RLD30P090UF

Ptc Resettable Fuses Overview

The Littelfuse RLD30P090UF is a POLYFUSE resettable PTC device designed for overcurrent protection. It features a maximum voltage rating of 30 V and a hold current of 0.9 A. The trip current is specified at 1.8 A, with a maximum fault current rating of 40 A. The initial resistance is typically 20 mOhms. The component operates within a temperature range of -40°C to +85°C and utilizes a radial leaded package with a 10.2 mm lead spacing.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection by increasing resistance in response to thermal heating during fault conditions
• Offers resettable functionality to restore circuit operation after the fault condition is removed
• Supports through-hole mounting via radial leads for integration into printed circuit boards

Ptc Resettable Fuses Applications

• Protection of computer motherboards and peripheral interfaces
• Overcurrent safeguarding for USB hubs, ports, and peripherals
• Circuit protection in industrial control systems and transformers
• Surge protection for telephony and networking equipment line cards

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix configuration against the manufacturer's official datasheet to ensure compatibility with required RoHS compliance standards and packaging formats. Confirm that the radial lead pitch matches the target PCB footprint design. Check for any recent product change notifications regarding material composition or testing standards before finalizing procurement specifications.

Ptc Resettable Fuses Selection Notes

Select this component when a 30 VDC maximum voltage rating and 0.9 A hold current are required for circuit protection. Ensure the application environment remains within the -40°C to +85°C operating temperature range. Verify that the 1.8 A trip current threshold aligns with the protected circuit's normal operating limits to prevent nuisance tripping during transient loads.

Ptc Resettable Fuses Part Context

This part belongs to the RLD30 series of POLYFUSE resettable fuses manufactured by Littelfuse. The series provides comprehensive overcurrent protection solutions using polymer positive temperature coefficient technology. These devices are engineered for high-volume electronics assembly and offer a balance of voltage rating and hold current capabilities for various consumer and industrial applications.

Ptc Resettable Fuses Replacement Considerations

Consult the official Littelfuse replacement guide for verified substitute part numbers. Cross-reference technical parameters such as hold current, trip current, and voltage ratings to ensure functional equivalence. Do not assume interchangeability based on physical dimensions alone without verifying electrical characteristics.