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Product Detailed Parameters
- Description：PTC RESET FUSE 6V 350MA 0805
- Series：POLY-FUSE®, 0805L
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：6V
- Current - Hold (Ih) (Max)：350 mA
- Current - Trip (It)：750 mA
- Current - Max：100 A
- Time to Trip：100 ms
- Resistance - Initial (Ri) (Min)：250 mOhms
- Resistance - Post Trip (R1) (Max)：1.2 Ohms
- Resistance - 25°C (Typ)：-
- Operating Temperature：-40°C ~ 85°C
- Grade：Automotive
- Qualification：AEC-Q200
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：0805 (2012 Metric), Concave
- Size / Dimension：0.083" L x 0.053" W (2.10mm x 1.35mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.030" (0.75mm)
- Lead Spacing：-
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Overview
The Littelfuse 0805L035YR-A is a surface-mount PolySwitch resettable PTC fuse from the 0805L series. It features a hold current of 350 mA and a trip current of 750 mA, with a maximum voltage rating of 6 VDC. The device has an initial resistance of 1.2 Ohms and a power dissipation of 500 mW. Operating within a temperature range of -40°C to +85°C, it utilizes a 0805 (2012 metric) SMD package measuring 2.2 mm in length, 1.5 mm in width, and 0.75 mm in height.
Feature Summary
- Provides reliable overcurrent protection by increasing resistance when heated during fault conditions
- Offers automatic circuit recovery without manual replacement after the fault clears
- Designed for direct surface mounting on printed circuit boards
Applications
- Protection of portable electronics and battery-powered devices
- Overcurrent safeguarding in telecommunications equipment
- Circuit protection for automotive electronic modules
Procurement Notes
Verify that the specific suffix 'A' aligns with your required tape-and-reel packaging configuration or specific variant designation. Confirm RoHS compliance status through official Littelfuse documentation prior to finalizing procurement orders. Ensure the selected component matches the exact electrical ratings required for your circuit design specifications.
Selection Notes
Select this component based on the 350 mA hold current requirement and the 6 VDC maximum voltage constraint. Consider the 1.2 Ohm initial resistance impact on circuit performance. Evaluate the thermal environment to ensure operation remains within the specified -40°C to +85°C range for optimal reliability and consistent tripping characteristics.
Part Context
This part belongs to the Littelfuse 0805L series of PolySwitch resettable fuses. These devices are widely used for compact overcurrent protection in space-constrained applications. The series provides a solid-state alternative to traditional fusible links, offering reusable protection for sensitive components against short circuits and excessive current loads.
Replacement Considerations
Direct substitutes include other 0805L series variants with matching electrical parameters. Verify equivalent hold current, trip current, and voltage ratings before substitution. Cross-reference Littelfuse documentation for approved replacements ensuring identical package dimensions and thermal characteristics.
