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

Part Number	Description / PDF	Quantity
SSF-LXH100MHGW Lumex, Inc.	LED 5MM RA MATING RED/GRN BICLR	5661
SSF-LXH303GD Lumex, Inc.	LED T-3MM 565NM GREEN DIFF PCB	17015
SSF-LXH100GD-5V Lumex, Inc.	LED 5MM RA 5V GREEN DIFF PC MNT	1450
SSF-LXH2103LIID/4 Lumex, Inc.	LED 3MM 2-HI RED/RED LOW I PCMNT	1422
SSF-LXH100MYD Lumex, Inc.	LED 5MM RA MATING YELLOW PC MNT	484
SSF-LXH100YD Lumex, Inc.	LED 5MM RA FAULT-IND YEL PC MNT	1136
SSA-LXB525ID Lumex, Inc.	LED ARRAY 2X5MM 5-SEG RED	51
SSF-LXH305SRD-TR Lumex, Inc.	LED 3MM RA SUPER RED DIFF SMD	6298
SSF-LXH100GD Lumex, Inc.	LED 5MM RA GREEN DIFF PC MOUNT	16274
SSF-LXH100LID-01 Lumex, Inc.	LED 5MM RA LOWCUR RED PC MOUNT	377
SSB-LX2965IGW Lumex, Inc.	LED LT BAR SQ RED/GRN DIFF BICLR	747
SSF-LXH400GD Lumex, Inc.	LED 5MM 4-WIDE GREEN PC MOUNT	0
SSA-LXH1225GD Lumex, Inc.	LED ARRAY 2.5X5MM 12-SEG GREEN	856
SSB-LXH100SRW Lumex, Inc.	LED LT BAR 8-CHIP SUPER RED DIFF	513
SSF-LXH400HGW Lumex, Inc.	LED 5MM 4-WIDE RED/GREEN PC MNT	1767
SSF-LXH103YD Lumex, Inc.	LED 3MM RA FAULT-IND YEL PC MNT	34870
SSF-LXH4RAID Lumex, Inc.	LED 3MM RELAMPABLE RED PC MOUNT	1166
SSB-LX2450YW Lumex, Inc.	LED LT BAR 5X20MM 4CHIP YEL DIFF	0
SSF-LXH2100GD Lumex, Inc.	LED 5MM RA 2-WIDE GREEN PC MNT	9
SSA-LXH1025YD Lumex, Inc.	LED ARRAY 2.5X5MM 10-SEG YELLOW	336

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