250R180MR

Ptc Resettable Fuses Overview

The Littelfuse 250R180MR is a PolySwitch radial leaded PPTC resettable fuse designed for overcurrent protection. It belongs to the 250R series and features a hold current of 180 mA with a trip current of 650 mA. The device supports a maximum voltage rating of 60 V and has a maximum fault current rating of 10 A. Its initial resistance is typically 4 Ohms, with a power dissipation of 1.8 W. Operating temperatures range from -40°C to +85°C, and it utilizes a radial lead termination style.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit reset capability after fault conditions clear
• Offers reliable overcurrent protection for PCB components and wiring harnesses
• Features compact radial leaded form factor for easy board mounting

Ptc Resettable Fuses Applications

• Telecom equipment protection
• Automotive circuit safeguarding
• Portable electronic device overcurrent prevention

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix 'MR' against official Littelfuse documentation to confirm packaging type or material compliance variations compared to standard bulk versions. Ensure the component matches the required voltage and current ratings for the target application circuit design before procurement.

Ptc Resettable Fuses Selection Notes

Select this component when a radial leaded PPTC fuse is required for low-voltage circuits. The 180 mA hold current suits sensitive signal lines or low-power control circuits. Verify that the 60 V maximum voltage rating aligns with the system's operating voltage to ensure proper functionality and safety margins.

Ptc Resettable Fuses Part Context

This part is part of the Littelfuse PolySwitch 250R series, which offers a wide range of hold currents and voltage ratings. The 250R series is commonly used in automotive and telecom applications where space-saving radial leads are preferred over surface mount options for robust mechanical attachment.

Ptc Resettable Fuses Replacement Considerations

Check for equivalent parts within the same 250R series with matching hold and trip currents. Verify that any substitute maintains the same radial lead spacing and voltage rating to ensure physical and electrical compatibility.