PSR-28025

Ptc Resettable Fuses Overview

The Littelfuse PSR-28025 is a polymeric positive temperature coefficient (PPTC) resettable fuse designed for circuit protection. It features a nominal hold current of 280 mA and operates within a standard voltage range typical for surface-mount devices. The component utilizes a chip-style form factor suitable for automated assembly processes, providing reliable overcurrent protection through its inherent thermal response characteristics without requiring replacement after tripping events.

Ptc Resettable Fuses Feature Summary

• Polymeric positive temperature coefficient construction enables automatic reset functionality after fault clearance
• Chip-style surface mount design facilitates integration into compact electronic assemblies
• Thermal actuation mechanism provides consistent overcurrent protection response

Ptc Resettable Fuses Applications

• Portable electronics battery pack protection
• Consumer device input circuit safeguarding
• Industrial control board overcurrent defense

Ptc Resettable Fuses Procurement Notes

Verify the specific datasheet version to confirm exact voltage ratings and trip thresholds, as PPTC specifications vary significantly by series. Ensure the selected variant matches the required hold current tolerance and maximum voltage for the target application environment. Cross-reference package dimensions with PCB footprint requirements before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component based on the precise 280 mA hold current requirement and the need for resettable protection in space-constrained designs. Evaluate the thermal environment to ensure the ambient temperature does not prematurely trigger the device. Confirm that the surface mount package aligns with existing manufacturing capabilities and reflow soldering profiles.

Ptc Resettable Fuses Part Context

This part belongs to the PSR series of resettable fuses, which are widely utilized in modern electronics for protecting sensitive circuits from overcurrent conditions. Unlike traditional fuses, these devices offer a cost-effective solution for applications where manual replacement is impractical or undesirable, supporting high-volume production environments.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes must match the 280 mA hold current and compatible voltage rating. Verify that alternative PPTC devices maintain similar trip time characteristics and physical dimensions to ensure seamless PCB integration without redesign.