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Product Detailed Parameters
- Description：PTC RESET FUSE 6V 350MA 0603
- Series：POLY-FUSE®, 0603L
- 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：40 A
- Time to Trip：100 ms
- Resistance - Initial (Ri) (Min)：200 mOhms
- Resistance - Post Trip (R1) (Max)：1 Ohms
- Resistance - 25°C (Typ)：-
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：0603 (1608 Metric), Concave
- Size / Dimension：0.063" L x 0.032" W (1.60mm x 0.80mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.061" (1.55mm)
- Lead Spacing：-
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Overview
The Littelfuse 0603L035YR is a POLY-FUSE resettable PTC device in a 0603 surface-mount package. It features a hold current of 350 mA and a trip current of 700 mA at 25°C. Rated for a maximum voltage of 6 VDC, it offers a typical resistance of 1.2 Ohms and a maximum fault current rating of 40 A. The component operates within a temperature range of -40°C to +85°C and dissipates up to 500 mW.
Feature Summary
- Provides automatic circuit protection through polymer positive temperature coefficient technology
- Enables repeated use after fault clearance without manual replacement
- Designed for compact surface-mount integration on printed circuit boards
Applications
- Portable electronic devices requiring overcurrent protection
- Consumer electronics circuits with limited space constraints
- Battery-powered equipment needing reliable resettable fusing
Procurement Notes
Verify the specific suffix against official Littelfuse documentation to confirm exact electrical tolerances and packaging configurations. Ensure the procurement source provides valid RoHS compliance certificates matching the current manufacturing standards. Cross-reference the manufacturer part number with authorized distributor catalogs to prevent counterfeit components.
Selection Notes
Select this component when circuit design requires a low-profile 0603 footprint with a 350 mA holding current. Confirm that the system's maximum operating voltage does not exceed 6 VDC. Evaluate thermal management requirements to ensure the 500 mW power dissipation limit is respected during normal operation.
Part Context
This device belongs to the 0603L series of POLY-FUSE resettable fuses. The series utilizes proprietary polymer technology to provide overcurrent protection in a miniature form factor suitable for high-density PCB layouts. It serves as a reusable alternative to traditional one-time fuse elements.
Replacement Considerations
Consult official Littelfuse substitution guides for verified equivalents. Generic cross-references may differ in trip characteristics or physical dimensions.
