RXE050-1

Ptc Resettable Fuses Overview

The Littelfuse RXEF050-1 is a resettable PTC fuse from the RXEF series, designed for PCB mounting with radial leads. It features a hold current of 500 mA and a trip current of 1 A, operating at a maximum voltage of 72 VDC. The device has a maximum fault current rating of 40 A and an initial resistance of 1.17 ohms. It functions within a temperature range of -40°C to +85°C, with a lead spacing of 5.8 mm and a diameter of 7.9 mm.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit protection through self-resetting polymer technology
• Offers high breaking capacity for robust fault handling
• Supports standard PCB mounting via radial lead configuration

Ptc Resettable Fuses Applications

• Overcurrent protection in portable electronic devices
• Circuit safeguarding in automotive electronics
• Protection for peripheral interfaces and communication ports

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix and series designation against official Littelfuse documentation to ensure exact electrical matching. Confirm that the maximum voltage and current ratings align with the target application's safety requirements. Check for RoHS compliance status and required certification marks relevant to the deployment region.

Ptc Resettable Fuses Selection Notes

Select this component based on its 72VDC rating and 500mA hold current capabilities. Ensure the physical dimensions fit the available PCB space and that the thermal environment remains within the specified operating range. Consider the reset time characteristics relative to the system's recovery needs after a fault event.

Ptc Resettable Fuses Part Context

This part belongs to the RXEF series of resettable fuses, which are engineered for compact circuit protection applications. The series is characterized by low resistance and fast response times, suitable for protecting sensitive components in various consumer and industrial electronic systems where manual fuse replacement is impractical.

Ptc Resettable Fuses Replacement Considerations

Consult official Littelfuse substitution guides for verified equivalents. Generic alternatives may not match the specific tripping characteristics or voltage ratings required for safe operation.