TRF250-120T-RC-B-0.5-2

Ptc Resettable Fuses Overview

The Littelfuse TRF250-120T-RC-B-0.5-2 is a PolySwitch resettable fuse from the TRF250 series, designed for overcurrent protection in electronic circuits. It features a radial disc package with a hold current of 120 mA and a trip current of 240 mA. The device supports a maximum voltage of 60 VDC and a maximum rated current of 3 A. It exhibits a typical resistance of 7.5 Ohms at room temperature. The component operates within a temperature range of -40°C to +85°C and is RoHS compliant.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit recovery after fault clearance without manual replacement
• Utilizes polymeric PTC technology for reliable overcurrent protection
• Features a radial disc package suitable for through-hole PCB mounting

Ptc Resettable Fuses Applications

• Overcurrent protection for portable electronics
• Protection of peripheral interfaces such as USB and HDMI ports
• Circuit safeguarding in telecommunications equipment

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix configuration against official Littelfuse documentation to ensure compatibility with design requirements. Confirm that the radial disc package dimensions align with the target PCB footprint. Check for RoHS compliance status if restricted substance regulations apply to the final assembly. Ensure the maximum operating voltage and current ratings meet the circuit's worst-case conditions.

Ptc Resettable Fuses Selection Notes

Select this component when a resettable fuse with a 120 mA hold current is required for low-voltage applications up to 60 VDC. Consider the 7.5 Ohm resistance value for impact on circuit power consumption. Evaluate the thermal environment to ensure operation remains within the specified -40°C to +85°C range. Compare with similar TRF250 variants if different current or voltage ratings are needed.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse TRF250 series of PolySwitch resettable fuses. These devices are engineered for high-reliability protection in space-constrained applications. The series offers various hold currents and voltage ratings to suit diverse electronic designs. The TRF250-120T variant specifically targets applications requiring precise current limiting with rapid response characteristics.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include TRF250-120T-R1-B-0.5 and TRF250-120T-RC-B-0.5, which share identical electrical specifications. Verify package compatibility and lead form differences before substitution. Ensure any alternative maintains the same 60 VDC rating and 120 mA hold current.