LED Lighting

LED Lighting - White

Part Number	Description / PDF	Quantity
SPMWH1229AD5SGWMSA Samsung Semiconductor	LED 2700K 80CRI SMD	35600
SPHWH2L3D30ED4TPJ3 Samsung Semiconductor	LED LH351B NEU WHITE 4000K 2SMD	0
SPMWH1228FD5WAWMS3 Samsung Semiconductor	LED LM281B WARM WHT 2700K 2SMD	6425
SPMWH1228FD5WAR0S4 Samsung Semiconductor	LED 5000K 80CRI SMD	47683
SPMWH1228FD7WAQMSA Samsung Semiconductor	LED LM281B+ COOL WHT 5700K SMD	0
SPMWH1228FD7WAVKSA Samsung Semiconductor	LED LM281B+ WARM WHT 3000K SMD	0
SPMWH1228FD7WATUVG Samsung Semiconductor	LED	79998
SCP8UT78HPL1ULS06E Samsung Semiconductor	LED LM101A WARM WHT 3500K 2SMD	22930
SPHWHTL3DA0CF4QTW6 Samsung Semiconductor	LED LH351D WHITE COOL 5700K 1414	13
SPHWH2L3D30CD4UPK3 Samsung Semiconductor	LED LH351B WARM WHITE 3500K SMD	0
SPMWH1221FD5GBV0SB Samsung Semiconductor	LED 3000K 80CRI SMD	39900
SPMWHD32AMD5XAV0S0 Samsung Semiconductor	LED	2436
SPMWHT541MP7WARNS0 Samsung Semiconductor	LED LM561B PLUS COOL WHT 5000K	0
SPMWHT541ML5XAPKS0 Samsung Semiconductor	LED WHITE 6500K 80CRI 4SMD	30000
SPMWH1229AD7SGWMSA Samsung Semiconductor	LED 2700K 90CRI SMD	39594
SPMWH1229AD5SGP0SA Samsung Semiconductor	LED 6500K 80CRI SMD	0
SPMWH1228FD7WAWKS3 Samsung Semiconductor	LED LM281B WARM WHT 2700K 2SMD	0
SPMWHT541MP7WATMS0 Samsung Semiconductor	LED 4000K 90CRI SMD	155897
SPMWH1228FD5WARMS2 Samsung Semiconductor	LED 5000K 80CRI SMD	0
SPMWH1228FD7WAQKSG Samsung Semiconductor	LED LM281B+	0

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)