0402L035SLKR

Overview

The Littelfuse 0402L035SLKR is a PolySwitch resettable PTC device from the Low Rho series, designed for surface mount applications. It features a hold current of 350 mA and a trip current of 700 mA, with a maximum voltage rating of 6 VDC. The component exhibits a typical resistance of 700 mOhms and supports a maximum fault current of 40 A. Packaged in a compact 0402 (1005 metric) footprint measuring 1.15 mm by 0.6 mm with a height of 0.65 mm, it operates within a temperature range of -40°C to +85°C and dissipates up to 500 mW.

Feature Summary

• Provides automatic circuit protection through self-resetting polymeric positive temperature coefficient technology
• Offers low initial resistance characteristics to minimize power loss in sensitive signal lines
• Enables reliable operation in harsh environments with extended thermal stability ranges

Applications

• Protection of portable electronic devices and mobile communication hardware
• Overcurrent safeguarding for USB ports and data interface circuits
• Circuit protection in automotive infotainment and sensor modules

Procurement Notes

Verify that the specific suffix SLKR matches the required reel packaging configuration for automated assembly processes. Confirm RoHS compliance status against current regulatory requirements before finalizing procurement orders. Ensure the selected variant aligns with the designated voltage and current ratings for the target application circuit design.

Selection Notes

Select this component when space constraints require a 0402 footprint with a 6 VDC maximum rating. Choose based on the 350 mA hold current requirement for continuous operation. Consider the 700 mOhms resistance value for minimal impact on signal integrity. Evaluate the 40 A interrupt rating for adequate fault handling capability in the specific circuit topology.

Part Context

This part belongs to the Littelfuse Low Rho family of resettable fuses, engineered for high-density surface mount integration. The series utilizes specialized polymer materials to achieve lower resistance values compared to standard PolySwitch devices. This family targets modern electronics requiring compact overcurrent protection solutions without sacrificing performance or reliability standards.

Replacement Considerations

Consult official Littelfuse documentation for verified substitute part numbers within the same Low Rho series. Cross-reference electrical parameters such as hold current and voltage ratings to ensure functional equivalence. Do not assume compatibility with generic PTC components without validating specific datasheet specifications.