LR4-260SF

Ptc Resettable Fuses Overview

The Littelfuse LR4-260SF is a PolySwitch resettable PTC device designed for strap mount installation. It features a maximum voltage rating of 15 VDC and a hold current of 2.6 A. The trip current is specified at 5.8 A, with a maximum fault current rating of 100 A. The device has a typical resistance of 42 mΩ and operates within a temperature range of -40°C to +85°C. It dissipates up to 1 W of power and is supplied in bulk packaging.

Ptc Resettable Fuses Feature Summary

• Provides overcurrent protection by increasing resistance when heated during fault conditions
• Designed as a strap-mounted device for battery and high-current circuit applications
• Offers reliable resettable functionality after the fault condition is cleared

Ptc Resettable Fuses Applications

• Rechargeable battery pack protection against overcurrent and short circuits
• Automotive interior lighting systems requiring ESD and surge protection
• Power supply input stages for overcurrent limiting

Ptc Resettable Fuses Procurement Notes

Verify that the specific suffix SF corresponds to the required strap-mount configuration and lead style. Confirm that the 15 VDC rating and 2.6 A hold current align with the target circuit's operational parameters. Ensure compatibility with the intended PCB or chassis mounting method before finalizing procurement.

Ptc Resettable Fuses Selection Notes

Select this component when a low-resistance, strap-style resettable fuse is required for battery protection. The 2.6 A hold current suits moderate load applications. Consider the 100 A max fault current capability for short-circuit scenarios. Verify thermal management requirements given the 1 W power dissipation rating in enclosed spaces.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse PolySwitch family of resettable PTC devices. These solid-state fuses provide reusable overcurrent protection, eliminating the need for replacement after tripping. The strap form factor distinguishes it from surface-mount or radial-leaded variants, offering robust connections for higher current paths.

Ptc Resettable Fuses Replacement Considerations

The part number alias LR4-260F indicates potential cross-reference availability. Verify electrical equivalence, specifically the 2.6 A hold current and 15 VDC rating, before substituting. Ensure the physical strap-mount dimensions and terminal configuration match the existing design constraints.