IEC 63403-1:2024
Horticultural lighting - LED packages for horticultural lighting - Part 1: Specification sheet

Standard No.
IEC 63403-1:2024
Release Date
2024
Published By
International Electrotechnical Commission (IEC)  IX  /  IEC
Latest
IEC 63403-1:2024
 
Introduction

IEC 63403-1 Standard Overview and Technical Background

Published by the International Electrotechnical Commission (IEC) in February 2024, IEC 63403-1:2024 is the first part of the technical requirements for horticultural lighting LED packages—specifications for specifications. The development of this standard stems from the unique demands placed on LED technology by modern agricultural lighting, particularly the distinct spectral requirements of plant photosynthesis compared to traditional lighting.

Analysis of the Standard's Core Requirements

Performance Characteristics Specifications

Chapter 5 of the standard details the performance characteristics of LED packages. The most distinctive aspect is the specification for photon flux, rather than the luminous flux of traditional lighting. This is because plant growth relies primarily on the number of photons, rather than the visual response of the human eye.

Parameter TypeTraditional Lighting LEDHorticulture Lighting LEDMeasurement Requirements
Light Output MeasurementLuminous Flux (lm)Photon Flux (μmol/s)Tested at 85°C Junction Temperature
Spectral CharacteristicsColor Coordinates, Color Temperature Centroid or Dominant Wavelength (300-800nm Range) Efficacy Indicators Luminous Efficacy (lm/W) Photon Flux Efficacy (μmol/J) Curve vs. Current Curve Current Curve Current Curve Current Curve Luminous Efficacy Spectral Characteristics In-Depth Analysis Spectral Characteristics Different Requirements for Monochrome and Multicolor LEDs The standard specifies monochrome and multicolor LED packages differently: for monochrome LEDs, the centroid wavelength (λc) or dominant wavelength is required; for multicolor LEDs (such as white light LEDs), chromaticity coordinates are required. This distinction reflects the specific effects of different spectra on plant physiology in horticultural lighting.

Spectral Stability Requirements

Clause 5.10-5.12 of the standard specifically emphasizes spectral stability over time, temperature, and current, a key technical indicator for ensuring a consistent plant growth environment.

Thermal Management and Electrical Characteristics

Thermal Characteristics Specifications

Chapter 6 of the standard details operating characteristics, with thermal management being key to the reliability of horticultural lighting LEDs. Thermal resistance values based on dissipated power or electrical input power must be provided, with clear indication of whether they refer to the junction-to-case or junction-to-solder resistance.

Electrical Characteristics Test Conditions

All electrical characteristics tests must be performed at a junction temperature of 85°C or calculated from test values at 25°C. This stringent requirement ensures performance accuracy at actual operating temperatures.

Mechanical and Processing Characteristics

Dimensions and Mechanical Characteristics

Chapter 7 requires detailed geometric dimensions, pad locations and sizes, electrical contact identification, and recommended pad layout on the PCB. This information is critical for the automated production and reliability of LED packages.

Processing Characteristics Recommendations

For surface-mount LEDs, the standard requires reflow soldering characteristics recommendations; for non-surface-mount LEDs, assembly information is required. These requirements reflect the standard's emphasis on manufacturing processes.

Standard Implementation Recommendations and Application Guidelines

Data Sheet Preparation Recommendations

Based on the standard's requirements, manufacturers preparing data sheets for horticultural lighting LEDs should ensure: the brand and product names are clearly identified; the scope of application is clearly stated; all graphs use linear scales and fully saturated colors; and complete spectral power distribution and photon flux distribution diagrams are provided.

Testing and Certification Recommendations

Manufacturers are advised to conduct photon flux maintenance testing in accordance with IEC 63013 and wavelength shift testing in accordance with ANSI/IES LM-80-20 to ensure that their products meet the long-term performance requirements of the standards.

Technology Trends and Outlook for Standard Evolution

With the rapid development of plant factories and vertical farming, horticultural lighting LED technology is moving towards higher photon efficiency, more precise spectral control, and longer lifespans. As the first international standard specifically for horticultural lighting LED packaging, IEC 63403-1 provides the industry with a unified technical specification framework and is expected to be continuously updated and improved as technology advances.

The release and implementation of this standard will effectively regulate the horticultural lighting LED market, promote technological innovation, and provide a solid technical foundation for the development of modern agricultural lighting worldwide.

IEC 63403-1:2024 history

  • 2024 IEC 63403-1:2024 Horticultural lighting - LED packages for horticultural lighting - Part 1: Specification sheet
Horticultural lighting - LED packages for horticultural lighting - Part 1: Specification sheet

Standard and Specification

CEI EN IEC 63403-1:2024 Horticultural lighting - LED packages for horticultural lighting – Part 1: Specification sheet EN IEC 63403-1:2024 Horticultural lighting - LED packages for horticultural lighting - Part 1: Specification sheet GSO IEC 63403-1:2025 Horticultural lighting - LED packages for horticultural lighting - Part 1: Specification sheet NF C73-003-1*NF EN IEC 63403-1:2024 lighting - LED packages for horticultural lighting - Part 1 : specification sheet NF EN IEC 63403-1:2024 Horticultural lighting - LED packages for horticultural lighting - Part 1 : specification sheet DANSK DS/EN IEC 63403-1:2024 Horticultural lighting – LED packages for horticultural lighting – Part 1: Specification sheet SS-EN IEC 63403-1:2024 Horticultural lighting – LED packages for horticultural lighting – Part 1: Specification sheet SFS-EN IEC 63403-1:2024 Horticultural lighting - LED packages for horticultural lighting - Part 1: Specification sheet DIN EN IEC 63403-1:2025-05 Horticultural lighting - LED packages for horticultural lighting - Part 1: Specification sheet (IEC


Copyright ©2026 All Rights Reserved
Update: Sun, 01 Feb 2026 14:34:46 +0000