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Product Detailed Parameters
- Description：PTC RESET FUSE 30V 50MA 0805
- Series：POLY-FUSE®, 0805L
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：30V
- Current - Hold (Ih) (Max)：50 mA
- Current - Trip (It)：150 mA
- Current - Max：40 A
- Time to Trip：1.5 s
- Resistance - Initial (Ri) (Min)：3.6 Ohms
- Resistance - Post Trip (R1) (Max)：20 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)：0.049" (1.25mm)
- Lead Spacing：-
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Overview
The Littelfuse 0805L005/30YR is a surface-mount polymeric PTC resettable fuse from the 0805L series. It features a hold current of 50 mA and a trip current of 150 mA, rated for 30 VDC. The device has a maximum resistance range of 3.6 Ω to 20 Ω and operates within a temperature range of -40°C to +85°C. Designed for overcurrent protection in compact circuits, it utilizes a standard 0805 (2012 metric) package with SMD/SMT termination.
Feature Summary
- Provides automatic circuit recovery after fault clearance without manual replacement
- Offers dual protection against overcurrent and excessive temperature conditions
- Utilizes polymer technology for rapid response to fault currents
Applications
- Portable electronic devices requiring compact overcurrent protection
- Consumer electronics circuits needing resettable safety components
- Industrial control systems utilizing surface-mount assembly
Procurement Notes
Verify component authenticity through authorized Littelfuse distributors or certified suppliers. Confirm RoHS compliance status and specific datasheet revisions prior to integration. Ensure storage conditions maintain material integrity. Validate that the received part matches the exact 0805L005/30YR designation to guarantee electrical performance specifications.
Selection Notes
Select this component when circuit design requires a 50 mA hold current and 30 VDC rating. The 0805 footprint suits space-constrained PCB layouts. Consider the 3.6 Ω to 20 Ω resistance range for voltage drop calculations. Evaluate thermal management requirements given the -40°C to +85°C operating window for reliable long-term operation.
Part Context
This part belongs to the Littelfuse 0805L series of polymeric PTC resettable fuses. These components are designed for surface-mount technology applications. The series provides versatile overcurrent protection solutions across various electronic industries. The 0805L005/30YR specifically addresses low-current protection needs in modern portable and industrial equipment.
Replacement Considerations
Compatible substitutes include the 0805L005/30YR-A variant. Both parts share identical electrical characteristics and physical dimensions. Verify pinout compatibility and mounting orientation before substitution. Ensure alternative sources meet the same Littelfuse quality standards.
