SMD1206P050TFA

Ptc Resettable Fuses Overview

The Littelfuse SMD1206P050TFA is a surface-mount PolySwitch resettable PPTC fuse in a 1206 package. It features a hold current of 500 mA and a trip current of 1 A. The device has a maximum voltage rating of 6 V and a maximum fault current rating of 40 A. Its initial resistance is typically 0.3 Ohms, with a maximum resistance of 0.6 Ohms. The component operates within a temperature range of -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection for circuits by raising resistance as it heats.
• Offers automatic reset functionality after the fault condition is removed.
• Designed for surface mount applications to optimize board space.

Ptc Resettable Fuses Applications

• Protection of actuators and small motors in automotive systems
• Overcurrent protection for telecom equipment and wiring harnesses
• Circuit protection for power supply applications

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix TFA against official Littelfuse documentation to confirm tape and reel packaging details. Ensure the selected variant matches the required hold and trip currents for the target circuit design. Cross-reference the datasheet for any updates on material compliance or manufacturing changes.

Ptc Resettable Fuses Selection Notes

Select this component when low-voltage circuit protection is required in compact surface-mount designs. The 6 V rating suits low-power digital logic and battery-powered devices. Evaluate the thermal environment to ensure the device trips appropriately without nuisance tripping during normal operation.

Ptc Resettable Fuses Part Context

This part belongs to the POLY-FUSE family of resettable fuses from Littelfuse. These solid-state devices serve as alternatives to traditional one-time fuses, offering repeated use after fault clearance. The series is widely used in consumer electronics and industrial control panels for robust circuit safeguarding.

Ptc Resettable Fuses Replacement Considerations

Check for direct substitutes within the same SMD-P series with matching 1206 footprint and electrical ratings. Verify that alternative parts meet the same voltage and current specifications to maintain circuit integrity.