2920L125PR-A

Ptc Resettable Fuses Overview

The Littelfuse 2920L125PR-A is a PolySwitch resettable PTC device designed for surface mount applications. It features a maximum voltage rating of 15V and a hold current (Ih) of 1.25A. The trip current (It) is specified at 2.5A, with a maximum fault current rating of 40A. Initial resistance (Ri) is typically 70 mOhms, while post-trip resistance (R1) has a maximum value of 140 mOhms. The component operates within a temperature range of -40°C to +85°C and utilizes a 2920 (7351 metric) package.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit protection through polymer positive temperature coefficient technology
• Enables rapid self-resetting after fault conditions are cleared without manual intervention
• Supports high-volume manufacturing via standard surface mount packaging formats

Ptc Resettable Fuses Applications

• Portable electronic devices requiring overcurrent protection
• Battery packs and power management circuits
• Peripheral interfaces such as USB and HDMI ports

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix 'A' against the manufacturer's official documentation to confirm any distinct material or processing variations compared to the standard 2920L125PR variant. Ensure that the ordering information matches the exact datasheet revision required for the design. Cross-reference the component marking codes with the latest product identification guides to prevent assembly errors during production.

Ptc Resettable Fuses Selection Notes

Select this component when a 1.25A hold current and 15VDC rating align with the circuit requirements. Evaluate the initial resistance of 70 mOhms for potential voltage drop impacts in low-voltage lines. Confirm that the 2920 footprint dimensions fit the PCB layout constraints. Consider the thermal environment to ensure the device remains within its operational temperature limits during normal operation.

Ptc Resettable Fuses Part Context

This part belongs to the POLY-FUSE 2920L series, which offers compact surface mount solutions for consumer electronics. The series provides various current ratings within a standardized package size to simplify supply chain management. The 2920L125PR-A represents a specific current rating option within this family, maintaining consistent mechanical and electrical characteristics relative to other members of the series.

Ptc Resettable Fuses Replacement Considerations

The 2920L125PR serves as a direct functional substitute within the same series. Verify that the base model meets all electrical specifications if the 'A' suffix denotes a non-functional difference. Consult the manufacturer's substitution guide for any changes in certification status or recommended reflow profiles.