SMD1210P005TFA

Ptc Resettable Fuses Overview

The SMD1210P005TFA is a surface-mount polymeric positive temperature coefficient (PPTC) resettable fuse from Littelfuse. It belongs to the POLY-FUSE PolySwitch family and utilizes a 1210 (3225 metric) package for PCB mounting. The device features a hold current of 50 mA and a trip current of 100 mA, designed to withstand a maximum voltage of 30 V. It offers a maximum fault current rating of 10 A and maintains an initial resistance of 0.8 Ohms. Operating temperatures range from -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit protection through reversible thermal switching action upon overcurrent events
• Enables compact board-level integration via standard surface-mount technology footprint
• Delivers reliable performance across specified industrial temperature ranges

Ptc Resettable Fuses Applications

• Portable electronic devices requiring overcurrent safeguarding
• Battery pack protection circuits
• Consumer electronics power input lines

Ptc Resettable Fuses Procurement Notes

This component is officially classified as obsolete by the manufacturer and is no longer in production. Distributors may list remaining stock or recommend alternatives. Verify end-of-life status directly with authorized channels before design finalization to ensure supply chain continuity.

Ptc Resettable Fuses Selection Notes

Designers must evaluate the specific hold and trip current requirements against the 50 mA and 100 mA specifications respectively. The 30 V maximum voltage rating limits suitability for higher voltage applications. Thermal derating curves should be consulted for ambient temperature adjustments.

Ptc Resettable Fuses Part Context

This part belongs to the SMD-P series of POLY-FUSE resettable fuses. These components are engineered for circuit protection in space-constrained environments. The series provides a cost-effective alternative to traditional fuses by eliminating replacement needs after tripping.

Ptc Resettable Fuses Replacement Considerations

Public sources identify MICROSMD010F-2 as a similar available substitute. Verify electrical parameters and physical dimensions against the original specification sheet before implementation.