LED Lighting

LED Lighting - White

Part Number	Description / PDF	Quantity
SPMWHT328FD5WARKS0 Samsung Semiconductor	LED 3X3 5000K 80CRI SMD	0
SPMWH1221FD5GBRKSA Samsung Semiconductor	LED 5000K 80CRI SMD	0
SPMWH1228FD5WAVUVJ Samsung Semiconductor	LED	51800
SPMWH3326MP7WARYS0 Samsung Semiconductor	LED WHITE 5000K 90CRI 3030	0
SPMWH1228FD5WAQUVJ Samsung Semiconductor	LED	31700
SPMWH1228FD5WATUSE Samsung Semiconductor	LED	0
SPMWHT541MP5WATMS4 Samsung Semiconductor	LED WHITE 4000K 80CRI 4SMD	50993
SPMWHT541MD5WARMSC Samsung Semiconductor	LED COOL WHITE 5000K 80CRI 4SMD	0
SPMWHT541MD5WAPMS2 Samsung Semiconductor	LED COOL WHITE 6500K 4SMD	0
SPMWHT541MP7WAUMS0 Samsung Semiconductor	LED LM561B PLUS WM WHT 3500K SMD	4687
SPMWH1221FD5GBPMSB Samsung Semiconductor	LED 6500K 80CRI SMD	0
SPHWH2L3D30CD4T0J3 Samsung Semiconductor	LED WHITE 4000K 70CRI 3535 SMD	0
SPMWHD32AMD3XAR0S0 Samsung Semiconductor	LED MID PWR LM301B 3MMX3MM	49268
SPMWH1228FD7WARMSG Samsung Semiconductor	LED LM281B+	0
SPMWHT327FD5GBUMS4 Samsung Semiconductor	LED WHITE 3500K 80CRI SMD	0
SPMWHT541MD5WAVKS2 Samsung Semiconductor	LED WARM WHITE 3000K 80CRI 4SMD	0
SPMWH1228MD5WAWUVK Samsung Semiconductor	LED	39165
SPHWH2L3D30CD4QTN3 Samsung Semiconductor	LED LH351B COOL WHITE 5700K SMD	10961
SPHWHTL3D20EE3W0F3 Samsung Semiconductor	LED LH351Z WARM WHITE 2700K 2SMD	247
SPMWH1228FD5WARUVG Samsung Semiconductor	LED	11483

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)