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Product Detailed Parameters
- Description：PTC RESET FUSE 6V 1A 0603
- Series：POLY-FUSE®, LoRho
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：6V
- Current - Hold (Ih) (Max)：1:00 AM
- Current - Trip (It)：1.8 A
- Current - Max：50 A
- Time to Trip：300 ms
- Resistance - Initial (Ri) (Min)：40 mOhms
- Resistance - Post Trip (R1) (Max)：120 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)：0.030" (0.75mm)
- Lead Spacing：-
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Overview
The Littelfuse 0603L100SLYR is a surface-mount PolySwitch resettable PPTC fuse from the Low Rho series. It features a hold current of 1 A and a trip current of 1.8 A, rated for a maximum voltage of 6 VDC. The device has a low resistance of 40 mOhms and dissipates up to 600 mW. Packaged in a compact 0603 (1608 metric) SMD footprint with dimensions of 1.8 mm length, 1.0 mm width, and 1.0 mm height, it operates within a temperature range of -40°C to +85°C.
Feature Summary
- Provides overcurrent protection through automatic reset functionality upon cooling after fault removal
- Features low impedance design to minimize power loss and heat generation during normal operation
- Utilizes a small surface-mount package suitable for high-density PCB layouts
Applications
- Portable electronic devices requiring compact circuit protection
- USB-powered peripherals and interfaces
- Battery-powered consumer electronics
Procurement Notes
Verify the specific suffix YR against official Littelfuse documentation to confirm tape and reel packaging specifications. Ensure the component matches the required 0603 footprint and electrical ratings for the target application. Cross-reference datasheet revisions to confirm parameter stability before integration into production designs.
Selection Notes
Select this component when a 1 A hold current and 6 VDC rating are sufficient for the circuit requirements. Consider the 40 mOhms resistance for voltage drop calculations. Evaluate thermal management needs given the 600 mW power dissipation capability. Confirm that the 0603 package size aligns with available board space constraints.
Part Context
This part belongs to the Littelfuse 0603L Series of PolySwitch resettable fuses. The series is characterized by low resistance values and small form factors designed for modern surface-mount technology applications. It serves as a reusable alternative to traditional one-time fuses in low-voltage DC circuits.
Replacement Considerations
Consult official Littelfuse substitution guides for verified equivalents. Generic PTC fuses may not match the precise trip characteristics or physical dimensions required for reliable performance in this specific footprint.
