0603L200SLYR

Overview

The Littelfuse 0603L200SLYR is a PolySwitch resettable PPTC device from the Low Rho series, designed for surface-mount overcurrent protection. It features a 0603 (1608 metric) package with dimensions of 1.8 mm length, 1.0 mm width, and 0.75 mm height. The component has a maximum voltage rating of 6 VDC, a hold current of 200 mA, and a trip current of 400 mA. Its initial resistance is typically 350 mOhms, with a maximum power dissipation of 600 mW. It supports a maximum fault current of 50 A and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Ultra-low internal resistance enables minimal voltage drop in sensitive circuits
• Automatic resettable protection eliminates the need for manual fuse replacement after fault events
• Miniature 0603 footprint allows for higher hold current density in compact board designs

Applications

• Portable electronic devices requiring compact circuit protection
• Consumer electronics with limited board space constraints
• Battery-powered equipment needing overcurrent safeguarding

Procurement Notes

Verify the specific manufacturer part number against official Littelfuse documentation to ensure authenticity. Confirm that the Low Rho series designation matches the required electrical characteristics for your design. Check for RoHS compliance status as indicated in the latest datasheet. Ensure storage conditions align with manufacturer recommendations to maintain component integrity before soldering.

Selection Notes

Select this component when ultra-low resistance is critical to prevent voltage sag in low-voltage systems. The 0603 size offers a balance between current handling capacity and spatial efficiency compared to smaller packages. Consider the 6V rating limit when designing for slightly higher supply voltages. Evaluate the thermal environment to ensure the hold current remains effective at maximum operating temperatures.

Part Context

This device belongs to the Littelfuse Low Rho SMD PolySwitch family, which specializes in polymer positive temperature coefficient resettable fuses. The series is engineered to provide overcurrent protection with significantly lower resistance than standard PPTC devices. It targets applications demanding high reliability and small form factors in general electronics and portable devices.

Replacement Considerations

Consult Littelfuse documentation for direct cross-references within the Low Rho series. Verify that any substitute maintains the same 0603 footprint and 6VDC rating. Ensure the replacement holds equivalent current ratings to avoid premature tripping or inadequate protection.