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

Image Part Number Description / PDF Quantity Rfq
LTJ-811C

LTJ-811C

Lite-On, Inc.

LED CBI 0.8" RED 12-DIP

0

LTL-4232NHBP

LTL-4232NHBP

Lite-On, Inc.

LED CBI 3MM GREEN GREEN TRANSP

0

LTL-816AE

LTL-816AE

Lite-On, Inc.

LED 5MM 3.2MM AMB TRANSP TH

0

LTL-4231NH107

LTL-4231NH107

Lite-On, Inc.

LED CBI 3MM GREEN GREEN DIFF

0

LTL-4221NH117

LTL-4221NH117

Lite-On, Inc.

LED CBI 3MM HI EFF RED RED DIFF

0

LTL102SFKH006B

LTL102SFKH006B

Lite-On, Inc.

LED CBI 5MM ORANGE TH

0

LTL42NJGTH125

LTL42NJGTH125

Lite-On, Inc.

LED CBI 3MM GREEN TH

0

LTL-6APHR

LTL-6APHR

Lite-On, Inc.

LED LAMP THRU-HOLE

0

LTL-42M7NMHDP1

LTL-42M7NMHDP1

Lite-On, Inc.

LED CBI 3MM 2-LEVEL X,YLW

0

LTL-42MHNMHLP

LTL-42MHNMHLP

Lite-On, Inc.

LED CBI 3MM 4-LEVEL X 2

0

LTL-2600HR

LTL-2600HR

Lite-On, Inc.

LED LIGHT BAR RECT 1X2 HE RED

0

LTL-14CHJHBP

LTL-14CHJHBP

Lite-On, Inc.

LED CBI 3MM RED/ORN-GRN WHT DIFF

0

LTL-42D1NMHLP

LTL-42D1NMHLP

Lite-On, Inc.

LED CBI 3MM 4X2 YELLOW/GREEN

0

LTL-4238C

LTL-4238C

Lite-On, Inc.

LED CBI 5MM GREEN CLEAR

0

LTL-42MKNHKP

LTL-42MKNHKP

Lite-On, Inc.

LED CBI 3MM 3-LEVEL G,G,A

0

LTL-42MFNH51

LTL-42MFNH51

Lite-On, Inc.

LED CBI 3MM 4-LEVEL YW/GN

0

LTA-1801M-01

LTA-1801M-01

Lite-On, Inc.

LED LIGHT BAR ARRAY

0

LTL-403G1HB

LTL-403G1HB

Lite-On, Inc.

LED CBI 3MM 2X4MM GREEN TH

0

LTL-2300HR-02T

LTL-2300HR-02T

Lite-On, Inc.

LED LAMP THRU-HOLE

0

LTL-553-11P3

LTL-553-11P3

Lite-On, Inc.

LED 5MM YELLOW TH

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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