RXEF050S-0.236

Ptc Resettable Fuses Overview

The RXEF050S-0.236 is a surface-mount resettable fuse manufactured by Littelfuse Inc., designed for overcurrent protection in electronic circuits. This specific model features a holding current of 0.50 amperes and a trip current of 1.00 ampere, ensuring reliable circuit interruption when thresholds are exceeded. The device operates within a voltage range up to 60 volts DC and can withstand a maximum fault current of 100 amperes. It utilizes a thermoplastic polymer element that increases resistance upon heating, automatically resetting once cooled. The component is housed in a compact 1206 metric package, facilitating integration into space-constrained printed circuit board layouts while providing robust protection against thermal runaway conditions.

Ptc Resettable Fuses Feature Summary

• Automatic reset functionality eliminates the need for manual replacement after fault clearance
• Thermoplastic polymer construction provides stable performance across varying temperature environments
• Surface-mount design enables automated assembly and reduced footprint on PCBs

Ptc Resettable Fuses Applications

• Portable consumer electronics requiring compact overcurrent protection
• Battery-powered devices needing resettable safety components
• Communication equipment interfaces susceptible to transient surges

Ptc Resettable Fuses Procurement Notes

Verify the exact suffix designation during procurement to ensure compatibility with required voltage and current ratings. Confirm that the specified package dimensions align with the target PCB layout constraints. Cross-reference the manufacturer's latest datasheet to validate environmental operating ranges before finalizing component selection for production.

Ptc Resettable Fuses Selection Notes

Select this component based on the circuit's normal operating current being below the holding current threshold. Ensure the expected fault current does not exceed the maximum trip current rating to prevent damage. Consider the ambient temperature conditions, as higher temperatures may reduce the effective holding current capability of the device.

Ptc Resettable Fuses Part Context

This part belongs to the RXEF series of resettable fuses, which are engineered for high-reliability applications. The series offers various current ratings and package options to suit different circuit requirements. The RXEF050S-0.236 specifically addresses needs for low-current protection in dense electronic assemblies.

Ptc Resettable Fuses Replacement Considerations

Direct replacements must match the 0.50A holding current and 1206 package size. Verify that alternative components support the same 60V DC rating and 100A max fault current capacity to maintain circuit integrity.