SMD2920P125TFA

Ptc Resettable Fuses Overview

The SMD2920P125TFA is a surface-mount polymeric PTC resettable fuse from the Littelfuse 2920L series. It features a hold current of 1.25 A and a trip current of 2.5 A, rated for a maximum voltage of 15 VDC. The device exhibits a typical resistance of 85 mOhms and can withstand a maximum fault current of 40 A. Physical dimensions are 7.35 mm in length, 5.1 mm in width, and 1.25 mm in height. It operates within a temperature range of -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

• Polymeric positive temperature coefficient construction for automatic circuit protection
• Surface mount design compatible with standard SMD/SMT assembly processes
• Self-resetting functionality eliminates the need for manual replacement after fault clearance

Ptc Resettable Fuses Applications

• Portable electronic devices requiring overcurrent protection
• Consumer electronics circuits
• Battery pack protection systems

Ptc Resettable Fuses Procurement Notes

Verify component status as this part number is listed as obsolete by major distributors. Confirm availability through authorized channels or check for direct substitutes like the 2920L125PR. Ensure compliance with RoHS standards and moisture sensitivity levels during handling and storage procedures.

Ptc Resettable Fuses Selection Notes

Select based on the 1.25 A hold current and 15 VDC rating requirements. Consider the 2920 package size for space-constrained PCB layouts. Evaluate thermal derating curves for high-temperature environments exceeding standard operating ranges.

Ptc Resettable Fuses Part Context

This component belongs to the Littelfuse POLY-FUSE 2920L series of resettable fuses. These devices utilize polymer technology to provide reliable overcurrent protection in compact surface-mount formats suitable for modern electronic assemblies.

Ptc Resettable Fuses Replacement Considerations

The 2920L125PR is identified as a direct substitute available from Littelfuse Inc.