LEDs - Circuit Board Indicators, Arrays, Light Bars, Bar Graphs

Image	Part Number	Description / PDF	Quantity	Rfq
	553-0744 Visual Communications Company, LLC	LED 3MM BI-LEVEL YLW/GRN RA PCB	0
	6202T3-5VLC Visual Communications Company, LLC	LED AMBER RIGHT ANGLE 5V LC SMD	0
	6202T1-5V Visual Communications Company, LLC	LED RED RIGHT ANGLE 5V SMD	0
	5670H5_5 Visual Communications Company, LLC	LED GREEN T1-3/4 DUAL RTANG PCB	0
	5300E15 Visual Communications Company, LLC	GREEN LED 10MA 2.1V	0
	5321F1 Visual Communications Company, LLC	LED RED T1 .45" HI RT ANG ASSY	0
	5340H1 Visual Communications Company, LLC	LED SUPER BRITE RED T1-3/4 VERT	0
	5352T5-5V Visual Communications Company, LLC	LED GREEN T-3/4 RT ANG 5V PCB	0
	5307H1 Visual Communications Company, LLC	LED RED T1-3/4 RT ANG PCB	0
	6255T5LC Visual Communications Company, LLC	LED GREEN 5.3X4.6X4.8MM SMD	0
	5694F7_7_7_7-A Visual Communications Company, LLC	LED YELLOW T1 4HIGH RT ANG	0
	5302H1-5V Visual Communications Company, LLC	LED RED T1-3/4 RT ANG 5V PCB	0
	5655F5 Visual Communications Company, LLC	LED GREEN T1 RIGHT ANGLE	0
	6255T3-5V Visual Communications Company, LLC	LED AMBR 5.3X4.6X4.8MM W/RES SMD	0
	6255T1 Visual Communications Company, LLC	LED RED 5.3X4.6X4.8MM SMD	0
	6255T1LC Visual Communications Company, LLC	LED RED 5.3X4.6X4.8MM SMD	0
	5636D1 Visual Communications Company, LLC	LED RED RECTANGLE RIGHT ANGLE	0
	6255T5-5VLC Visual Communications Company, LLC	LED GRN 5.3X4.6X4.8MM W/RES SMD	0
	5340H7LC Visual Communications Company, LLC	LED SUPER BRITE YEL T1-3/4 VERT	0
	5308H7 Visual Communications Company, LLC	LED YELLOW T1-3/4 RT ANG PCB	0

LEDs - Circuit Board Indicators, Arrays, Light Bars, Bar Graphs

1. Overview

Light Emitting Diodes (LEDs) are semiconductor devices that convert electrical energy into light through electroluminescence. This product category includes indicators, arrays, light bars, and bar graphs designed for circuit board integration. LEDs serve critical roles in modern electronics for status indication, data visualization, and illumination. Their advantages include low power consumption, long lifespan, and compact form factors.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Indicators	Single/dual-color point-source lighting for status indication	Power switches, network routers, medical device panels
Arrays	Matrix configurations for alphanumeric/symbol display	Seven-segment displays, dot matrix modules
Light Bars	Linear arrangements for directional lighting/brightness zones	Audio level meters, industrial control panels
Bar Graphs	Segmented columns for quantitative visual representation	Battery level indicators, sensor data visualization

3. Structure and Components

Typical LED components include:

Die: Gallium Nitride (GaN) or Indium Gallium Aluminum Phosphide (InGaAlP) semiconductor chips
Substrate: FR4 or metal-core PCB for thermal management
Encapsulation: Epoxy resin with diffused/optical lens structures
Driver Circuitry: Current-limiting resistors or PWM control ICs

4. Key Technical Specifications

Parameter	Description	Importance
Luminous Intensity	0.1-100 cd/m range	Determines visibility in various lighting conditions
Wavelength	400-700 nm (visible spectrum)	Defines color output accuracy
Forward Current	2-30 mA typical	Impacts brightness and longevity
Viewing Angle	5-120 depending on lens design	Dictates light distribution pattern
MTBF	50,000-100,000 hours	System reliability prediction

5. Application Fields

Key industries include:

Consumer Electronics: Smartphones, laptops, home appliances
Industrial Automation: PLC status indicators, HMI panels
Automotive: Dashboard lighting, warning indicators
Medical Equipment: Diagnostic status visualization

6. Leading Manufacturers and Products

Manufacturer	Product Series	Key Features
Cree	XLamp XR	High-brightness automotive indicators
OSRAM	LED Line	Programmable RGB light bars
Nichia	NSPWR70CSS	Ultra-compact bar graph displays
Everlight	DLW-5xxx	Waterproof array modules

7. Selection Recommendations

Key considerations:

Environmental Conditions: Temperature (-40 to +85 C operational range)
Optical Requirements: Color consistency (CIE 1931 standard)
Electrical Compatibility: Driver circuit matching
Form Factor: 0402-5050 package size constraints
Cost Optimization: Trade-off between performance and budget

Industry Trend Analysis

Current trends show:

Micronization: Development of 0201 package formats
Smart Integration: Embedded ICs for addressable lighting
Energy Efficiency: Sub-1mA operational current devices
Automotive Growth: HUD and LiDAR indicator applications
Medical Advancements: UV/IR spectrum specialized indicators