LED Indication - Discrete

Image Part Number Description / PDF Quantity Rfq
WP113EDT

WP113EDT

Kingbright

LED ORANGE DIFF RECT 2MMX5MM T/H

0

WP1503SRC/D

WP1503SRC/D

Kingbright

LED RED CLEAR T-1 3/4 T/H

0

APTL3216SYCK01

APTL3216SYCK01

Kingbright

LED 3.2X1.6MM 590NM YLW REV 2SMD

0

APED3528VBC/D

APED3528VBC/D

Kingbright

LED BLUE CLEAR CHIP SMD

0

APTL3216SECK-01

APTL3216SECK-01

Kingbright

LED SMD

1053

APPA3010SECK

APPA3010SECK

Kingbright

LED

0

AA2214VRBXS/A-SC-AMT

AA2214VRBXS/A-SC-AMT

Kingbright

LED BLUE CLEAR SMD

0

WP7104YD

WP7104YD

Kingbright

LED YELLOW DIFFUSED T-1 T/H

0

WP7104LGD

WP7104LGD

Kingbright

LED GREEN DIFFUSED T-1 T/H

0

APG1608VGAZC-RV

APG1608VGAZC-RV

Kingbright

LED GREEN CLEAR CHIP SMD

0

AA3022YC-4.5SF

AA3022YC-4.5SF

Kingbright

LED YELLOW CLEAR SMD

0

AA3528AEC

AA3528AEC

Kingbright

LED RED CLEAR SMD

0

WP710A10WG1C

WP710A10WG1C

Kingbright

LED GREEN CLEAR T-1 T/H

0

APBVA3010EYC

APBVA3010EYC

Kingbright

LED RED/YLW CLEAR CHIP SMD R/A

0

AA3528ASECK

AA3528ASECK

Kingbright

LED ORANGE CLEAR SMD

0

AA3020ASECK

AA3020ASECK

Kingbright

LED ORANGE CLEAR SMD

0

WP7104PBC/Z

WP7104PBC/Z

Kingbright

LED BLUE CLEAR T-1 T/H

0

AA3020AQBC/D

AA3020AQBC/D

Kingbright

LED BLUE CLEAR SMD

0

AA4040ZGC

AA4040ZGC

Kingbright

LED GREEN CLEAR SMD R/A

0

AA3020AEC

AA3020AEC

Kingbright

LED RED CLEAR SMD

0

LED Indication - Discrete

1. Overview

Discrete Light Emitting Diodes (LEDs) are single-chip optoelectronic devices that convert electrical energy into light through electroluminescence. This product category forms the foundation of modern indication systems, offering advantages including low power consumption, long lifespan, and high reliability. Their importance spans across consumer electronics, industrial equipment, automotive systems, and communication infrastructure.

2. Major Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Visible LEDsEmits light in visible spectrum (400-700nm), available in multiple colorsIndicator lamps, display backlighting, decorative lighting
Infrared LEDsEmits 700nm-1mm wavelength radiation, invisible to human eyeRemote controls, security sensors, night vision systems
High-Brightness LEDsEnhanced luminous intensity (>1000mcd) with advanced packagingAutomotive lighting, outdoor displays, emergency signage
UV LEDsUltraviolet spectrum emission (280-400nm)Sterilization equipment, counterfeit detection, curing systems

3. Structure and Composition

Typical discrete LED construction includes:

  • Die: Semiconductor chip (GaN/InGaN for blue/green, AlGaInP for red)
  • Encapsulation: Epoxy or silicone lens for light extraction and protection
  • Lead Frame: Copper or iron alloy for electrical connection and heat dissipation
  • Phosphor Coating: Used in white LEDs for wavelength conversion
  • Reflective Cup: Optimizes light directionality

4. Key Technical Parameters

ParameterSignificanceTypical Range
WavelengthDetermines light color and application suitability375nm-940nm
Luminous IntensityMeasures brightness output (mcd)50-10,000mcd
Forward CurrentOperating current rating20-150mA
Forward VoltageElectrical potential drop1.8-3.6V
Viewing AngleLight emission spread measurement5 -120

5. Application Fields

Primary application sectors include:

  • Consumer Electronics: Mobile phone indicators, keyboard backlighting
  • Automotive: Dashboard indicators, brake light systems
  • Industrial: Machine status indicators, safety signage
  • Medical: Diagnostic equipment indicators, phototherapy devices
  • Telecommunications: Network equipment status lights

6. Leading Manufacturers and Products

ManufacturerProduct SeriesKey Features
Cree Inc.XLamp XP-G3High brightness (3200mcd), 120 viewing angle
OSRAM OptoOSTAR ProjectionHigh-power LED for automotive lighting
Nichia Corp.NSHU5991UV LED (365nm) for curing applications
Everlight ElectronicsLTST-C19HE8WTTri-color LED for RGB indication

7. Selection Recommendations

Key consideration factors:

  • Spectral Requirements: Match wavelength to application needs
  • Environmental Conditions: Temperature range (-40 C to +85 C typical)
  • Power Constraints: Select appropriate current/voltage ratings
  • Optical Design: Consider lens type and viewing angle
  • Reliability: Check MTTF (Mean Time to Failure) specifications

Industry Development Trends

Current technology directions include:

  • Miniaturization: Development of micro-LED ( LED) with dimensions <50 m
  • Efficiency Improvement: Targeting >300lm/W efficacy for visible LEDs
  • Smart Integration: Incorporating driver ICs and sensors in LED packages
  • Material Innovation: GaN-on-silicon substrates for cost reduction
  • Regulatory Compliance: RoHS/REACH compliant packaging materials
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