IEC 63403-2:2024

IEC 63403-2 ®
Edition 1.0 2024-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Horticultural lighting – LED packages for horticultural lighting –
Part 2: Binning
Éclairage horticole – Boîtiers LED pour l'éclairage horticole –
Partie 2: Tri
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IEC 63403-2 ®
Edition 1.0 2024-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Horticultural lighting – LED packages for horticultural lighting –

Part 2: Binning
Éclairage horticole – Boîtiers LED pour l'éclairage horticole –

Partie 2: Tri
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.99  ISBN 978-2-8322-8164-2

– 2 – IEC 63403-2:2024 © IEC 2024
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Measurement conditions . 5
4.1 Temperature . 5
4.2 Currents . 5
4.3 Pre-conditioning . 6
5 Measurement . 6
6 Binning . 6
6.1 Binning by forward voltage . 6
6.2 Binning by photon flux . 6
6.3 Binning by chromaticity . 7
6.3.1 Narrow-band emitters . 7
6.3.2 Achromatic emitters . 7
Bibliography . 8

Table 1 – Binning currents . 6

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HORTICULTURAL LIGHTING
LED PACKAGES FOR HORTICULTURAL LIGHTING –

Part 2: Binning
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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IEC 63403-2 has been prepared by IEC technical committee 34: Lighting. It is an International
Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
34/1141/FDIS 34/1162/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.

– 4 – IEC 63403-2:2024 © IEC 2024
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 63403 series, published under the general title Horticultural lighting
– LED packages for horticultural lighting, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
HORTICULTURAL LIGHTING
LED PACKAGES FOR HORTICULTURAL LIGHTING –

Part 2: Binning
1 Scope
This part of IEC 63403 specifies the binning method for LED packages for horticultural lighting.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 63403-1, Horticultural lighting – LED packages for horticultural lighting – Specification
sheet
ISO/CIE 11664-1, Colorimetry – Part 1: CIE Standard Colorimetric Observers
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 63403-1 apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
4 Measurement conditions
4.1 Temperature
Binning of the LED packages shall be conducted at a junction temperature of 85 °C by one of
the following methods:
a) binning according to the values measured at t = 85 °C;
j
b) binning according to the values obtained by measurement at t = 25 °C followed by
j
extrapolation to 85 °C.
...