LED Indication - Discrete

Image Part Number Description / PDF Quantity Rfq
WP169XID

WP169XID

Kingbright

LED RED DIFFUSED RECT T/H

0

WP813SRC/J4

WP813SRC/J4

Kingbright

LED RED CLEAR 10MM T/H

0

AM2520SYCK09

AM2520SYCK09

Kingbright

LED YELLOW CLEAR SMD

0

AA3528EC

AA3528EC

Kingbright

LED RED CLEAR 2SMD

0

AA3528SES/J3-AMT

AA3528SES/J3-AMT

Kingbright

LED RED CLEAR 2PLCC SMD

0

WP513HDT

WP513HDT

Kingbright

LED RED DIFF RECT 2.5MMX5MM T/H

0

APED3528SURCK-F01

APED3528SURCK-F01

Kingbright

LED RED CLEAR CHIP SMD

0

WP914IT

WP914IT

Kingbright

LED RED CLEAR T/H

0

APTL3216QBC/D-01

APTL3216QBC/D-01

Kingbright

LED SMD

5734

WP914ET

WP914ET

Kingbright

LED ORANGE CLEAR T/H

0

L53SGT-W203-02

L53SGT-W203-02

Kingbright

LED GREEN CBI RECT FLAT RADIAL

0

WP483HDT

WP483HDT

Kingbright

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

0

APED3528SYCK-F01

APED3528SYCK-F01

Kingbright

LED YELLOW CLEAR CHIP SMD

0

APED3528CGCK-F01

APED3528CGCK-F01

Kingbright

LED GREEN CLEAR SMD

0

WP36BYD

WP36BYD

Kingbright

LED YELLOW DIFFUSED T-1 T/H

0

WP383HDT

WP383HDT

Kingbright

LED RED DIFF RECT 2.5MMX5MM T/H

0

AA3528ZGCKT09

AA3528ZGCKT09

Kingbright

LED SMD

12410

WP63IT

WP63IT

Kingbright

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

0

APK3216-PZ42

APK3216-PZ42

Kingbright

LED 3.2X1.6MM 525NM GRN CLR SMD

2000

WP793SRC/J4

WP793SRC/J4

Kingbright

LED RED CLEAR 8MM ROUND T/H

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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