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Product Detailed Parameters
- Description：PTC 6V POLYFUSE SMT 0603 SL 1.75
- Series：PolySwitch®, LoRho
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：6V
- Current - Hold (Ih) (Max)：1.75 A
- Current - Trip (It)：3.5 A
- Current - Max：6:00 AM
- Time to Trip：600 ms
- Resistance - Initial (Ri) (Min)：5 mOhms
- Resistance - Post Trip (R1) (Max)：60 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)：0.040" (1.02mm)
- Lead Spacing：-
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Overview
The Littelfuse 0603L175SLYRT is a surface-mount polymer PTC resettable fuse from the LoRho series, designed for overcurrent protection in compact electronics. It features a maximum voltage rating of 6V and a hold current (Ih) of 1.75A. The device trips at 3.5A with a maximum resistance of 60 mOhms after tripping. It supports a maximum fault current of 50A and operates within a temperature range of -40°C to +85°C. The component measures 1.60mm x 0.80mm x 1.00mm and is supplied in tape and reel packaging.
Feature Summary
- Ultra-low internal resistance minimizes voltage drop in sensitive circuits
- Automatic resettable protection eliminates need for manual replacement
- Miniature 0603 footprint allows for high-density board layouts
Applications
- Portable consumer electronics circuit protection
- Battery pack overcurrent safeguarding
- USB port and data line protection
- Automotive infotainment system components
Procurement Notes
Verify that the ordering suffix 'YRT' corresponds to the specific tape and reel packaging configuration required for automated assembly processes. Confirm RoHS3 compliance status and ensure the selected variant matches the intended reflow soldering profile requirements for the manufacturing line.
Selection Notes
Select this component when circuit design demands minimal power loss alongside rapid response to fault conditions. The low resistance characteristic makes it suitable for applications where maintaining signal integrity or battery efficiency is critical compared to standard PPTC alternatives.
Part Context
This part belongs to the Low Rho SMD PolySwitch family, which offers higher hold currents in smaller packages than traditional PPTCs. It provides UL recognition and TUV approval, ensuring compliance with international safety standards for general electronic equipment protection.
Replacement Considerations
Eaton PTSLR06036V175 is a documented substitute option. Verify electrical parameter alignment and physical dimensions before integration into existing designs.
