30R500UF

Ptc Resettable Fuses Overview

The Littelfuse 30R500UF is a PolySwitch resettable PTC device designed for overcurrent protection. It features a maximum voltage rating of 30 VDC and a hold current of 5 A. The trip current is specified at 10 A, with a maximum fault current rating of 100 A. Initial resistance is 34 mOhms maximum, and power dissipation is 2.6 W. The component operates within a temperature range of -40°C to +85°C and utilizes radial leads with a 5.1 mm spacing.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection for circuits, wiring harnesses, and PCB components
• Solid-state design raises resistance as it heats to limit current flow
• Radial leaded form factor suitable for through-hole mounting

Ptc Resettable Fuses Applications

• Automotive circuit protection
• Telecom equipment safeguarding
• Power supply overcurrent defense

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix 'UF' against official Littelfuse documentation to confirm package style and tape-and-reel specifications. Ensure the procurement order matches the exact part number to avoid receiving alternative packaging variants such as bulk or ammo pack configurations which may differ in handling requirements.

Ptc Resettable Fuses Selection Notes

Select this component when a 30 VDC system requires a 5 A hold current capability. Verify that the application's peak inrush currents remain below the 10 A trip threshold to prevent nuisance tripping. Confirm that the available board space accommodates the radial lead dimensions and that the operating environment stays within the specified thermal limits.

Ptc Resettable Fuses Part Context

This device belongs to the 30R series of PolySwitch resettable fuses from Littelfuse. The series offers various hold current options within a 30 VDC rating envelope. These components are engineered to replace traditional fusible links in applications requiring automatic recovery after fault clearance.

Ptc Resettable Fuses Replacement Considerations

Consult official Littelfuse substitution guides for verified equivalents. Generic cross-references may not match the specific resistance or trip characteristics required for sensitive circuit protection.