly
• Automotive circuit protection
• Industrial circuit protection

Ptc Resettable Fuses Procurement Notes

Verify the specific Littelfuse datasheet for the RHEF200 to confirm all electrical ratings and mechanical dimensions match the design requirements. Ensure compliance with RoHS and REACH regulations as indicated in manufacturer documentation. Cross-reference part numbers carefully to distinguish between standard and high-density variants if applicable.

Ptc Resettable Fuses Selection Notes

Select this component based on the 16VDC system voltage and 2A continuous current requirement. Verify that the 3.8A trip threshold aligns with the protected circuit's normal operating margin. Confirm that the radial disc package fits the PCB layout constraints and that the 100A maximum fault current capability exceeds potential surge levels.

Ptc Resettable Fuses Part Context

The RHEF200 belongs to the PolySwitch Resettable PPTC Devices family from Littelfuse. This series offers various form factors and termination methods designed for compatibility with high-volume electronics manufacturing processes. The product line provides both resettable and single-use overcurrent protection solutions.

Ptc Resettable Fuses Replacement Considerations

The RHEF200-2 is a documented variant within the same product family. Verify if the -2 suffix indicates a specific performance characteristic or packaging difference before substitution. Consult official Littelfuse documentation to ensure functional equivalence.