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

Part Number	Description / PDF	Quantity
5530122010F Dialight	LED CBI 3MM BI-LVL GREEN/GREEN	0
5962326002F Dialight	596 PRISM SMD 1.6MM BILEVEL RND	0
5553007F Dialight	LED 2MM 5V VERTICAL RED PC MNT	103
5530132300F Dialight	LED CBI 3MM BI-LVL YELLOW/GREEN	253
5912101007F Dialight	LED PRISM 3MM RND ALGAAS RED SMD	1496
5710123100F Dialight	LED CBI 2MM BI-LEVEL GN,YW DIFF	0
5530112200F Dialight	LED CBI 3MM BI-LVL RED/GREEN	1095
5513407F Dialight	LED 3MM CBI RT ANGLE O/G	111
5912301107F Dialight	LED PRISM 3MM SQ GREEN SMD	2772
5555403F Dialight	LED CBI 2MM YLW 5V RES QUAD TH	0
5912404107F Dialight	LED PRISM 3MM RND LC SQ YLW SMD	0
5912201002F Dialight	LED PRISM 3MM RND HI INT GRN SMD	74
5615701100F Dialight	LED 5MM VERT SUP CLEAR YEL PCMNT	0
5553303F Dialight	LED 2MM 5V VERTICAL GREEN PC MNT	962
5611301060F Dialight	LED 5MM VERT LOW CUR GRN PC MNT	0
5512509F Dialight	LED 3MM RTANG HI EFF ORANGE PCMT	1965
5555007F Dialight	LED CBI 2MM RED 5V RES QUAD TH	0
5513102F Dialight	LED CBI 3MM YLW/GRN DIFF RA	0
5961818002F Dialight	596 PRISM SMD 1.6MM BILEVEL RND	0
5912701107F Dialight	LED PRISM 3MM SQ ALLINGAP YW SMD	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