3425L300/36MR

Ptc Resettable Fuses Overview

The Littelfuse 3425L300/36MR is a surface-mount PolySwitch resettable PTC device designed for overcurrent protection. It features a hold current of 3.0 A and a trip current of 6.0 A, with a maximum voltage rating of 6 VDC. The component exhibits a typical resistance of 0.06 ohms at 20°C and a maximum initial resistance of 0.12 ohms. It operates within a temperature range of -40°C to 85°C and offers a fault current rating of 100 A.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection by increasing resistance as it heats during fault conditions
• Resettable functionality allows circuit recovery without manual replacement after the fault clears
• Surface-mount construction enables direct soldering to PCBs for compact electronic designs

Ptc Resettable Fuses Applications

• Portable electronics battery pack protection
• USB port and peripheral circuit safeguarding
• Data line and signal path overcurrent protection

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix '36MR' against official Littelfuse documentation to confirm tape-and-reel packaging specifications and quantity per reel. Ensure the voltage rating aligns with system requirements, as this variant is rated for 6 VDC. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before ordering.

Ptc Resettable Fuses Selection Notes

Select this component when low-profile surface-mount protection is required for low-voltage circuits. The 3.0 A hold current suits applications with moderate steady-state loads. Verify that the 6 VDC rating matches the operating voltage. Consider the 0.06 ohm typical resistance for minimal voltage drop impact in sensitive power paths compared to higher-resistance alternatives.

Ptc Resettable Fuses Part Context

This device belongs to the Littelfuse PolySwitch family of resettable fuses. These solid-state devices utilize polymer technology to provide automatic circuit protection. The 3425 series specifically targets surface-mount applications, offering a compact form factor suitable for modern printed circuit board layouts where space constraints are critical for assembly.

Ptc Resettable Fuses Replacement Considerations

Consult Littelfuse official substitution guides for equivalent PolySwitch surface-mount devices with matching 3.0 A hold current and 6 VDC ratings. Verify thermal characteristics and package dimensions to ensure compatibility with existing PCB footprints and reflow soldering profiles.