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

Part Number	Description / PDF	Quantity
5710132100F Dialight	LED CBI 2MM BI-LEVEL YW,GN DIFF	1051
5912001007F Dialight	LED PRISM 3MM RND HI EFF RED SMD	0
5530121300F Dialight	LED CBI 3MM BI-LVL GREEN/RED	0
5510801F Dialight	LED CBI 3MM DIN BLUE DIFF RA SGL	1
5922626313F Dialight	LED CBI PRISM BLVL BLUBLU TR SIL	0
5952401013NF Dialight	2MM PRISM Y 13 REEL	0
5912301013F Dialight	LED PRISM 3MM RT ANG GREEN SMT	4350
5680102311F Dialight	LED CBI 3MM 4X1 GRN,YLW,RED,RED	0
5921410302F Dialight	LED PRISM 3MM BI-COLOR SMD	0
5710133810F Dialight	LED CBI 2MM BI-LEVEL X 2 Y,Y	0
5912101013F Dialight	LED PRISM 3MM RA ALGAAS RED SMT	5707
5501207F Dialight	LED 5MM RT ANG LOW CUR YEL PCMNT	0
5913001007F Dialight	LED PRISM 3MM RA SUP RED/GRN SMT	3073
5922631313F Dialight	LED CBI PRISM BLVL BLU/YG TR SIL	0
5503010F Dialight	LED CBI 5MM RED/GRN BICOLOR	0
5913601102F Dialight	LED PRISM 3MM BI-COLOR SMD	0
5912701847F Dialight	LED SMD PRISM 3MM 590NM YLW	0
5530211200F Dialight	LED CBI 3MM BI-LVL RED/RED DIFF	54
5962926013F Dialight	596 PRISM SMD 1.6MM BILEVEL RND	0
5710123F Dialight	LED CBI 2MM BI-LEVEL GN,YW DIFF	1897

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