RLD30P110UF

Ptc Resettable Fuses Overview

The Littelfuse RLD30P110UF is a PolySwitch resettable PPTC fuse from the RLD30 series, designed for through-hole PCB mounting. It features a maximum voltage rating of 30 V and a hold current (Ih) of 1.1 A. The device trips at a current of 2.2 A and withstands a maximum fault current of 40 A. Initial resistance is typically low, rising significantly upon tripping to limit circuit current. Operating temperatures range from -40°C to +85°C with radial leads spaced 5.1 mm apart.

Ptc Resettable Fuses Feature Summary

• Provides automatic overcurrent protection by increasing resistance when heated during fault conditions
• Offers reliable circuit safeguarding without requiring manual replacement after tripping
• Designed for robust performance in harsh environments with wide temperature tolerance

Ptc Resettable Fuses Applications

• Protection of telecommunications equipment and wiring harnesses
• Overcurrent safeguarding for automotive circuits and small motors
• Defense against short circuits in battery-powered devices and rechargeable batteries

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix 'UF' against official Littelfuse documentation to confirm lead plating or packaging variations. Ensure the selected variant matches the required hold current and voltage ratings for the target application. Cross-reference datasheets for any recent RoHS compliance updates or material changes affecting the component specifications.

Ptc Resettable Fuses Selection Notes

Select this component based on the 1.1 A hold current and 30 V maximum voltage requirements. Consider the 5.1 mm lead spacing for PCB layout compatibility. Evaluate the thermal environment to ensure operation within the -40°C to +85°C range. Confirm that the trip current of 2.2 A aligns with the circuit's normal operating margins to prevent nuisance tripping.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse POLYFUSE RLD30 series of resettable fuses. These devices utilize polymer positive temperature coefficient technology to provide solid-state overcurrent protection. The series offers various hold currents and package options, serving as a reusable alternative to traditional one-time fuses in power supply and signal line applications.

Ptc Resettable Fuses Replacement Considerations

Equivalent parts include the 30R110UU from the same manufacturer family. Verify that substitute components match the 1.1 A hold current, 30 V rating, and radial lead configuration to ensure mechanical and electrical compatibility.