RXEF185-2

Ptc Resettable Fuses Overview

The Littelfuse RXEF185-2 is a PolySwitch radial leaded PPTC resettable fuse 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 72 VDC. The device offers a maximum interrupting rating of 40 A and an initial resistance of 90 mOhms. Operating within a temperature range of -40°C to +85°C, it utilizes a radial termination style suitable for PCB mounting.

Ptc Resettable Fuses Feature Summary

• Provides resettable overcurrent protection using polymer positive temperature coefficient technology
• Supports high-voltage applications up to 72 VDC with radial lead termination
• Compatible with high-volume electronics assembly processes

Ptc Resettable Fuses Applications

• Satellite video receivers
• Industrial controls
• Computer motherboards
• USB hubs, ports and peripherals

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix '-2' against official Littelfuse documentation to confirm packaging configuration, such as reel or cut tape quantities. Ensure the 72VDC rating aligns with circuit requirements. Cross-reference agency approvals like UL and CSA if required by design specifications. Confirm RoHS compliance status through current datasheets.

Ptc Resettable Fuses Selection Notes

Select this component when a 1.85 A hold current and 72 VDC rating are required for radial mounting. Compare against the RXEF185K variant for differences in package form factor or certification. Evaluate thermal derating curves for operation near the +85°C limit. Consider the 40 A interrupting capacity for fault scenarios.

Ptc Resettable Fuses Part Context

Part of the Littelfuse RXEF series, which provides low hold currents down to 50 mA and high voltage ratings up to 72 V. This series represents a comprehensive set of radial-leaded PPTC products compatible with automated assembly. It serves as a resettable alternative to single-use fuses in various electronic circuits.

Ptc Resettable Fuses Replacement Considerations

RXEF185K is a similar radial leaded variant within the same series. Verify if the specific agency approvals or physical dimensions of the replacement match the original design constraints.