RGEF500-0.178

Ptc Resettable Fuses Overview

The Littelfuse RGEF500-0.178 is a polymeric positive temperature coefficient (PTC) resettable fuse designed for overcurrent protection in electronic circuits. It features a hold current of 5A and a trip current of 8.5A, with a maximum voltage rating of 16VDC. The device exhibits a fast trip time of 2 seconds under fault conditions and offers low initial resistance of 15 mOhms. With a rated current capacity of 100A and power dissipation of 2.6W, it provides reliable circuit safeguarding. The component utilizes a radial lead configuration and operates within a temperature range of -40°C to 60°C.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit protection against overcurrent conditions through self-resetting functionality
• Features low initial resistance to minimize power loss during normal operation
• Offers fast response time to interrupt excessive current flow quickly
• Eliminates the need for traditional fuse holders due to compact design

Ptc Resettable Fuses Applications

• Protection of electrical and electronic circuits from overcurrent damage
• Overcurrent protection in portable electronic devices
• Circuit safeguarding in automotive electronics applications
• Protection in industrial control systems requiring resettable fusing

Ptc Resettable Fuses Procurement Notes

Verify component authenticity by checking manufacturer markings and datasheet specifications. Confirm that the part number matches the required electrical parameters including hold current, trip current, and voltage ratings. Ensure compliance with relevant safety certifications such as UL, CSA, and TUV for intended application regions. Validate package type and lead configuration match board layout requirements before procurement.

Ptc Resettable Fuses Selection Notes

Select this component based on specific current and voltage requirements for circuit protection. Consider the hold current and trip current values to ensure proper protection thresholds. Evaluate the operating temperature range to confirm suitability for the environmental conditions. Assess the physical dimensions and lead configuration for compatibility with the printed circuit board design. Verify certification requirements for the target market and application industry.

Ptc Resettable Fuses Part Context

The RGEF500-0.178 belongs to the RGEF series of polymeric PTC resettable fuses manufactured by Littelfuse. This series is designed for applications requiring reliable overcurrent protection with resettable functionality. The components feature various current ratings and voltage options to suit different circuit protection needs. The RGEF series is commonly used in consumer electronics, automotive, and industrial applications where space constraints and resettable protection are critical.

Ptc Resettable Fuses Replacement Considerations

The RGEF500-0.178 is listed as obsolete and no longer manufactured. Available substitutes include other PTC resettable fuses with similar electrical characteristics from Littelfuse or alternative manufacturers. When selecting a replacement, ensure the new component matches the hold current, trip current, voltage rating, and physical dimensions of the original part.