0603L150SLYR LITTELFUSE Resettable Fuse (Other) In Stock
Littelfuse 0603L150SLYR is a 1.5 A hold-current resettable PPTC fuse in a compact 0603 (1.8 mm × 1.0 mm) SMT package rated at 0.6 W power dissipation. Provides automatic overcurrent protection that resets after fault removal without board intervention. Stocked at global distributors with worldwide shipping available.
- Manufacturer
- LITTELFUSE
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- 0603L150SLYR Datasheet PDF
- Category
- Resettable Fuse
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1.5 A hold current with automatic reset eliminates manual fuse replacement after overcurrent faults in USB and power lines
- Compact 0603 SMT package (1.8 mm × 1.0 mm × 1.0 mm) enables high-density board layouts with 0.6 W rated power dissipation
- REACH-compliant polymeric PTC construction provides stable trip characteristics across thousands of reset cycles without degradation
- 7-inch tape-and-reel packaging supports high-volume automated SMT pick-and-place production with minimal handling
Applications
The 0603L150SLYR is used for overcurrent protection on USB power lines, Li-ion battery packs, and portable device input stages where automatic reset is preferred over one-time fuses. Its 1.5 A hold current suits 5 V USB-A ports and single-cell battery charging circuits where brief overcurrent events should not require board removal for fuse replacement. Engineers also deploy this PPTC device on motor driver inputs and sensor supply rails in industrial IoT nodes to guard against wiring faults while maintaining 0.6 W steady-state dissipation capacity.
Specifications
| Reach Compliance Code | Compliant |
| YTEOL | 7.4 |
| Mounting Feature | SURFACE MOUNT |
| Package Height | 1mm |
| Package Length | 1.8mm |
| Package Shape | RECTANGULAR PACKAGE |
| Package Style | SMT |
| Package Width | 1mm |
| Packing Method | TR, 7 INCH |
| Rated Power Dissipation (P) | 0.6W |
| Reference Standard | CUL; TUV; UL |
| Resistance | 0.007Ω |
| Resistor Type | PTC RESETTABLE FUSE |
| Surface Mount | YES |
| Terminal Placement | DUAL ENDED |
| Terminal Shape | WRAPAROUND |
| Thermistor Application | OVERCURRENT PROTECTION |
| Working Voltage | 6V |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8533.40.80.70 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 0603L150SLYR:
suggested
suggested
Frequently Asked Questions
What hold current and trip mechanism does the 0603L150SLYR use, and how does it reset after a fault?
The 0603L150SLYR has a 1.5 A hold current — the maximum continuous current it passes without tripping. When current exceeds the trip threshold (typically around 3 A at 25°C), the polymeric PTC element heats up and resistance rises sharply to limit current. Once the fault is cleared and power is removed momentarily, the element cools and resistance drops back to milliohm levels, automatically restoring normal operation without any manual intervention.
For a USB 2.0 port protection circuit, how does the 0603L150SLYR's 1.5 A rating fit the specification?
USB 2.0 specifies a maximum load current of 500 mA, while USB Battery Charging 1.2 allows up to 1.5 A. The 0603L150SLYR's 1.5 A hold current allows full USB-BC 1.2 charging current to pass continuously, while tripping at approximately 3 A to protect the host PCB traces and connector pins rated for 5 V operation. The 0603 SMT body fits easily in the tight board area near USB Type-A or Micro-B connector landing pads.
How many reset cycles can the 0603L150SLYR sustain, and what does this mean for field-deployed equipment?
Littelfuse PPTC fuses in the 0603L series are designed for hundreds to thousands of trip-and-reset cycles with minimal change in hold current or resistance. For field-deployed IoT sensors or industrial meters subject to occasional wiring faults, this means the device can self-recover from repeated 3 A to 5 A fault events without board replacement, reducing maintenance costs over a product lifetime of 7+ years compared to one-time blow fuses rated for a single fault event.
What power dissipation and package dimensions should designers check when substituting the 0603L150SLYR for a larger PPTC fuse?
The 0603L150SLYR measures 1.8 mm × 1.0 mm × 1.0 mm (L × W × H) and is rated for 0.6 W maximum power dissipation. Designers substituting a larger 1206 or 1812 PPTC fuse must verify that the smaller 0603 footprint fits the PCB land pattern and that the 0.6 W dissipation rating is not exceeded at the expected fault current level — at 3 A trip current, the initial I²R heating must be managed within that 0.6 W steady-state limit before the trip event concludes.
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