1210L175WR

Ptc Resettable Fuses Overview

The Littelfuse 1210L175WR is a surface-mount polymer PTC resettable fuse from the Low Rho (LoRho) series. It features a 1210 (3225 metric) package with dimensions of 3.43 mm length, 2.8 mm width, and 1 mm height. The device has a maximum operating voltage of 6 V and a hold current of 1.75 A. Trip current is specified at 3.5 A, with a maximum rated current of 50 A. Initial resistance is 40 mOhms. It operates within a temperature range of -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

• Low initial resistance for minimal power loss
• Automatic reset capability after fault clearance
• Compact surface-mount footprint

Ptc Resettable Fuses Applications

• Portable electronics protection
• Battery pack overcurrent protection
• USB port circuit safeguarding

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix 'WR' against the manufacturer datasheet to confirm tape-and-reel packaging and RoHS compliance status. Ensure the selected variant matches the required 6V rating and 1.75A hold current specifications for the target application design.

Ptc Resettable Fuses Selection Notes

Select this component when low impedance is critical for efficiency in 6V systems. The 1210 form factor offers a balance between current handling capacity and board space constraints compared to smaller packages.

Ptc Resettable Fuses Part Context

Part of the 1210L Low Rho family designed for high-current applications requiring low resistance. This series provides robust protection for sensitive circuits while maintaining signal integrity through reduced voltage drop during normal operation.

Ptc Resettable Fuses Replacement Considerations

Check for direct substitutes within the same 1210L series with identical 1.75A hold current and 6V rating. Verify package compatibility and thermal characteristics before substituting.