TR250-120

Ptc Resettable Fuses Overview

The Littelfuse TR250-120 is a PolySwitch resettable PPTC fuse designed for circuit protection. It features a holding current of 120 mA and a trip current of 240 mA, with a maximum voltage rating of 60 VDC. The device has a maximum rated current of 3 A and an initial resistance of 16 Ohms. It operates within a temperature range of -40°C to +85°C and utilizes radial through-hole mounting with a 5 mm lead spacing.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit interruption in response to overcurrent conditions
• Restores conductivity after fault clearance without manual replacement
• Offers dual certification from UL and CSA agencies

Ptc Resettable Fuses Applications

• Portable electronic devices
• Laptop computers
• Peripheral equipment

Ptc Resettable Fuses Procurement Notes

Verify the exact part number against official Littelfuse documentation, as the requested model may be a variant or typo for the TRF250 series. Confirm that the specific suffix matches the required packaging and termination style. Ensure compliance with RoHS directives and check for any recent product change notices affecting material composition or manufacturing origin before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component based on the 120 mA holding current requirement for low-power signal lines. The 60 VDC rating suits low-voltage digital circuits. Verify that the 16 Ohm resistance does not impact signal integrity. Ensure the PCB layout accommodates the radial package dimensions and 5 mm lead spacing for proper mechanical stability during soldering.

Ptc Resettable Fuses Part Context

This component belongs to the TRF250 family of PolySwitch resettable fuses. This series is engineered for compact applications requiring reliable overcurrent protection. The design focuses on minimizing footprint while maintaining robust performance standards for consumer electronics and industrial control systems.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include other Littelfuse TRF250 variants with matching electrical ratings. Cross-reference specifications carefully to ensure identical holding and trip currents. Verify that alternative packages maintain compatible thermal and mechanical properties.