SMD1812P010TFA

Ptc Resettable Fuses Overview

The Littelfuse SMD1812P010TFA is a PolySwitch resettable PPTC device designed for surface mount applications. It features a hold current of 100 mA and a trip current of 500 mA, with a maximum voltage rating of 30 V. The component exhibits a typical resistance of 4 Ohms and can withstand a maximum fault current of 100 A. Operating within a temperature range of -40°C to +85°C, it utilizes an 1812 (4532 metric) package measuring 4.73 mm in length and 3.41 mm in width.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection by raising internal resistance as heat increases during fault conditions
• Offers automatic circuit restoration after the fault condition is removed without requiring manual replacement
• Designed for surface mount integration into printed circuit boards for compact electronic assemblies

Ptc Resettable Fuses Applications

• Automotive electronics circuits
• Telecommunications equipment protection
• Power supply input stages

Ptc Resettable Fuses Procurement Notes

Verify the specific datasheet revision and manufacturer documentation before implementation. Confirm that the 1812 package dimensions align with the target PCB footprint. Ensure the thermal environment remains within the specified operating temperature range. Check for any RoHS compliance details required for the final assembly. Validate that the hold and trip currents meet the circuit design requirements.

Ptc Resettable Fuses Selection Notes

Select this component when a surface mount resettable fuse is required for low-current protection. The 100 mA hold current suits sensitive signal lines or low-power modules. The 30 V rating limits its use to low-voltage DC systems. Consider the 4 Ohm resistance impact on normal operation voltage drops. Evaluate the 1812 form factor against available board space constraints.

Ptc Resettable Fuses Part Context

This part belongs to the SMD-P series of PolySwitch resettable fuses from Littelfuse. These devices are solid-state polymer components used for circuit protection. They serve as alternatives to traditional one-time fuses in modern electronics. The series provides various current ratings and package sizes for diverse application needs.

Ptc Resettable Fuses Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.