LED Lighting

LED Lighting - White

Part Number	Description / PDF	Quantity
SPMWHD32AMD7XAQKS0 Samsung Semiconductor	LED MID PWR LM301B 3MMX3MM	0
SPMWHT327FD5GBP0S2 Samsung Semiconductor	LED WHITE 6500K 80CRI SMD	0
SPMWHT327FD5GBR0S4 Samsung Semiconductor	LED WHITE 5000K 80CRI SMD	0
SCS8RT93HPL2RLS03F Samsung Semiconductor	LED LM102A COOL WHT 5000K 2SMD	21182
SPMWH1228FD5WAVMS4 Samsung Semiconductor	LED LM281B WARM WHT 3000K 2SMD	39990
SPMWH1228FD7WAT0SA Samsung Semiconductor	LED LM281B+ NEUT WHT 4000K SMD	0
SPMWH1229AD7SGT0SB Samsung Semiconductor	LED 4000K 90CRI SMD	38570
SPMWHT327FD5GBV0S4 Samsung Semiconductor	LED WHITE 3000K 80CRI SMD	0
SPMWHT541MP5WATKS4 Samsung Semiconductor	LED 4000K 80CRI SMD	0
SPHWH2L3D30CD4PTK3 Samsung Semiconductor	LED LH351B COOL WHITE 6500K 2SMD	0
SPMWH1221FD5GBTKSA Samsung Semiconductor	LED 4000K 80CRI SMD	0
SPMWHD32AMH5XAU0SL Samsung Semiconductor	LED MID PWR LM301H 3MMX3MM	0
SPHWH2L3D30ED4QTM3 Samsung Semiconductor	LED LH351B COOL WHITE 5700K SMD	0
SPMWHT541MP5WAVMS5 Samsung Semiconductor	LED LM561B PLUS WARM WHT 3000K	17099
SPMWH1228FD5WAT0S3 Samsung Semiconductor	LED 4000K 80CRI SMD	17593
SPMWHT327FD5GBQMS3 Samsung Semiconductor	LED WHITE 5700K 80CRI SMD	23707
SPMWHT541MP7WATNS0 Samsung Semiconductor	LED 4000K 90CRI SMD	0
SPMWH1221FD5GBR0SA Samsung Semiconductor	LED 5000K 80CRI SMD	0
SPMWHT541MD5WAWHSD Samsung Semiconductor	LED 5630 WM WHT 2700K 80CRI SMD	0
SPHWHTL3D305E6WPH3 Samsung Semiconductor	LED LH351A WARM WHITE 2700K 2SMD	959

LED Lighting - White

1. Overview

White Light-Emitting Diodes (LEDs) are semiconductor devices that convert electrical energy into visible white light. They represent a fundamental shift from traditional lighting technologies due to their energy efficiency, longevity, and controllability. Modern white LEDs primarily use blue-emitting chips coated with phosphor materials to produce broad-spectrum white light, enabling precise color tuning and dimming capabilities.

2. Major Types & Functional Classification

Type	Functional Features	Application Examples
Blue Chip + Yellow Phosphor	Cost-effective, CRI 70-90, correlated color temperature (CCT) 2700-6500K	General lighting, residential bulbs
RGB Tri-color	Tunable color output, high CRI (>90), complex driver requirements	Stage lighting, architectural accenting
UV Chip + RGB Phosphor	Enhanced color rendering, reduced blue light hazard	Museum lighting, medical diagnostics
Remote Phosphor	Uniform light distribution, improved thermal management	Commercial downlights, automotive headlamps

3. Structure & Components

Typical white LED construction includes:

Die: Gallium Nitride (GaN) on sapphire substrate emitting blue light (450nm)
Phosphor Layer: Cerium-doped YAG (Y₃Al₅O₁₂) converting blue to yellow wavelengths
Encapsulation: Silicon dioxide lens with secondary optical elements
Thermal Interface: Metal-core PCB (MCPCB) for heat dissipation
Driver Circuit: Constant current source with EMI filtering

4. Key Technical Parameters

Parameter	Typical Range	Importance
Luminous Flux	100-20,000 lm	Determines light output capability
Color Temperature	2700K-6500K	Affects ambiance and visual comfort
Color Rendering Index (CRI)	70-98	Measures color fidelity accuracy
Luminous Efficacy	100-200 lm/W	Energy conversion efficiency metric
Lifespan	25,000-100,000 hrs	Total cost of ownership factor
Forward Voltage	2.8-3.6 V	Driver design specification

5. Application Fields

Residential: Smart bulbs, under-cabinet lighting
Commercial: Retail accent lighting, office panel lights
Industrial: High-bay warehouse fixtures, machine vision systems
Transportation: Automotive headlights, aircraft cabin lighting
Healthcare: Surgical lighting, circadian rhythm regulation

6. Leading Manufacturers & Products

Manufacturer	Key Product Series	Technical Highlights
Signify (Philips)	Luxeon 3535L	180 lm/W efficacy, 90 CRI, automotive grade
OSRAM Opto	Ostar Lighting	Surface-mount package, 2000cd/m luminance
Cree (Wolfspeed)	XHP50.2	High-density emitter, 20A drive current capability
Seoul Semiconductor	WICOP2	Chip-level integration, 0.2W-100W scalability

7. Selection Recommendations

Key considerations:

Optical requirements: Match CRI and CCT to application needs
Thermal management: Select appropriate heatsink and package type
Electrical compatibility: Verify driver specifications and dimming protocols
Form factor: Consider footprint constraints (e.g., 2835, 5630 packages)
Regulatory compliance: Ensure ENERGY STAR, DLC, or UL certification

8. Industry Trends

Emerging developments include:

Micro-LED integration for displays and Li-Fi communication
Quantum dot phosphors expanding color gamut (NTSC >100%)
Smart lighting systems with IoT connectivity (Zigbee, Bluetooth Mesh)
Advanced thermal materials (graphene MCPCBs)
Regulatory shifts toward higher minimum efficacy standards (DOE 2023: 120 lm/W)