60R090XU

Ptc Resettable Fuses Overview

The Littelfuse 60R090XU is a PolySwitch resettable PTC device designed for overcurrent protection. It features a hold current of 900 mA and a trip current of 1.8 A, with a maximum voltage rating of 60 VDC. The component has a maximum resistance of 470 mOhms and a fault current rating of 40 A. It operates within a temperature range of -40°C to +85°C and dissipates up to 990 mW. The device utilizes radial leads with a 5.1 mm spacing and measures 11.2 mm in diameter by 3.1 mm in length.

Ptc Resettable Fuses Feature Summary

• Provides reliable overcurrent protection through self-resetting polymer technology
• Offers low-resistance performance in the conductive state
• Supports PCB mounting via radial lead configuration

Ptc Resettable Fuses Applications

• Telecom equipment circuit protection
• Power supply input protection
• Automotive electronics safeguarding

Ptc Resettable Fuses Procurement Notes

Verify the specific datasheet revision and agency approvals (UL, CSA, TUV) required for your target market before finalizing procurement. Confirm that the radial lead pitch and physical dimensions align with your PCB footprint design. Ensure the thermal environment allows for proper heat dissipation given the power dissipation limits. Cross-reference the manufacturer's ordering suffixes to ensure the correct packaging format is selected for your assembly process.

Ptc Resettable Fuses Selection Notes

Select this component when a resettable fuse is preferred over single-use fuses for circuit maintenance efficiency. The 60V rating and 900mA hold current make it suitable for low-voltage DC applications. Consider the trip current ratio and time-to-trip characteristics relative to the protected circuit's surge tolerance. Evaluate the ambient operating temperature range to ensure the device does not nuisance-trip during normal operation or fail to trip during faults.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse POLYFUSE series of PolySwitch resettable PTC devices. These components are solid-state devices that increase resistance significantly upon heating due to overcurrent conditions. They are widely used in consumer electronics, industrial controls, and telecommunications to protect sensitive components from damage caused by short circuits or excessive current loads.

Ptc Resettable Fuses Replacement Considerations

Consult Littelfuse official documentation for verified cross-reference part numbers. Ensure any substitute maintains identical hold current, trip current, voltage rating, and package dimensions. Verify that alternative components meet the same regulatory approvals and thermal specifications required for the application.