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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：-
- Qualification：-
- 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 is a surface-mount PolySwitch resettable PTC device designed for overcurrent protection. It belongs to the 0805L series and features a 0805 (2012 metric) package with dimensions of 2.2 mm length, 1.5 mm width, and 0.75 mm height. The component has a hold current of 350 mA and a trip current of 750 mA. It operates at a maximum voltage of 6 VDC with a resistance of 1.2 Ohms. The rated fault current is 100 A, and power dissipation is 500 mW. Operating temperature ranges from -40°C to +85°C.
Feature Summary
- Provides reliable overcurrent protection by raising resistance as it heats to limit current flow.
- Functions as a solid-state fuse that resets automatically after cooling down following a fault event.
- Designed for direct soldering to printed circuit boards using standard surface mount technology.
Applications
- Protection of automotive actuators, screens, and small motors in commercial and passenger vehicles.
- Overcurrent safeguarding for telephony and networking equipment against high-voltage fault currents.
- Circuit protection for rechargeable batteries against short circuits and overcharging conditions.
Procurement Notes
Verify the specific ordering suffix YR to confirm the reel packaging configuration and tape width specifications. Ensure the selected variant matches the required hold and trip current ratings for the target application circuit. Confirm RoHS compliance status through official manufacturer documentation prior to integration into environmentally regulated assemblies.
Selection Notes
Select this component based on the required hold current of 350 mA and maximum operating voltage of 6 VDC. Consider the 0805 footprint constraints and the thermal management requirements associated with the 500 mW power dissipation rating. Evaluate the trip time characteristics relative to the protected circuit's tolerance for transient overcurrent events during normal operation.
Part Context
This part is a member of the 0805L series of PolySwitch resettable fuses manufactured by Littelfuse. These devices are engineered to provide compact, reusable overcurrent protection solutions. The series supports various current ratings within a standardized surface-mount form factor, facilitating easy integration into modern electronic designs requiring space-efficient safety components.
Replacement Considerations
Consult official Littelfuse substitution guides for verified alternative part numbers within the 0805L family or other compatible PolySwitch series. Ensure any substitute maintains identical electrical parameters including hold current, trip current, and voltage rating to guarantee circuit compatibility.
