LED Lighting

LED Lighting - White

Part Number	Description / PDF	Quantity
SPMWHD32AMD5XAUKS0 Samsung Semiconductor	LED MID PWR LM301B 3MMX3MM	0
SPMWHD32AMD5XAR3S0 Samsung Semiconductor	LED MID PWR LM301B 3MMX3MM	2009
SPHWH2L3D30CD4VPK3 Samsung Semiconductor	LED WHITE 3000K 70CRI 3535 SMD	0
SPMWH3326MP3WAUYS0 Samsung Semiconductor	LED WHITE 3500K 70CRI 3030	0
SPHWH1L3D30ED4U0G3 Samsung Semiconductor	LED LH351B WARM WHITE 3500K 2SMD	940
SPHWH2L3D30ED4V0H3 Samsung Semiconductor	LED LH351B WARM WHITE 3000K 2SMD	0
SPMWHT327FD5GBT0S2 Samsung Semiconductor	LED WHITE 4000K 80CRI SMD	0
SPMWHT541MP5WAP0SD Samsung Semiconductor	LED WHITE 6500K 80CRI 4SMD	0
SPMWHT541MP5WAW0S5 Samsung Semiconductor	LED LM561B PLUS WARM WHT 2700K	0
SPMWH1229AD7SGT0SA Samsung Semiconductor	LED 4000K 90CRI SMD	11555
SPHWH2L3D30ED4TPK3 Samsung Semiconductor	LED LH351B NEU WHITE 4000K SMD	25926
SPHWHTL3D303E6PTK3 Samsung Semiconductor	LED LH351A COOL WHITE 6500K 2SMD	247
SPMWH1228FD5WAUKS4 Samsung Semiconductor	LED LM281B WARM WHT 3500K 2SMD	0
SPMWHT541MP5WATRS5 Samsung Semiconductor	LED 4000K 80CRI SMD	0
SPMWHD32AMD5XAQ3S0 Samsung Semiconductor	LED MID PWR LM301B 3MMX3MM	0
SPMWH1221FD7GBT0SB Samsung Semiconductor	LED 4000K 90CRI SMD	39647
SPMWH1228FD7WAUKS4 Samsung Semiconductor	LED LM281B WARM WHT 3500K 2SMD	0
SPMWH3326MP5WATYS0 Samsung Semiconductor	LED WHITE 4000K 80CRI 3030	0
SPMWHT327FD5GBTMS3 Samsung Semiconductor	LED WHITE 4000K 80CRI SMD	62310
SPMWHT328FD5WAUKS0 Samsung Semiconductor	LED 3X3 3500K 80CRI 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)