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

Part Number	Description / PDF	Quantity
SMF-LX240IID-TR Lumex, Inc.	LED 3MM 635NM RED DIFF RA SMD	20
SSF-LXH100MGD Lumex, Inc.	LED 5MM RA MATING LOWCUR GRNPCMT	7957
SSF-LXH104GD Lumex, Inc.	LED 5MM RA FAULT-IND GREEN PCMT	16987
SSF-LXH305USBD-TR Lumex, Inc.	LED INGAN BLUE DIFF 470NM SMD	1368
SSA-LXB10IW-GF/LP Lumex, Inc.	LED ARRAY 10X25MM 10SEG RED DIFF	562
SSF-LXH305SGD-TR Lumex, Inc.	LED ALINGAP RA GRN DIF 565NM SMD	4817
SSB-LX2300IW Lumex, Inc.	LED LT BAR 5X10MM 2CHIP RED DIFF	1778
SSF-LXH100MLID Lumex, Inc.	LED 5MM RA MATING LOWCUR REDPCMT	826
SSF-LXH100ID-01 Lumex, Inc.	LED 5MM RA RED DIFF PC MOUNT	0
SSF-LXHM250IID Lumex, Inc.	LED 5MM 2-HI MATING RED PC MOUNT	317
SSA-LXH1225ID Lumex, Inc.	LED ARRAY 2.5X5MM 12-SEG RED	0
SSB-LX2400YW Lumex, Inc.	LED LT BAR 5X10MM 2CHIP YEL DIFF	49
SSF-LXH555ID Lumex, Inc.	LED 1.8MM RA RED PC MOUNT	420
SSF-LXHM250IGIGW Lumex, Inc.	LED 5MM 2-HI MATING RED/GRN PCMT	8415
SSB-LX2500SGW Lumex, Inc.	LED LT BAR 5X10MM 2CHIP GRN DIFF	131
SSF-LXH103LGD Lumex, Inc.	LED 3MM RA FAULT-IND GREEN PCMT	6696
SSF-LXH2103YYD/4 Lumex, Inc.	LED 3MM 2-HI YELLOW/YELLOW PCMNT	4548
SSA-LXB10HW-GF/LP Lumex, Inc.	LED ARRAY 10X25MM 10SEG RED DIFF	894
SSF-LXH100MLGD Lumex, Inc.	LED 5MM RA MATING LOWCUR GRNPCMT	250
SSF-LXH4RA5SRD Lumex, Inc.	LED 5MM RELAMPABLE SUP RED PCMNT	22

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