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

Image Part Number Description / PDF Quantity Rfq
LN03302P

LN03302P

Panasonic

LED GREEN 3-ELEMENT ARRAY

0

LN02302P

LN02302P

Panasonic

LED GREEN 2-ELEMENT ARRAY

0

LN10304P

LN10304P

Panasonic

LED GREEN DIFFUSED LEVEL METER

0

LN06402P

LN06402P

Panasonic

LED AMBER 6-ELEMENT ARRAY

0

LN03402P

LN03402P

Panasonic

LED AMBER 3-ELEMENT ARRAY

0

LN03202P

LN03202P

Panasonic

LED RED 3-ELEMENT ARRAY

0

LN02202P

LN02202P

Panasonic

LED RED 2-ELEMENT ARRAY

0

LN05201P

LN05201P

Panasonic

LED RED DIFFUSED LEVEL METER

0

LNV810105A

LNV810105A

Panasonic

LED LEVEL METER 10 SEGMENT RED

0

LNV310105A

LNV310105A

Panasonic

LED LEVEL METER 10 SEGMENT GREEN

0

LN0801WP38

LN0801WP38

Panasonic

LED GRN/ORANGE DIFFUS (WHITE)

0

LN05202P

LN05202P

Panasonic

LED RED 5-ELEMENT ARRAY

0

LN06302P

LN06302P

Panasonic

LED GREEN 6-ELEMENT ARRAY

0

LN06202P

LN06202P

Panasonic

LED RED 6-ELEMENT ARRAY

0

LN07202P

LN07202P

Panasonic

LED RED 7-ELEMENT ARRAY

0

LN05302P

LN05302P

Panasonic

LED GREEN 5-ELEMENT ARRAY

0

LN04302P

LN04302P

Panasonic

LED GREEN 4-ELEMENT ARRAY

0

LN07302P

LN07302P

Panasonic

LED GREEN 7-ELEMENT ARRAY

0

LN05402P

LN05402P

Panasonic

LED AMBER 5-ELEMENT ARRAY

0

LN04202P

LN04202P

Panasonic

LED RED 4-ELEMENT ARRAY

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

TypeFunctional FeaturesApplication Examples
IndicatorsSingle/dual-color point-source lighting for status indicationPower switches, network routers, medical device panels
ArraysMatrix configurations for alphanumeric/symbol displaySeven-segment displays, dot matrix modules
Light BarsLinear arrangements for directional lighting/brightness zonesAudio level meters, industrial control panels
Bar GraphsSegmented columns for quantitative visual representationBattery 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

ParameterDescriptionImportance
Luminous Intensity0.1-100 cd/m rangeDetermines visibility in various lighting conditions
Wavelength400-700 nm (visible spectrum)Defines color output accuracy
Forward Current2-30 mA typicalImpacts brightness and longevity
Viewing Angle5-120 depending on lens designDictates light distribution pattern
MTBF50,000-100,000 hoursSystem 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

ManufacturerProduct SeriesKey Features
CreeXLamp XRHigh-brightness automotive indicators
OSRAMLED LineProgrammable RGB light bars
NichiaNSPWR70CSSUltra-compact bar graph displays
EverlightDLW-5xxxWaterproof 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

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