TRF250-080U-2

Ptc Resettable Fuses Overview

The Littelfuse TRF250-080U-2 is a PolySwitch resettable polymer PTC device designed for overcurrent protection in electronic circuits. It features a maximum voltage rating of 60 VDC and a hold current of 80 mA, with a trip current of 160 mA. The component supports a maximum fault current of 3 A and exhibits an initial resistance minimum of 14 Ohms and a post-trip resistance maximum of 33 Ohms. It operates within a temperature range of -40°C to +85°C and utilizes a radial through-hole package with a 5 mm lead spacing.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit interruption by increasing resistance during overcurrent events
• Restores normal conductivity automatically after the fault condition is removed and the device cools
• Offers reliable protection against short circuits and excessive current loads

Ptc Resettable Fuses Applications

• Protection of battery-powered portable electronics
• Overcurrent safeguarding in telecommunications equipment
• Circuit protection for automotive accessory wiring harnesses
• Defense of consumer appliance control boards

Ptc Resettable Fuses Procurement Notes

Verify that the specific part number matches the required electrical ratings, particularly the 80 mA hold current and 60 VDC maximum voltage. Confirm the package style is radial leaded and ensure compliance with RoHS directives if required by the manufacturing process. Cross-reference the manufacturer's datasheet for precise thermal derating curves and time-to-trip characteristics before finalizing the bill of materials.

Ptc Resettable Fuses Selection Notes

Select this component when the protected circuit requires a low holding current near 80 mA and operates at voltages up to 60 VDC. Ensure the expected operating current remains below the hold current threshold to prevent nuisance tripping. Verify that the available space accommodates the radial footprint and that the ambient temperature stays within the specified operational range for consistent performance.

Ptc Resettable Fuses Part Context

This device belongs to the TRF250 series of PolySwitch resettable fuses from Littelfuse. The series provides a range of radial leaded options tailored for various current and voltage requirements. These components are engineered to replace traditional one-time fuses in applications where serviceability and automatic recovery are critical design factors.

Ptc Resettable Fuses Replacement Considerations

The Bel Fuse 0ZRF0008FF1E is documented as a similar substitute part number. Verify that the alternative component meets or exceeds the original voltage, current, and resistance specifications before implementation.