RHEF1500-2

Ptc Resettable Fuses Overview

The RHEF1500-2 is a polymeric PTC resettable fuse from the Littelfuse RHEF series, designed for overcurrent protection in electronic circuits. It features a radial leaded package suitable for PCB mounting. Key electrical parameters include a hold current of 15 A and a trip current of 28 A at ambient conditions. The device supports a maximum voltage of 16 VDC and has a maximum fault current rating of 100 A. Its initial resistance is typically 3.2 mΩ, with a maximum resistance of 6.13 mΩ. The component operates within a temperature range of -40°C to +125°C and utilizes a 10.9 mm lead spacing.

Ptc Resettable Fuses Feature Summary

• Polymeric PTC technology providing automatic reset capability after fault clearance
• Radial leaded construction optimized for through-hole PCB integration
• High thermal stability supporting operation up to 125°C
• Flat thermal derating characteristics for predictable performance

Ptc Resettable Fuses Applications

• Overcurrent protection for portable electronics
• Circuit safeguarding in automotive applications
• Protection for battery packs and power supplies
• Industrial control system circuitry

Ptc Resettable Fuses Procurement Notes

Verify the specific ordering suffix '-2' to confirm radial lead configuration and packaging type. Ensure the selected variant matches the required hold current and voltage ratings for the target application. Cross-reference the manufacturer datasheet for updated mechanical dimensions and compliance certifications before finalizing procurement specifications.

Ptc Resettable Fuses Selection Notes

Select this component based on the 15 A hold current requirement and 16 VDC maximum voltage constraint. Consider the 100 A fault current rating for short-circuit scenarios. Evaluate the thermal environment to ensure operation remains within the -40°C to +125°C range. Confirm that the radial lead spacing aligns with the PCB footprint design.

Ptc Resettable Fuses Part Context

The RHEF1500-2 belongs to the RHEF series of resettable fuses, which are characterized by flatter thermal derating curves compared to other series. This series is engineered for high-volume electronics manufacturing and offers a balance of voltage ratings and operating temperatures. It serves as a reusable alternative to traditional single-use fuses in modern circuit designs.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes within the same family include variants with different hold currents or voltage ratings. Verify compatibility by comparing trip current thresholds and physical dimensions. Consult official substitution guides for cross-referencing equivalent components with similar electrical profiles.

Ptc Resettable Fuses FAQ

What is the typical resistance value of the RHEF1500-2?

The typical minimum resistance (RMIN) is 3.2 mΩ, with a maximum resistance specified at 6.13 mΩ.

Does the RHEF1500-2 support surface mount installation?

No, the RHEF1500-2 is a radial leaded device intended for through-hole PCB mounting.