LED Indication - Discrete

Part Number	Description / PDF	Quantity
NTE3181 NTE Electronics, Inc.	GRN FACE RECTANGULAR LEDS	310
NTE3130 NTE Electronics, Inc.	LED-FLASHING YELLOW	357
NTE30111 NTE Electronics, Inc.	LED-RED/BLUE 3MM 2 LEAD	149
NTE3143 NTE Electronics, Inc.	LED-3MM ORANGE	27404
NTE30043 NTE Electronics, Inc.	LED-5MM BLUE	754
NTE30108 NTE Electronics, Inc.	LED-RED/YEL_GRN 5MM 3LEAD	3853
NTE30003 NTE Electronics, Inc.	LED-SMD 0805 SUPER GREEN	1355
NTE3131 NTE Electronics, Inc.	LED-FLASHING GREEN	1116
NTE30036 NTE Electronics, Inc.	LED-3MM BLUE	6914
NTE3137 NTE Electronics, Inc.	LED-MINATURE SUPER RED	484
NTE30079 NTE Electronics, Inc.	LED-SMD 1206 SUPER WHITE	1501
NTE30157-10 NTE Electronics, Inc.	LED 10MM RGB COMMON ANODE 10PCS	32
NTE30143 NTE Electronics, Inc.	LED-3MM WHITE CLEAR	2009
NTE3145 NTE Electronics, Inc.	LED-5MM YELLOW/GREEN	1564
NTE30091 NTE Electronics, Inc.	LED-SMD SOT-23 RED/GREEN	1949
NTE30055 NTE Electronics, Inc.	LED-8MM ORANGE	1655
NTE3135 NTE Electronics, Inc.	LED-MINIATURE ORANGE	1846
NTE30135 NTE Electronics, Inc.	LED-5MM SUPER YELLOWGREEN	7672
NTE30141-EW NTE Electronics, Inc.	LED-3MM GREEN W/220OHM 1/8 RESIS	56
NTE30057 NTE Electronics, Inc.	LED-8MM DEEP-RED	370

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

Type	Functional Characteristics	Application Examples
Visible LEDs	Emits light in visible spectrum (400-700nm), available in multiple colors	Indicator lamps, display backlighting, decorative lighting
Infrared LEDs	Emits 700nm-1mm wavelength radiation, invisible to human eye	Remote controls, security sensors, night vision systems
High-Brightness LEDs	Enhanced luminous intensity (>1000mcd) with advanced packaging	Automotive lighting, outdoor displays, emergency signage
UV LEDs	Ultraviolet 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

Parameter	Significance	Typical Range
Wavelength	Determines light color and application suitability	375nm-940nm
Luminous Intensity	Measures brightness output (mcd)	50-10,000mcd
Forward Current	Operating current rating	20-150mA
Forward Voltage	Electrical potential drop	1.8-3.6V
Viewing Angle	Light emission spread measurement	5 -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

Manufacturer	Product Series	Key Features
Cree Inc.	XLamp XP-G3	High brightness (3200mcd), 120 viewing angle
OSRAM Opto	OSTAR Projection	High-power LED for automotive lighting
Nichia Corp.	NSHU5991	UV LED (365nm) for curing applications
Everlight Electronics	LTST-C19HE8WT	Tri-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