LTST-C191KGKT: High-Brightness Green SMD LED by Lite-On Inc. | 35mcd, 2V, 130 Viewing Angle
LTST-C191KGKT: Premium Green SMD LED for High-Visibility Applications
Lite-On Inc., a global leader in optoelectronic solutions, presents the LTST-C191KGKT an ultra-bright green SMD LED designed to deliver exceptional performance in space-constrained applications. This comprehensive guide explores its technical specifications, advantages, and diverse use cases to help engineers and designers make informed decisions.
In-Depth Product Analysis
Technical Specifications
| Parameter | Value |
|---|---|
| Color | Green (571nm dominant wavelength) |
| Brightness | 35 millicandela (mcd) @ 20mA |
| Forward Voltage | 2V typical |
| Viewing Angle | 130 wide visibility |
| Package | 0603 (1608 Metric) SMD |
| Dimensions | 1.60mm 0.80mm 0.65mm |
| Lens | Clear rectangular flat-top |
Optical Performance
The LTST-C191KGKT produces a pure green light with:
- Dominant Wavelength: 571nm ( 3nm tolerance)
- Peak Wavelength: 574nm
- Color Chromaticity: Meets CIE 1931 standards
Its clear lens ensures 92% minimum light transmission efficiency, while the rectangular emission pattern provides uniform illumination.
Electrical Characteristics
- Forward Current: 20mA (standard), 30mA (absolute max)
- Reverse Voltage: 5V maximum
- Power Dissipation: 75mW
- Operating Temperature: -40 C to +85 C
Design Advantages
Space-Saving 0603 Package
The compact 1.6mm 0.8mm footprint enables:
- High-density PCB layouts
- Integration in wearable devices
- Miniaturized control panels
Enhanced Reliability Features
- Lead-free and RoHS compliant
- Moisture sensitivity level (MSL): 1 (unlimited floor life)
- ESD protection: HBM Class 2 ( 4kV)
Industry Applications
Automotive Electronics
Ideal for:
- Dashboard indicator lights
- HVAC control illumination
- Door lock status indicators
Consumer Electronics
Perfect for:
- Smartphone notification LEDs
- TV and monitor power indicators
- Smart home device status lights
Industrial Equipment
Used in:
- Machine operation status panels
- Test and measurement equipment
- Process control indicators
Why Choose LTST-C191KGKT?
- Superior Brightness: 35mcd output ensures excellent visibility even in bright environments
- Energy Efficient: Low 2V forward voltage reduces power consumption
- Wide Viewing Angle: 130 visibility eliminates dead zones
- Manufacturing Friendly: Compatible with standard SMT processes
- Long Lifespan: 50,000+ hours operational life
Technical Comparison
Compared to standard 0603 LEDs:
| Feature | LTST-C191KGKT | Typical 0603 LED |
|---|---|---|
| Brightness | 35mcd | 20-25mcd |
| Viewing Angle | 130 | 120 |
| Color Consistency | 3nm | 5nm |
Design Considerations
Recommended Circuit Design
For optimal performance:
- Use 100 current-limiting resistor (for 5V supply)
- Maintain 20mA drive current
- Implement reverse polarity protection
PCB Layout Guidelines
- Maintain 0.5mm clearance from other components
- Use 0.3mm solder paste stencil
- Recommended reflow profile: IPC/JEDEC J-STD-020
Purchasing Information
The LTST-C191KGKT is available in:
- Tape and reel packaging (3000 units per reel)
- Sample quantities available
- Lead time: Standard 4-6 weeks
Conclusion
The LTST-C191KGKT from Lite-On represents the perfect combination of brightness, efficiency, and reliability in an ultra-compact SMD package. Its 35mcd output, wide 130 viewing angle, and precise 571nm green wavelength make it an outstanding choice for designers requiring high-visibility indicators in limited spaces. Whether for automotive dashboards, consumer electronics, or industrial control panels, this LED delivers consistent, long-lasting performance.
For volume pricing, detailed datasheets, or design support, contact our technical sales team today. Experience the Lite-On difference in your next project with the superior quality of the LTST-C191KGKT green SMD LED.