0805L100WR

Overview

The Littelfuse 0805L100WR is a surface-mount PolySwitch resettable PTC device from the 0805L series. It features a hold current of 1.0 A and a trip current of 2.0 A, with a maximum voltage rating of 60 VDC. The component has a maximum resistance of 0.07 Ω and a minimum resistance of 0.035 Ω. It supports a fault current rating of 100 A and offers a power dissipation of 1.0 W. The device operates within a temperature range of -40°C to +85°C and utilizes tin-plated copper terminals in an 0805 package.

Feature Summary

• Provides automatic overcurrent protection by increasing resistance during thermal events
• Enables circuit recovery without manual fuse replacement after fault clearance
• Offers low-profile surface-mount construction for compact PCB integration

Applications

• Portable electronic devices requiring compact circuit protection
• Consumer electronics and peripheral interfaces
• Telecommunications equipment signal lines
• Battery packs and rechargeable power sources

Procurement Notes

Verify that the suffix 'WR' corresponds to the specific tape-and-reel packaging configuration required for automated assembly processes. Confirm that the 60VDC rating aligns with the system's maximum operating voltage to ensure adequate safety margins against transient spikes. Cross-reference the hold current specifications with the application's steady-state load requirements to prevent nuisance tripping during normal operation.

Selection Notes

Select this component when the circuit demands a 1.0A continuous current capacity with rapid response to overcurrent conditions. The 0805 form factor is suitable for space-constrained designs where standard axial fuses are impractical. Ensure the application environment remains within the specified -40°C to +85°C operational range to maintain consistent performance characteristics and reliability standards.

Part Context

This part belongs to the Littelfuse 0805L series of PolySwitch resettable fuses, designed for surface-mount technology. The series provides reliable overcurrent protection for various electronic applications. The 0805L100WR specifically addresses circuits requiring higher current handling capabilities compared to lower-rated variants in the same footprint family.

Replacement Considerations

Direct substitutes include other 0805L series parts with matching electrical ratings, such as the 0805L100 or 0805L100SLYR. Verify that alternative components meet the same voltage, current, and package dimensions to ensure compatibility with existing PCB layouts and thermal management strategies.