LED Lighting

LED Lighting - White

Part Number	Description / PDF	Quantity
SPMWH1221FD5GBWKSA Samsung Semiconductor	LED 2700K 80CRI SMD	0
SPMWHT327FD5GBU0S2 Samsung Semiconductor	LED WHITE 3500K 80CRI SMD	0
SPMWH1228FD5WATKSG Samsung Semiconductor	LED LM281B+	0
SPHWH2L3D30ED4W0G3 Samsung Semiconductor	LED LH351B WARM WHITE 2700K 2SMD	0
SPMWHT327FD5GBRMS3 Samsung Semiconductor	LED WHITE 5000K 80CRI SMD	29427
SCP8TT78HPL1TLS06E Samsung Semiconductor	LED LM101A NEUT WHT 4000K 2SMD	8618
SPMWHT541MD5WAPMSC Samsung Semiconductor	LED COOL WHITE 6500K 80CRI 4SMD	0
SPMWH1228FD7WAPMSG Samsung Semiconductor	LED LM281B+	0
SPMWH1228FD5WATMSE Samsung Semiconductor	LED LM281B+ NEUT WHT 4000K SMD	0
SPMWHT541MD5WAPMS3 Samsung Semiconductor	LED COOL WHITE 6500K 80CRI 4SMD	0
SPMWH1228FD5WAPKSE Samsung Semiconductor	LED LM281B+ COOL WHT 6500K SMD	0
SPMWHT541MP7WAQNS0 Samsung Semiconductor	LED LM561B PLUS COOL WHT 5700K	0
SPMWHD32AMD5XAT3S0 Samsung Semiconductor	LED MID PWR LM301B 3MMX3MM	45765
SPMWH1228FD7WATMSC Samsung Semiconductor	LED LM281B+ NEUT WHT 4000K SMD	0
SPMWHD32AMD5XAQ0S0 Samsung Semiconductor	LED MID PWR LM301B 3MMX3MM	0
SPMWH3326MP7WAV3S0 Samsung Semiconductor	LED WHITE 3000K 90CRI 3030	62987
SPHWH2L3D30ED4T0G3 Samsung Semiconductor	LED LH351B NEU WHITE 4000K 2SMD	880
SPMWH1229AD7SGUMSB Samsung Semiconductor	LED 3500K 90CRI SMD	4000
SPMWHT541MP5WAQMS4 Samsung Semiconductor	LED WHITE 5700K 80CRI 4SMD	0
SPMWHT541MD5WAUMSC Samsung Semiconductor	LED WARM WHITE 3500K 80CRI 4SMD	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)