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Product Detailed Parameters
- Description：PTC RESET FUSE 6V 500MA 0805
- Series：POLY-FUSE®, 0805L
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：6V
- Current - Hold (Ih) (Max)：500 mA
- Current - Trip (It)：1:00 AM
- Current - Max：100 A
- Time to Trip：100 ms
- Resistance - Initial (Ri) (Min)：150 mOhms
- Resistance - Post Trip (R1) (Max)：850 mOhms
- 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)：0.049" (1.25mm)
- Lead Spacing：-
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Overview
The Littelfuse 0805L050WR is a surface-mount polymer resettable fuse from the POLYFUSE 0805L Series. It provides overcurrent protection with a hold current of 500mA and a trip current of 1A. The device features a maximum rated voltage of 6VDC and operates within a temperature range of -40°C to 85°C. Certified to AEC-Q200 automotive quality standards, this component offers reliable circuit protection in a compact SMD package suitable for space-constrained applications.
Feature Summary
- Provides reliable overcurrent protection through resistance increase upon heating
- Automotive-grade reliability certified to AEC-Q200 standards
- Compact surface-mount design suitable for PCB integration
Applications
- Overcurrent protection for automotive electronic circuits
- Protection of sensitive components in telecommunications equipment
- Circuit safeguarding in portable consumer electronics
Procurement Notes
Verify the exact part number including suffixes against official Littelfuse documentation to ensure correct specifications. Confirm RoHS compliance status and lead-free requirements prior to ordering. Cross-reference datasheet parameters such as hold current and voltage rating with system design requirements to prevent mismatch. Ensure storage conditions align with manufacturer guidelines to maintain component integrity before assembly.
Selection Notes
Select this component based on specific circuit current requirements, ensuring the hold current exceeds normal operating current while the trip current remains below fault thresholds. Consider the maximum operating voltage and ambient temperature range to guarantee performance under all expected conditions. Evaluate the physical footprint constraints to confirm compatibility with the printed circuit board layout and soldering processes.
Part Context
This device belongs to the POLYFUSE 0805L Series of resettable fuses manufactured by Littelfuse Inc. These components are designed as solid-state alternatives to traditional fusible links, offering reusable protection capabilities. The series is widely utilized in industries requiring robust overcurrent protection solutions that can automatically restore functionality after fault clearance.
Replacement Considerations
The part number 0805L050WR serves as a direct identifier for this specific variant. Verify equivalent specifications when considering alternative manufacturers or series replacements to ensure functional compatibility.
