30R800UH-S

Ptc Resettable Fuses Overview

The Littelfuse 30R800UH-S is a polymeric PTC resettable fuse designed for through-hole mounting. It features an 8A hold current and a 16A trip current, with a maximum voltage rating of 30VDC. The component exhibits a typical resistance of 0.005 Ohms and can withstand a maximum surge current of 40A. It operates within a temperature range of -40°C to 85°C and has a time-to-trip characteristic of approximately 18.8 seconds under specified conditions. The device provides overcurrent protection by increasing resistance in response to excessive heat generated by fault currents.

Ptc Resettable Fuses Feature Summary

• Self-resetting polymer technology eliminates the need for manual replacement after fault clearance
• Radial leaded construction facilitates automated insertion and standard PCB assembly processes
• High thermal sensitivity enables rapid response to overcurrent conditions without mechanical wear

Ptc Resettable Fuses Applications

• Overcurrent protection for portable electronic devices
• Protection circuits in automotive electronics and accessories
• Surge suppression in telecommunications equipment
• Battery pack protection in consumer gadgets

Ptc Resettable Fuses Procurement Notes

Verify that the suffix 'S' denotes the specific tape-and-reel packaging variant rather than a functional change. Confirm the hold current rating matches system requirements during procurement. Ensure the voltage rating aligns with the circuit's maximum operating potential. Check for RoHS compliance status if required by project specifications. Validate the package dimensions against the target PCB footprint before ordering.

Ptc Resettable Fuses Selection Notes

Select this component when a self-resetting solution is preferred over traditional fuses to reduce maintenance costs. The 8A hold current suits applications requiring moderate continuous load capacity. The 30VDC rating limits suitability to low-voltage DC systems only. Consider the 18.8s trip time for circuits tolerant of brief overload durations. Evaluate the radial package constraints against available board space and mounting orientation requirements.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse POLYFUSE 30R series, which offers a range of current ratings from 50mA to 15A. The series utilizes polymeric positive temperature coefficient technology for reliable overcurrent protection. Components in this family share similar physical characteristics and resettable functionality, differing primarily in electrical ratings such as hold current and trip current thresholds.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include other 30R series variants with matching 8A hold and 16A trip currents. Verify that alternative parts maintain the same 30VDC voltage rating and radial package style. Cross-reference datasheets to ensure equivalent time-to-trip characteristics and thermal performance. Confirm that any replacement part meets the same agency approvals and environmental specifications.