LED Indication - Discrete

Part Number	Description / PDF	Quantity
HLMP-Y502-F0000 Broadcom	LED GREEN CLEAR T-1 T/H	541
HSMF-C162 Broadcom	LED AMBER/RED DIFFUSED 0603 SMD	11583
HSMA-C240 Broadcom	CHIP,R/ANGLE MT,ALINGAP, AMB	20000
HSM9-C192 Broadcom	CHIPTOP MTALGAAS/GAAS940NM	12000
ASMT-YTD2-0BB02 Broadcom	LED RGB CLEAR 6PLCC SMD	58059
HSMF-C186 Broadcom	CHIP,BICLR,BLUE/RED	8000
HLMP-3451-D0000 Broadcom	LED YELLOW DIFFUSED T-1 3/4 T/H	14665
HSMD-C191 Broadcom	LED ORANGE DIFFUSED CHIP SMD	0
HSMC-C190 Broadcom	LED RED DIFFUSED CHIP SMD	187979
ALMD-EL1E-Z2002 Broadcom	LED AMBER SMT ROUND ALINGAP 15DE	25207
HSMF-A341-A00J1 Broadcom	LED RGB CLEAR 4PLCC SMD	11285
ASMB-LTC3-0D335 Broadcom	2121 PLCC4 TRICOLOR	27985
HLMP-D101 Broadcom	LED RED DIFFUSED T-1 3/4 T/H	15113
HSMG-C120 Broadcom	LED GREEN CLEAR 0603 R/A SMD	14271
HSMH-A100-L00J1 Broadcom	LED RED CLEAR 2PLCC SMD	55572
HLMP-6000 Broadcom	LED RED DIFF AXIAL T/H AXIAL	11810
HLMP-3962 Broadcom	LED GREEN DIFFUSED T-1 3/4 T/H	25148
HSMW-C280 Broadcom	LED WHITE DIFFUSED 0402 SMD	5250
HLMP-3301-D0002 Broadcom	LED RED DIFFUSED T-1 3/4 T/H	35015
HLMP-6600 Broadcom	LED RED DIFF AXIAL T/H AXIAL	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

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