NEMA publishes SSL 3 White LED binning for general illumination
By Anthony Capkun
The National Electrical Manufacturers Association (NEMA) has published SSL 3 “High-Power White LED Binning for General Illumination”, marking NEMA’s first solid-state lighting (SSL) standard.
Produced by NEMA’s Solid State Lighting Section, SSL 3 provides
standardized categorization areas (bins) for the colours of White
light-emitting diodes (LEDs) used for general lighting.
LED manufacturers use binning to manage variations in LED performance
during mass production. When they use different binning structures and
labelling, LED system integrators and assemblers face unnecessary
testing, verification, qualification and validation processes.
The bin structures established by SSL 3 promote continuity among
suppliers. The standard also sets a level of expectation for colour
characterization that results in a reasonable number of bins for
stocking purposes. (The bin structures are based on ANSI colour
standards for fluorescent lamps.)
“As the first solid-state lighting application standard for colour in
general lighting, SSL 3 will streamline the binning process, alleviating
stock and consistency issues for LED integrators,” said Robert Hick of
Leviton, who chairs the section. “Upcoming revisions of the standard
will address additional characteristics for binning. SSL 3 demonstrates
lighting manufacturers’ commitment to work together to make
energy-efficient SSL technology easier for integrators to adopt on a
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