RXEF090S

Ptc Resettable Fuses Overview

The Littelfuse RXEF090S is a PolySwitch radial-leaded PPTC resettable fuse designed for circuit protection. It features a maximum voltage rating of 72 VDC and a hold current of 900 mA, with a trip current of 1.8 A. The device has a maximum fault current rating of 40 A and an initial resistance of 310 mOhms. It operates within a temperature range of -40°C to +85°C and utilizes a reel packaging format.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection for circuits, wiring harnesses, and PCB components through self-resetting polymer technology.
• Compatible with high-volume electronics assembly processes including reflow and wave soldering.
• Complies with RoHS standards and is lead-free and halogen-free.

Ptc Resettable Fuses Applications

• Satellite video receivers
• Industrial controls
• Computer motherboards
• USB hubs, ports and peripherals

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix 'S' indicates reel packaging when ordering. Confirm that the 72V rating and 900mA hold current match the design requirements. Ensure compatibility with standard PCB mounting techniques for radial leaded devices. Check for updated agency approvals such as UL, CSA, TUV, and CQC before final integration.

Ptc Resettable Fuses Selection Notes

Select this component for applications requiring radial termination and a 72V maximum voltage rating. The 900 mA hold current suits moderate load protection needs. Consider the 310 mOhms initial resistance for power loss calculations. Verify that the 40 A interrupting rating covers potential fault currents in the target circuit design.

Ptc Resettable Fuses Part Context

The RXEF090S belongs to the Littelfuse RXEF series of PolySwitch resettable fuses. This series represents a comprehensive set of radial-leaded PPTC products offering low hold currents and high voltage ratings. The family is engineered for robust overcurrent protection in various electronic assemblies.

Ptc Resettable Fuses Replacement Considerations

RXEF090 is a compatible bulk-packaged alternative with identical electrical specifications. RXEF090S-2 is another variant within the same series. Verify package type (reel vs. bulk) and exact resistance values when substituting.