RUSBF185

Ptc Resettable Fuses Overview

The Littelfuse RUSBF185 is a PolySwitch resettable PPTC device designed for overcurrent protection. It features a hold current of 1.85 A and a trip current of 3.7 A, with a maximum voltage rating of 16 VDC. The component has a maximum resistance of 90 mOhms and a rated fault current of 40 A. It operates within a temperature range of -40°C to +85°C and utilizes a radial leaded PCB mount package with a 5.8 mm lead spacing.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection by raising resistance as it heats to limit current flow during fault conditions.
• Offers resettable functionality, allowing the device to return to low-resistance state after cooling down post-fault.

Ptc Resettable Fuses Applications

• USB hubs, ports and peripherals
• Computer motherboards
• Industrial controls

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix (e.g., AP) against the official datasheet to confirm packaging format such as cut tape or reel. Ensure the voltage rating of 16 VDC aligns with the target circuit requirements. Confirm RoHS compliance status through the manufacturer's latest documentation before finalizing procurement specifications.

Ptc Resettable Fuses Selection Notes

Select this component when a low-voltage application requires a resettable fuse with a 1.85 A hold current. The 16 VDC rating limits suitability to low-voltage circuits. Consider the radial leaded form factor for through-hole PCB mounting. Verify that the 40 A max fault current capability meets the prospective short-circuit levels of the protected system.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse PolySwitch family of resettable fuses. These devices are solid-state PPTC components used to protect circuits from overcurrent events. The radial leaded variant is specifically designed for PCB mounting applications where through-hole termination is preferred over surface-mount technologies.

Ptc Resettable Fuses Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult the official Littelfuse selection guide for equivalent ratings.