SMD1206P012TFA

Ptc Resettable Fuses Overview

The Littelfuse SMD1206P012TFA is a POLYFUSE resettable PPTC device in the SMD-P series. It features a 12 V maximum voltage rating and a 1.2 A hold current. The trip current is 2.4 A, with a maximum resistance of 0.05 Ohms. It supports a fault current rating of 100 A and operates between -40°C and +85°C. The component utilizes a 1206 surface-mount package.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection for circuits by raising resistance as it heats to limit current flow
• Designed for surface-mount PCB integration to protect components and ICs from overcurrent events

Ptc Resettable Fuses Applications

• Protection for battery packs and rechargeable batteries
• Overcurrent safeguarding for portable consumer electronics
• Circuit protection in telecommunications equipment

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix TFA against official Littelfuse documentation to confirm tape and reel packaging specifications. Confirm RoHS compliance status through the manufacturer datasheet. Ensure the part number matches the exact electrical ratings required for the target circuit design before procurement.

Ptc Resettable Fuses Selection Notes

Select this component based on the 12 V voltage rating and 1.2 A hold current requirements. Evaluate the 0.05 Ohm resistance for power loss considerations. Ensure the 100 A fault current rating exceeds potential short-circuit levels in the application environment.

Ptc Resettable Fuses Part Context

This device belongs to the POLYFUSE PolySwitch resettable fuse family manufactured by Littelfuse. These solid-state PPTC fuses offer reusable overcurrent protection alternatives to traditional one-time fuses. The SMD-P series specifically targets surface-mount applications requiring compact protection solutions.

Ptc Resettable Fuses Replacement Considerations

Consult official Littelfuse substitution guides for verified equivalents. Cross-reference hold current, voltage rating, and package dimensions when identifying compatible replacement parts.