250S130DR

Ptc Resettable Fuses Overview

The Littelfuse Inc. 250S130DR is a PolySwitch resettable polymer positive temperature coefficient (PPTC) device designed for surface mount applications. It belongs to the 250S series and provides overcurrent protection by increasing resistance when heated during fault conditions. The component features a maximum operating voltage of 60V and a hold current (Ih) of 130mA. Key electrical parameters include a trip current (It) of 260mA, an initial resistance (Ri) minimum of 6.5 Ohms, and a maximum post-trip resistance (R1) of 20 Ohms. It supports a maximum fault current rating of 1A and dissipates up to 0.4W of power. The device operates within a temperature range of -40°C to 85°C and utilizes a compact 0603 (1608 metric) package footprint.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection through automatic resistance increase upon heating
• Offers resettable functionality eliminating the need for manual fuse replacement after fault clearance
• Designed for surface mount integration to optimize printed circuit board space

Ptc Resettable Fuses Applications

• Protection of portable electronic devices and battery packs from overcurrent events
• Overcurrent safeguarding in telecommunications and data line circuits
• Circuit protection for consumer electronics and peripheral interfaces

Ptc Resettable Fuses Procurement Notes

Verify that the specific suffix DR corresponds to the tape and reel packaging configuration required for automated assembly processes. Confirm that the 0603 package dimensions align with the designated footprint on the target printed circuit board. Ensure that the thermal environment of the application remains within the specified -40°C to 85°C operating range to maintain consistent performance characteristics and prevent premature degradation of the polymer material.

Ptc Resettable Fuses Selection Notes

Select this component when a compact surface mount solution is required for low-current circuit protection. The 130mA hold current makes it suitable for sensitive signal lines or low-power auxiliary circuits. Engineers should evaluate the maximum fault current capability of 1A against potential short-circuit scenarios. Consider the initial resistance value to ensure minimal voltage drop impact during normal operation while providing adequate protection thresholds.

Ptc Resettable Fuses Part Context

This part belongs to the PolySwitch 250S series, which focuses on small-form-factor resettable fuses. The series is engineered for applications where space constraints are critical. Unlike traditional fusible links, these devices offer repeated protection cycles. The 250S series specifically targets high-density PCB layouts common in modern mobile and computing hardware, providing robust protection without significant board area consumption.

Ptc Resettable Fuses Replacement Considerations

No public confirmed substitute part numbers are available.