LED Indication - Discrete

Part Number	Description / PDF	Quantity
NTE30018 NTE Electronics, Inc.	LED-SMD 0603 SUPER ORANGE	2415
NTE30088 NTE Electronics, Inc.	LED-SMD SOT-23 SUPER RED	2204
NTE3015 NTE Electronics, Inc.	LED 5MM GREEN JEWEL	242
NTE30092 NTE Electronics, Inc.	LED-SMD SOT-23 YELL/GREEN	2023
NTE3134 NTE Electronics, Inc.	LED-MINIATURE SUPER YEL	982
NTE3165 NTE Electronics, Inc.	LED-RECTANGULAR IND.YELLO	225
NTE30110 NTE Electronics, Inc.	LED-RED/YEL_GRN 3MM 2LEAD	2395
NTE30138 NTE Electronics, Inc.	LED-5MM SUPER BRIGHT BLUE	6550
NTE30084 NTE Electronics, Inc.	LED-SMD RT ANG SUP ORANGE	2261
NTE30031 NTE Electronics, Inc.	LED-3MM PURE GREEN	5984
NTE30124 NTE Electronics, Inc.	LED-10MM PURPLE	1392
NTE3020 NTE Electronics, Inc.	LED-RED T-1 3/4	967
NTE30028 NTE Electronics, Inc.	LED-SMD PLCC SUPER WHITE	555
NTE3023 NTE Electronics, Inc.	LED-ORG T-1 3/4	1022
NTE30158 NTE Electronics, Inc.	LED 10MM RGB COMMON ANODE	1428
NTE30102 NTE Electronics, Inc.	LED-RED/YEL_GRN 3MM 3LEAD	2811
NTE3025 NTE Electronics, Inc.	LED-RED T-1 3/4	380
NTE30180-R NTE Electronics, Inc.	LED 3W RED STAR PCB	1456
NTE3014A NTE Electronics, Inc.	LED-GREEN	140
NTE3164 NTE Electronics, Inc.	LED-RECTANGULAR IND.GREEN	572

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