PFSM.125.2

Ptc Resettable Fuses Overview

The PFSM.125.2 is a surface-mount PTC resettable fuse from the Schurter PFSM series, designed for overcurrent protection in electronic circuits. It features a hold current of 1.25A and a trip current of 2.5A, with a maximum voltage rating of 15V and a maximum fault current capacity of 40A. The device exhibits a low initial resistance of 0.06 Ohms and operates within a temperature range of -40°C to +85°C. Its compact SMD package facilitates automated assembly.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit recovery after fault clearance without manual replacement
• Offers high fault current tolerance up to 40A for robust protection
• Features low on-state resistance to minimize power loss during normal operation

Ptc Resettable Fuses Applications

• Portable consumer electronics battery protection
• USB port overcurrent protection
• Low-voltage DC circuit safeguarding

Ptc Resettable Fuses Procurement Notes

Verify component authenticity through authorized Schurter distributors or certified agents. Confirm RoHS compliance status and specific tape-and-reel packaging specifications required for your SMT production line prior to ordering. Ensure storage conditions adhere to manufacturer guidelines to maintain solderability and performance integrity.

Ptc Resettable Fuses Selection Notes

Select this component when designing low-voltage systems requiring rapid response to overcurrent events. The 15V rating suits USB and similar interfaces. Evaluate thermal derating curves for ambient temperatures exceeding standard limits. Ensure PCB copper area supports the specified power dissipation requirements for reliable long-term operation.

Ptc Resettable Fuses Part Context

This part belongs to the PFSM series of surface-mount PTC fuses, engineered for space-constrained applications. It serves as a reusable alternative to traditional one-time fuses, reducing maintenance costs in inaccessible or hard-to-reach electronic assemblies while maintaining safety standards.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include other Schurter PFSM variants with matching electrical ratings. Cross-reference parameters such as hold current, voltage rating, and physical dimensions to ensure compatibility with existing PCB footprints and circuit design requirements.