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Product Detailed Parameters
- Description：PTC RESET FUSE 6V 1.5A 0603
- Series：POLY-FUSE®, LoRho
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：6V
- Current - Hold (Ih) (Max)：1.5 A
- Current - Trip (It)：3:00 AM
- Current - Max：50 A
- Time to Trip：500 ms
- Resistance - Initial (Ri) (Min)：7 mOhms
- Resistance - Post Trip (R1) (Max)：80 mOhms
- Resistance - 25°C (Typ)：-
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：0603 (1608 Metric), Concave
- Size / Dimension：0.063" L x 0.032" W (1.60mm x 0.80mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.039" (1.00mm)
- Lead Spacing：-
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Overview
The Littelfuse 0603L150SLYR is a surface-mount polymer PTC resettable fuse from the Low Rho series. It features a 6 VDC maximum voltage rating and a 1.5 A hold current. The device trips at 3 A with a maximum resistance of 80 mOhms in the tripped state. It supports a maximum fault current of 50 A and operates between -40°C and +85°C. The component measures 1.6 mm by 1.0 mm with a height of 1 mm, dissipating up to 600 mW.
Feature Summary
- Provides automatic resettable overcurrent protection without manual intervention.
- Features ultra-low internal resistance for minimal voltage drop in low-voltage circuits.
- Utilizes a miniature surface-mount package to conserve printed circuit board space.
- Offers fast response characteristics to detect and limit fault currents effectively.
Applications
- Overcurrent protection for portable electronic devices
- Circuit protection for USB peripheral interfaces
- Power supply line protection in consumer electronics
Procurement Notes
Verify the specific suffix YR against official Littelfuse documentation to confirm reel packaging specifications. Ensure the selected variant matches the required RoHS compliance status for your manufacturing process. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and current production status before finalizing procurement orders.
Selection Notes
Select this component when designing circuits requiring low profile protection with high hold current density. The 0603 footprint allows integration into space-constrained layouts while maintaining robust electrical performance. Consider the 80 mOhm resistance impact on system efficiency during fault conditions. Verify that the 6 VDC rating aligns with the operating voltage of the protected circuitry to ensure reliable operation.
Part Context
This device belongs to the Littelfuse Low Rho SMD PolySwitch series, engineered for general electronics overcurrent protection. The series emphasizes ultra-low internal resistance and thin profiles compared to standard PPTCs. It maintains high electrical performance within a compact form factor, suitable for modern miniaturized electronic designs requiring reliable thermal magnetic switching.
Replacement Considerations
Consult official Littelfuse substitution guides for verified equivalents. Generic replacements may not match the specific Low Rho resistance or trip characteristics. Validate any alternative part against the original datasheet parameters to ensure compatibility with the existing circuit design and safety certifications.
