1206L075WR

Ptc Resettable Fuses Overview

The Littelfuse Inc. 1206L075WR is a surface-mount PolySwitch resettable PTC fuse designed for overcurrent protection in electronic circuits. It belongs to the POLY-FUSE 1206L series and utilizes polymer technology to increase resistance upon heating, thereby limiting current flow during fault conditions. The component features a leadless 1206 (3216 metric) package suitable for automated SMD/SMT assembly processes. Key electrical specifications include a maximum operating voltage of 6 VDC, a hold current of 750 mA, and a trip current of 1.5 A. The device exhibits an initial resistance of 40 mOhms maximum and a post-trip resistance of 200 mOhms maximum. It supports a maximum fault current rating of 100 A and operates within a temperature range of -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection by raising internal resistance as the device heats up during fault events
• Features a compact leadless surface-mount package compatible with modern reflow and wave soldering procedures
• Offers automatic circuit restoration after cooling down, eliminating the need for manual replacement

Ptc Resettable Fuses Applications

• Protection of actuators, screens, and small motors in commercial and passenger automotive systems
• Overcurrent safeguarding for telephony and networking equipment against high-voltage fault currents
• Circuit protection for portable electronics and battery-powered devices requiring low-profile components

Ptc Resettable Fuses Procurement Notes

Verify the specific ordering suffix and packaging configuration when sourcing this component. Confirm that the selected variant matches the required hold and trip current ratings for the target application. Ensure compatibility with standard surface-mount assembly processes and check for any RoHS or REACH compliance declarations relevant to the manufacturing region.

Ptc Resettable Fuses Selection Notes

Select this component based on the circuit's maximum operating voltage and normal running current requirements. Ensure the hold current exceeds the expected operational load while the trip current remains below the threshold that could damage sensitive downstream components. Consider the thermal environment and mounting orientation, as ambient temperature affects the effective current carrying capacity of the device.

Ptc Resettable Fuses Part Context

This part belongs to the POLY-FUSE 1206L series of resettable fuses from Littelfuse. These devices are engineered for applications requiring robust overcurrent protection in space-constrained environments. The series is widely utilized across automotive, telecommunications, and consumer electronics sectors where reliable, reusable circuit protection is essential for system integrity and safety.

Ptc Resettable Fuses Replacement Considerations

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