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Product Detailed Parameters
- Description：PTC RESET FUSE 3.0A 6V 0603
- Series：POLY-FUSE®, LoRho
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：6V
- Current - Hold (Ih) (Max)：3:00 AM
- Current - Trip (It)：6:00 AM
- Current - Max：50 A
- Time to Trip：5 s
- Resistance - Initial (Ri) (Min)：3 mOhms
- Resistance - Post Trip (R1) (Max)：30 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 0.031" W (1.60mm x 0.80mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.039" (1.00mm)
- Lead Spacing：-
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Overview
The Littelfuse 0603L300SLYR is a surface-mount PolySwitch resettable PTC device from the Low Rho series. It features a hold current of 3 A and a trip current of 6 A at maximum voltage of 6 VDC. The component exhibits a low resistance of 30 mOhms and supports a maximum fault current of 50 A. Designed for SMD/SMT installation, it operates within a temperature range of -40°C to +85°C. The package dimensions are 1.8 mm in length, 1 mm in width, and 1 mm in height, with a power dissipation rating of 600 mW.
Feature Summary
- Provides overcurrent protection through automatic resistance increase during fault conditions
- Enables circuit recovery without manual fuse replacement after fault clearance
- Offers low on-resistance to minimize normal operating voltage drop
Applications
- Portable electronic devices requiring compact circuit protection
- Consumer electronics with limited board space constraints
- Battery-powered equipment needing resettable overcurrent safeguards
Procurement Notes
Verify the complete part number including suffixes against manufacturer documentation to ensure correct electrical ratings and packaging configuration. Confirm RoHS compliance status and specific reel quantities required for production integration. Cross-reference datasheet specifications with design requirements before procurement.
Selection Notes
Select this component when circuit protection requires a 3 A hold current within a 6 VDC system. Ensure the application environment remains within the specified -40°C to +85°C operating temperature range. Verify that the 0603 footprint aligns with the PCB layout and that the 50 A maximum fault current capability exceeds potential surge levels.
Part Context
This device belongs to the Littelfuse Low Rho series of PolyFuse resettable fuses. These components utilize polymer technology to provide reliable overcurrent protection in surface-mount applications. The series is designed for high-volume manufacturing processes and offers consistent performance across various consumer and industrial electronic designs.
Replacement Considerations
Consult official Littelfuse substitution guides for verified equivalents. Do not assume compatibility based solely on package size or nominal current ratings. Verify all electrical parameters against the target application requirements before substituting.
