SMD1812P075TFA

Ptc Resettable Fuses Overview

The Littelfuse SMD1812P075TFA is a surface-mount PolySwitch resettable fuse from the SMD-P series. It features a 13.2 V maximum voltage rating and a 750 mA hold current. The device trips at 1.5 A with a maximum resistance of 450 mOhms. It supports a fault current rating of 40 A and operates within a temperature range of -40°C to +85°C. The component utilizes an 1812 package (4.73 mm x 3.41 mm) for PCB mounting.

Ptc Resettable Fuses Feature Summary

• Provides automatic overcurrent protection by increasing resistance during thermal events
• Offers reusable circuit safeguarding without requiring manual replacement
• Designed for direct surface-mount soldering onto printed circuit boards

Ptc Resettable Fuses Applications

• Portable electronic device power line protection
• Peripheral interface circuit safeguarding
• Battery pack overcurrent limiting

Ptc Resettable Fuses Procurement Notes

Verify component authenticity through authorized Littelfuse channels due to discontinued status. Confirm RoHS compliance documentation matches specific manufacturing lot requirements. Validate that the 1812 footprint dimensions align precisely with existing PCB land patterns before finalizing procurement decisions.

Ptc Resettable Fuses Selection Notes

Select this component when a 750 mA hold current and 13.2 V rating suit the circuit design. Ensure the 450 mOhms maximum resistance meets voltage drop constraints. Verify that the 40 A fault current capability exceeds potential short-circuit levels in the target application environment.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse SMD-P series of surface-mount PPTC devices. These components are engineered for compact electronics requiring reliable, space-saving overcurrent protection solutions. The series provides consistent performance across various low-voltage applications.

Ptc Resettable Fuses Replacement Considerations

Public records indicate the 1812L075PR as a comparable alternative within the same manufacturer lineup. Verify electrical parameters and package compatibility before substitution.