LED Lighting

LED Lighting - White

Part Number	Description / PDF	Quantity
XHP35B-H0-0000-0D0UB20E5 Cree	LED XLAMP XHP35B NEU WHT 4000K	0
MX6AWT-A1-R250-0009B3 Cree	LED XLAMP 2SMD	0
XMLAWT-00-0000-000HT20Z7 Cree	LED XLAMP WARM WHITE 3000K 2SMD	0
XPGDWT-B1-0000-00HE4 Cree	LED XLAMP XPG3 NEUT WHT SMD	0
MCE4WT-A2-0000-000JA5 Cree	LED XLAMP WARM WHITE 3750K 8SMD	0
XRCWHT-L1-R250-007E7 Cree	LED XLAMP WARM WHITE 3000K 2SMD	0
MXA9-PW30-H001 Philips (LUMILEDS)	LED LUXEON WARM WHITE 3000K 2SMD	2238
XBHAWT-02-0000-000LT50E2 Cree	LED XLAMP XB-H WHITE SMD	0
LCW MVSG.EC-AZBZ-4R9T-1 OSRAM Opto Semiconductors, Inc.	LED MINITOPLED WARM WHITE 2SMD	0
XPGWHT-L1-R250-00EE7 Cree	LED XLAMP WARM WHITE 3000K 2SMD	0
MX3AWT-A1-R250-000AA7 Cree	LED XLAMP WARM WHITE 3250K 2SMD	0
MKRAWT-02-0000-0B0UD40E8 Cree	LED XLAMP WARM WHITE 2700K 2SMD	0
XHP50A-00-0000-0D0HG427G Cree	LED XLAMP XH-P50 WHITE SMD	0
SPMWH1228FD5WAVKSG Samsung Semiconductor	LED LM281B+	0
XBHAWT-00-0000-000HT30E6 Cree	LED XLAMP WARM WHITE 3500K 2SMD	0
XPEBWT-01-0000-00DF6 Cree	LED XLAMP XP-E2 WARM WHT 3750K	0
XHP35B-00-0000-0D0UC20E4 Cree	LED XLAMP XHP35B NEU WHT 4500K	0
XTEAWT-E0-0000-00000HEE6 Cree	LED XLAMP WARM WHT 3500K SMD	0
XHGAWT-00-0000-00000BXE2 Cree	LED XLAMP COOL WHITE 5700K 2SMD	0
XBHAWT-00-0000-0000T60C2 Cree	LED XLAMP XB-H WHITE SMD	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)