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Product Detailed Parameters
- Description：PTC RESET FUSE 6V 1.75A 0603
- Series：POLY-FUSE®, LoRho
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：6V
- Current - Hold (Ih) (Max)：1.75 A
- Current - Trip (It)：3.5 A
- Current - Max：50 A
- 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 0.032" W (1.60mm x 0.80mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.039" (1.00mm)
- Lead Spacing：-
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Overview
The Littelfuse 0603L175SLYR is a surface-mount polymer PTC resettable fuse from the Low Rho series, designed for general electronics overcurrent protection. It features a 0603 (1608 metric) package with a maximum holding current of 1.75 A and a trip current of 3.5 A. The device supports a maximum voltage of 6 VDC and a maximum fault current of 50 A. Its initial resistance is as low as 5 mOhms, rising to a maximum post-trip resistance of 60 mOhms. Operating temperatures range from -40°C to +85°C, with a standard trip time of 600 ms.
Feature Summary
- Ultra-low internal resistance minimizes voltage drop in sensitive circuits
- Automatic resettable protection eliminates manual replacement requirements
- Miniature footprint allows higher hold current density compared to standard PPTCs
Applications
- General electronics circuit protection
- Portable electronic devices
- Consumer hardware power lines
Procurement Notes
Verify component authenticity through authorized Littelfuse distributors or certified partners. Confirm RoHS compliance status and specific reel packaging quantities upon order confirmation. Ensure storage conditions maintain moisture sensitivity level integrity prior to soldering processes.
Selection Notes
Select this component when ultra-low resistance is critical for maintaining signal integrity or power efficiency. The 0603 size offers space savings while providing 1.75 A protection. Consider thermal derating curves for high-temperature environments exceeding standard operating ranges.
Part Context
This part belongs to the Low Rho SMD PolySwitch family, engineered for applications requiring minimal voltage drop. It complements larger packages by offering similar electrical performance in a reduced physical profile, suitable for dense PCB layouts.
Replacement Considerations
Eaton PTSLR06036V175 is a documented substitute option. Verify pin compatibility and electrical parameters before implementation.
FAQ
What is the maximum fault current rating?
The maximum fault current rating is 50 A.
Is the device compliant with environmental regulations?
Yes, it is RoHS compliant, lead-free, and halogen-free.
