RXEF050-2

Ptc Resettable Fuses Overview

The Littelfuse RXEF050-2 is a radial leaded PolySwitch resettable fuse from the RXEF series, designed for PCB mounting. It features a hold current of 500 mA and a trip current of 1 A, with a maximum voltage rating of 72 VDC. The device has a maximum interrupting rating of 40 A and an initial resistance of 1.17 ohms. It operates within a temperature range of -40°C to +85°C and utilizes a radial lead configuration with a 5.8 mm lead spacing.

Ptc Resettable Fuses Feature Summary

• Provides resettable overcurrent protection using PPTC technology
• Compatible with high-volume electronics assembly processes
• Compliant with RoHS standards and free of lead and halogens

Ptc Resettable Fuses Applications

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

Ptc Resettable Fuses Procurement Notes

Verify that the specific suffix '-2' corresponds to the required packaging format, as standard RXEF050 devices are often listed in bulk while variants may use tape and reel. Confirm the manufacturer source is Littelfuse, as cross-manufacturer listings exist for similar part numbers. Ensure the component meets the necessary agency approvals for the target application region.

Ptc Resettable Fuses Selection Notes

Select this component when a 72 VDC rating is required alongside a 500 mA hold current. The radial lead form factor suits through-hole PCB layouts where space allows for the disk package dimensions. Consider the 1.17 ohm resistance for circuit impact analysis and ensure the operating environment stays within the specified -40°C to +85°C thermal limits.

Ptc Resettable Fuses Part Context

The RXEF series represents a comprehensive line of radial-leaded PPTC products offering low hold currents and high voltage ratings. This specific model falls within the standard disk package family, providing reliable circuit protection for various electronic assemblies without requiring surface mount reflow processes.

Ptc Resettable Fuses Replacement Considerations

The RXEF050 is a direct functional equivalent with identical electrical specifications but may differ in packaging format. Verify that any substitute maintains the same 72 VDC rating and radial lead spacing to ensure mechanical compatibility.