250R080DR

Ptc Resettable Fuses Overview

The Littelfuse Inc. 250R080DR is a PolySwitch radial leaded PPTC resettable fuse from the 250R series, designed for overcurrent protection in circuits and wiring harnesses. It features a maximum voltage rating of 60V (250V Int) and a hold current (Ih) of 80 mA. The device trips at 160 mA with a maximum trip time of 4 seconds. Initial resistance is 14 Ohms minimum, rising to 33 Ohms maximum after tripping. Rated for 3 A maximum fault current, it operates between -40°C and 85°C. Dimensions are 5.80mm diameter by 4.60mm height.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit reset capability following overcurrent events without manual replacement
• Offers reliable overcurrent protection for PCB components and wiring harnesses
• Features low initial resistance for minimal power loss during normal operation

Ptc Resettable Fuses Applications

• Protection of portable electronic devices
• Overcurrent safeguarding for peripheral equipment interfaces
• Circuit protection in telecommunications hardware

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix 'DR' against official Littelfuse documentation to confirm tape-and-reel packaging requirements versus bulk availability. Ensure the selected variant matches the required axial lead spacing and termination style for the target PCB layout. Confirm RoHS compliance status and agency approvals relevant to the end application's regulatory environment before finalizing procurement.

Ptc Resettable Fuses Selection Notes

Select this component when a resettable solution is preferred over single-use fuses for 80 mA circuits. Ensure the operating voltage does not exceed 60V DC or 250V AC internal ratings. Verify that the expected fault current remains within the 3 A maximum limit to prevent device damage. Consider the thermal environment, as performance varies with ambient temperature up to 85°C.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse 250R series of PolySwitch radial leaded PPTC devices. These components are engineered for compact surface-mount or through-hole integration where space is limited. The series provides a broad range of hold currents and voltage ratings for diverse consumer and industrial electronics applications requiring robust overcurrent management.

Ptc Resettable Fuses Replacement Considerations

Consult official Littelfuse substitution guides for verified equivalents. Generic replacements may differ in trip characteristics or physical dimensions. Ensure any substitute maintains the same voltage rating, hold current, and package form factor to guarantee circuit compatibility.