Editorial Technical Reference

LED Array

This page explains how LED Array is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A structured arrangement of multiple LED chips mounted on a substrate to form a lighting module.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for LED Array

Definition
An LED Array is a core component of LED Illumination Systems, consisting of multiple individual LED chips arranged in specific patterns (linear, matrix, circular, etc.) on a common substrate. It serves as the primary light-emitting element that determines the system's luminous output, beam pattern, and color characteristics. Within the LED Illumination System, the array interfaces with drivers, heat sinks, and optical elements to create controlled, efficient illumination. The array's design allows for collective operation, enabling higher luminous flux, uniform light distribution, and thermal management through a shared substrate. Electrical connections (series/parallel) determine voltage/current requirements and failure modes. Typical parameters include input voltage of 12–24 V DC, power consumption of 5–50 W, luminous flux of 500–5000 lm (tested per IES LM-79), color temperature of 2700–6500 K, CRI of 80–95 (per CIE 13.3), operating temperature of -40–85 °C, ingress protection of IP54–IP65 (per IEC 60529), substrate material of aluminum, dimensions of 50×50–300×300 mm, weight of 50–500 g, and lifetime of 30000–50000 hours (L70 per IES LM-80). Materials include gallium arsenide (GaAs) semiconductor chips, aluminum or ceramic substrate, gold/copper bonding wires, phosphor coating (for white LEDs), and encapsulation epoxy/silicone. These values are reference ranges; verify model-specific specifications with the legal manufacturer or supplier before procurement. The array is a component, not a standalone luminaire, and requires integration with appropriate drivers and thermal management.
Working Principle
LED chips in the array convert electrical energy into light through electroluminescence when forward-biased. The arrangement allows for collective operation, enabling higher luminous flux, uniform light distribution, and thermal management through shared substrate. Electrical connections (series/parallel) determine voltage/current requirements and failure modes. The substrate provides mechanical support and heat spreading, while bonding wires connect chips electrically. Phosphor coating may convert blue light to white, and encapsulation protects against environmental factors.
Common Materials
Gallium Arsenide (GaAs) semiconductor chips, Aluminum or ceramic substrate, Gold/copper bonding wires, Phosphor coating (for white LEDs), Encapsulation epoxy/silicone
Technical Parameters
ParameterTypical rangeNotes & selection driver
Input Voltage12–24 V DCTypical for LED arrays; outside range may require driver adjustment.
Power Consumption5–50 WDepends on number of LEDs and drive current.
Luminous Flux500–5000 lmTotal light output; higher for larger arrays.IES LM-79
Color Temperature2700–6500 KWarm to cool white options.
CRI80–95Higher CRI for accurate color rendering.CIE 13.3
Operating Temperature-40–85 °CStorage and operation range; thermal management required.
Ingress ProtectionIP54–IP65Dust and water resistance for outdoor use.IEC 60529
Substrate MaterialAlAluminum for heat dissipation; other options available.
Dimensions50×50–300×300 mmFootprint varies with LED count and power.
Weight50–500 gDepends on substrate size and heatsink.
Lifetime30000–50000 hL70 lumen maintenance at rated current.IES LM-80

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • LED chip/die Part
    Semiconductor element that emits light when electrically excited
    Material: Gallium-based semiconductor (GaAs, GaN, etc.)
  • Substrate Part
    Base material providing mechanical support, electrical connections, and thermal dissipation
    Material: Aluminum, ceramic (Al2O3, AlN), or FR4 PCB
  • Bonding wires Part
    Create electrical connections between LED chips and substrate circuits
    Material: Gold or copper
  • Encapsulation Part
    Protects chips from environmental factors and provides optical control
    Material: Epoxy resin or silicone
  • Phosphor Coating Optional
    Converts the chips' blue emission to white on white-light versions.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 1.5 bar (typical for sealed modules)
other spec: Humidity: 5-95% RH non-condensing, IP rating: IP65-IP68 depending on enclosure
temperature: -40°C to +85°C (operating), -55°C to +100°C (storage)
Media Compatibility
✓ Indoor ambient air ✓ Dry inert gases (e.g., nitrogen) ✓ Encapsulated in silicone or epoxy
Unsuitable: Direct immersion in water or corrosive chemicals without proper IP68 sealing
Sizing Data Required
  • Required luminous flux (lumens) or illuminance (lux)
  • Beam angle and optical distribution pattern
  • Input voltage and current (DC or AC) with driver compatibility

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Thermal degradation
Cause: Inadequate heat dissipation leading to LED junction temperature exceeding rated limits, causing phosphor degradation and lumen depreciation.
Electrolytic capacitor failure
Cause: High operating temperatures or voltage spikes causing electrolyte evaporation or dielectric breakdown in power supply components.
Maintenance Indicators
  • Visible flickering or intermittent operation indicating driver circuit instability
  • Significant color shift (yellowing/bluing) or dark spots on LED chips showing thermal damage
Engineering Tips
  • Ensure proper thermal management with adequate heatsinking and maintain ambient temperature below manufacturer's specifications
  • Implement surge protection and voltage regulation to prevent electrical stress on driver components

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ANSI/IES LM-79-19 - Electrical and photometric measurements of solid-state lighting products CE Marking - Compliance with EU directives (e.g., Low Voltage Directive 2014/35/EU, RoHS 2011/65/EU)

Quoted from the published standard.

Manufacturing Precision
  • LED placement accuracy: +/- 0.1mm
  • Color temperature uniformity: +/- 200K across array
Quality Inspection
  • Photometric testing (luminous flux, color rendering index, chromaticity)
  • Thermal cycling test (operational stability under temperature variations)

Manufacturers of LED Array

Manufacturer profiles associated with LED Array.

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Frequently Asked Questions

What is the typical input voltage range for an LED array?

The typical input voltage range is 12–24 V DC, but this depends on the series/parallel configuration of the chips. Always verify the specific array's requirements with the manufacturer.

How is luminous flux measured for LED arrays?

Luminous flux is measured in lumens (lm) and typically tested according to IES LM-79. The range for LED arrays is 500–5000 lm, but actual output depends on drive current and array size.

What does CRI indicate and what range is typical?

CRI (Color Rendering Index) measures color accuracy, typically 80–95 for LED arrays, tested per CIE 13.3. Higher CRI is better for applications requiring accurate color rendering.

What is the expected lifetime of an LED array?

Lifetime is typically 30000–50000 hours based on L70 lumen maintenance, tested per IES LM-80. Actual lifespan depends on operating conditions and thermal management.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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