RKEF160

Ptc Resettable Fuses Overview

The Littelfuse RKEF160 is a radial-leaded PolySwitch resettable PPTC device designed for overcurrent protection. It features a maximum voltage rating of 60 VDC and a trip current of 3.2 A. The device maintains a hold current of 1.6 A and supports a maximum fault current of 40 A. Its initial resistance is 200 mΩ, with a power rating of 2.40 W. The component operates within a temperature range of -40°C to +85°C and utilizes a PCB mount installation style.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection by raising resistance as it heats to limit current flow during fault conditions.
• Functions as a solid-state fuse that automatically resets once the fault condition is removed and the device cools down.
• Offers compact radial-leaded form factor suitable for direct PCB mounting in space-constrained designs.

Ptc Resettable Fuses Applications

• Protection of automotive actuators, screens, and small motors
• Overcurrent safeguarding for telephony and networking equipment
• Circuit protection for battery packs and rechargeable batteries

Ptc Resettable Fuses Procurement Notes

Verify the specific Littelfuse datasheet revision to confirm mechanical dimensions and lead compatibility before integration. Ensure the application environment remains within the specified -40°C to +85°C operating range to guarantee proper thermal performance. Confirm that the 60 VDC maximum voltage rating aligns with the circuit's peak operating conditions to prevent dielectric breakdown during transient events.

Ptc Resettable Fuses Selection Notes

Select this component when a resettable solution is required for low-voltage DC circuits up to 60 V. The 1.6 A hold current must exceed the normal operating current of the protected load to prevent nuisance tripping. Designers should account for the 200 mΩ initial resistance impact on circuit efficiency and ensure adequate board spacing for the radial leads to accommodate the 40 A fault current capability safely.

Ptc Resettable Fuses Part Context

The RKEF160 belongs to the RKEF series of PolySwitch resettable fuses manufactured by Littelfuse. This series is engineered specifically for providing robust overcurrent protection in demanding environments. As part of the broader PolySwitch portfolio, these devices serve as critical safety components in various electronic systems requiring reliable, non-latching circuit interruption capabilities.

Ptc Resettable Fuses Replacement Considerations

Consult official Littelfuse cross-reference documentation for verified equivalent part numbers. Do not substitute based solely on similar electrical ratings without confirming package compatibility and thermal characteristics.