# 0603L100SLYR (Component)
## Description
Polymeric PTC Resettable Fuse 6V 1 A Ih Surface Mount 0603 (1608 Metric), Concave
polyfuse 1A 0603
The 0603L100SLYR is a surface-mount resettable fuse (PPTC – Polymeric Positive Temperature Coefficient) designed to provide overcurrent protection in low-voltage electronic circuits. When excessive current flows, the device increases its resistance sharply, limiting current and protecting downstream components. Once the fault condition is removed and power is cycled or reduced, the fuse resets automatically.
This component is widely used in compact electronic devices due to its small 0603 footprint, making it suitable for space-constrained PCB designs.
Key Features
Resettable overcurrent protection device
Compact 0603 surface-mount package
Fast response to fault conditions
Automatic reset after fault removal
RoHS compliant and lead-free construction
Low resistance in normal operation
Stable performance over multiple trip cycles
Electrical Characteristics
Hold current: 1.0 A
Trip current: approximately 2.0 A
Maximum voltage rating: 6 V
Maximum current rating: 40 A (short duration fault current)
Initial resistance: low resistance typical for minimal voltage drop
Resistance after trip: significantly increased to limit current
Thermal Characteristics
Operating temperature range: −40 °C to +85 °C
Trip time dependent on current and ambient temperature
Self-heating mechanism triggers resistance increase
Mechanical Characteristics
Package type: 0603 (1608 metric)
Mounting type: surface mount (SMD)
Body material: polymer-based PTC
Terminal finish: solderable metal electrodes compatible with reflow soldering
Applications
USB ports and power lines
Battery-powered devices
Consumer electronics
Portable devices
Embedded systems and IoT hardware
Power supply protection circuits
Compliance and Standards
RoHS compliant
Halogen-free (typical for series)
Meets industry standards for resettable fuses
#commonpartslibrary
#circuitprotection
#ptc
#fuse
## Component Details
- **Owner:** lcsc
- **Created:** 11/5/2024
- **Last Updated:** 4/28/2026
- **Visibility:** Public
- **Datasheet URL:** https://www.littelfuse.com/assetdocs/low-rho-datasheet-update?assetguid=b786faf0-de16-4763-9d22-6b8080943caf
- **JLCPCB Part Class:** Extended Part
- **LCSC Part Number:** C207017
- **Part Type:** Resettable Fuses
- **License:** https://creativecommons.org/licenses/by/4.0/
- **Manufacturer Part Number:** 0603L100SLYR
- **Package or Case Code:** R0603
- **Manufacturer Name:** Littelfuse Inc.
- **Product Info Url:** https://lcsc.com/product-detail/Others_Littelfuse_0603L100SLYR_Littelfuse-0603L100SLYR_C207017.html
- **Used in:** 7 projects
## Distributor Pricing (qty 1)
*Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.*
| Distributor | Unit Price (qty 1) | Stock |
|------------|--------------------|-------|
| [Arrow](https://www.arrow.com/en/products/0603l100slyr/littelfuse?utm_currency=USD®ion=nac) | $0.8239 | 1.6K |
| [LCSC](https://www.lcsc.com/product-detail/C207017.html) | N/A | N/A |
| [Mouser](https://www.mouser.com/ProductDetail/Littelfuse/0603L100SLYR?qs=%252BPPFKVzHyAKqCAJtLoK6vw%3D%3D) | $1.64 | 14K |
| [Verical](https://www.verical.com/pd/littelfuse-ptc-resettable-fuse-0603L100SLYR-1877582?utm_currency=USD) | N/A | N/A |
- **Part Type:** Circuit Protection Devices
- **Manufacturer:** Littelfuse
- **MPN:** 0603L100SLYR
- **Mount Type:** Surface Mount
- **Package / Case Code:** TO
- **Pin Count:** 2
- **Compliance:** Rohs, Halogen Free, Lead Free
## Pins
| Pin | Name | Type |
|-----|------|------|
| 1 | 1 | |
| 2 | 2 | |
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*Generated from [https://www.flux.ai/lcsc/0603l100slyr~rhwp](https://www.flux.ai/lcsc/0603l100slyr~rhwp)*