TRF250-183S-0.110

Ptc Resettable Fuses Overview

The Littelfuse TRF250-183S-0.110 is a polymeric PTC resettable fuse from the PolySwitch TRF250 series, designed for through-hole radial mounting with a 5.08 mm lead spacing. It features a maximum voltage rating of 100 VDC (250 V internal) and a hold current of 183 mA. The device trips at 685 mA with a typical trip time of 1.8 seconds. Initial resistance is minimum 800 mOhms, while post-trip resistance reaches up to 3.4 Ohms. It supports a maximum fault current of 10 A and dissipates 900 mW power. Operating temperatures range from -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

• Self-resetting protection via polymer positive temperature coefficient mechanism
• Radial disc package optimized for standard through-hole PCB assembly
• Certified by UL, CSA, and TUV agencies for global compliance

Ptc Resettable Fuses Applications

• Indoor LED lighting circuit protection
• Building and home automation systems
• Consumer electronics power input stages

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix '0.110' against the manufacturer's official ordering guide to confirm lead spacing and packaging configuration. Ensure the selected variant matches the required 100V DC rating and 183 mA hold current specifications for the target application. Cross-reference the datasheet revision date to confirm material compliance and RoHS status before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component when a self-resetting overcurrent protection solution is required for low-power circuits operating below 100 VDC. The 183 mA hold current and 685 mA trip threshold provide precise protection margins. Consider the 3.4 Ohm maximum post-trip resistance to ensure it does not exceed voltage drop limits in sensitive signal or power lines during fault conditions.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse PolySwitch TRF250 series of resettable fuses. It serves as a reusable alternative to traditional one-time fusible links, offering repeated protection cycles after fault clearance. The radial disc form factor allows for compact integration into various electronic assemblies without requiring surface-mount footprint constraints.

Ptc Resettable Fuses Replacement Considerations

TRF250-183U and TRF250-183S-2 are documented variants within the same family. Verify that substitute parts maintain identical hold current, voltage ratings, and physical dimensions to ensure mechanical and electrical compatibility.