LED Indication - Discrete

Image Part Number Description / PDF Quantity Rfq
XZCWD74F

XZCWD74F

SunLED

LED 0802 RA WHITE YLW FLUOR

0

XZM2DG67S

XZM2DG67S

SunLED

LED GREEN CLEAR 2SMD R/A

0

XZWRA25X92SCA-4

XZWRA25X92SCA-4

SunLED

LED COOL WHITE CLEAR CHIP SMD

0

XSUY36D

XSUY36D

SunLED

LED YELLOW DIFFUSED RECT T/H

0

XZCWD55F-1

XZCWD55F-1

SunLED

LED 3.2X1.6MM WHT WHT FLUOR 1206

0

XZMDK80S-2HTA

XZMDK80S-2HTA

SunLED

LED RED CLEAR 2SMD

0

XLMDK12D5V

XLMDK12D5V

SunLED

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

0

XZFWS55F-2

XZFWS55F-2

SunLED

LED 1206 REV MT WHITE YLW FLUOR

0

XLMDK11D14V

XLMDK11D14V

SunLED

LED RED DIFFUSED T-1 T/H

0

XZFBB79W

XZFBB79W

SunLED

LED BLUE CLEAR 2SMD

0

XZM2DG45SB

XZM2DG45SB

SunLED

LED GREEN CLEAR 2PLCC SMD

0

XZFWS55F-1

XZFWS55F-1

SunLED

LED 1206 WHITE YELLOW FLUOR

0

XZFBB67S

XZFBB67S

SunLED

LED BLUE CLEAR 2SMD R/A

0

XZM2FW105S

XZM2FW105S

SunLED

LED WHITE WATER CLEAR 1208

0

XBUY34D

XBUY34D

SunLED

LED YELLOW DIFFUSED T-1 T/H

0

XBUR34D

XBUR34D

SunLED

LED RED DIFFUSED T-1 T/H

0

XZFWS45S-9

XZFWS45S-9

SunLED

LED 3.2X2.8MM WHT WTR CLR 2PLCC

0

XZM2CYK45S-9

XZM2CYK45S-9

SunLED

LED YELLOW CLEAR 2PLCC SMD

0

XZUY48WA

XZUY48WA

SunLED

LED YELLOW CLEAR SOT23-3 SMD

0

XZM2CRK67S

XZM2CRK67S

SunLED

LED RED CLEAR 2SMD R/A

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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