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Product Detailed Parameters
- Description：PTC RESET FUSE 6V 350MA 0402
- Series：LoRho Surface Mount
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR)
- Type：Polymeric
- Voltage - Max：6V
- Current - Hold (Ih) (Max)：350 mA
- Current - Trip (It)：700 mA
- Current - Max：50 A
- Time to Trip：100 ms
- Resistance - Initial (Ri) (Min)：50 mOhms
- Resistance - Post Trip (R1) (Max)：700 mOhms
- Resistance - 25°C (Typ)：-
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：0402 (1005 Metric), Concave
- Size / Dimension：0.039" L x 0.020" W (1.00mm x 0.50mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.024" (0.60mm)
- Lead Spacing：-
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Overview
The Littelfuse 0402L035SLYR is a surface-mount polymer PTC resettable fuse from the LoRho series. It features a 6 VDC maximum voltage rating and a 350 mA hold current. The device trips at 700 mA and supports a maximum fault current of 50 A. Its initial resistance is typically low, with a maximum post-trip resistance of 400 mOhms. The component operates within a temperature range of -40°C to +85°C and is housed in a compact 0402 (1005 metric) package.
Feature Summary
- Polymer positive temperature coefficient construction for automatic reset capability
- Low resistance design minimizes power loss in sensitive circuits
- Compact surface mount footprint suitable for high-density PCB layouts
Applications
- Portable electronic devices requiring overcurrent protection
- Consumer electronics circuit boards
- Battery-powered equipment protection
Procurement Notes
This specific part number is obsolete and no longer manufactured by Littelfuse. Verification of availability should focus on finding direct substitute components or alternative packaging suffixes that remain in production. Ensure any replacement matches the original electrical specifications and physical dimensions to maintain circuit integrity.
Selection Notes
Designers should consider the 0402L035SLKR as a direct replacement option within the same LoRho series. Selection criteria must prioritize matching the hold current, trip current, and maximum voltage ratings. Verify that the substitute component meets the required thermal performance and package size constraints for the target application.
Part Context
The 0402L035SLYR belongs to the Littelfuse LoRho series of surface-mount PPTC devices. This series is engineered for applications demanding low resistance and small form factors. The component provides reliable overcurrent protection while allowing for manual or automatic reset after fault conditions are cleared.
Replacement Considerations
The 0402L035SLKR is listed as a direct substitute for this obsolete part. Verify compatibility regarding electrical ratings and mechanical fit before implementation.
