72R065XU

Ptc Resettable Fuses Overview

The Littelfuse 72R065XU is a PolySwitch radial leaded PPTC resettable fuse designed for overcurrent protection. It features a hold current of 650 mA and a trip current of 1.3 A, with a maximum operating voltage of 72 V DC. The device has a typical resistance of 720 mΩ and can withstand fault currents up to 40 A. It operates within a temperature range of -40°C to 85°C and dissipates up to 880 mW. The component utilizes a radial lead form factor suitable for PCB mounting.

Ptc Resettable Fuses Feature Summary

• Provides reliable automatic reset overcurrent protection for circuits and wiring harnesses
• Offers compact radial leaded design for easy soldering onto printed circuit boards
• Ensures mechanical stability and secure mounting in industrial applications

Ptc Resettable Fuses Applications

• Protection of automotive electronic circuits and wiring harnesses
• Overcurrent safeguarding for telecom equipment and networking ports
• PCB component protection in general industrial electronics

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix 'XU' against official Littelfuse documentation to confirm tape and reel packaging or specific compliance status. Ensure the part number matches the required hold and trip current specifications for your circuit design. Cross-reference with the manufacturer's latest datasheet to confirm RoHS and REACH SVHC declarations prior to procurement.

Ptc Resettable Fuses Selection Notes

Select this component when a resettable solution is preferred over single-use fuses for 72 V DC systems requiring approximately 650 mA continuous current. Consider the 720 mΩ initial resistance for voltage drop calculations. Evaluate the 40 A max fault current rating against potential short-circuit scenarios to ensure adequate safety margins for the protected circuitry.

Ptc Resettable Fuses Part Context

This device belongs to the PolySwitch radial leaded PPTC series from Littelfuse. These components are engineered to raise resistance as they heat during overcurrent events, limiting current flow automatically. The series supports various voltage ratings up to 600 V DC and is widely used in automotive, telecom, and power supply applications for robust circuit protection.

Ptc Resettable Fuses Replacement Considerations

Consult Littelfuse official substitution guides for equivalent PolySwitch radial parts with matching 72 V DC voltage and 650 mA hold current ratings. Verify that any substitute maintains compatible trip characteristics and physical dimensions for PCB integration.