The very good color consistency (color binning) in the directional retrofits is achieved through the close grouping of the LEDs, which corresponds to the coverage of a 5-step MacAdam ellipse. 3-step MacAdam grouping is additionally available for applications requiring very good color homogeneity. The Duris S 8 is grouped by color coordinates at the junction temperature of 100°C instead of at room temperature. In terms of color rendering, it has a CRI of more than 80.
The new Duris S 8 measures only 5.8 x 5.2mm and is available in two versions: with six or eight chips. Version 1 (six chips) comes with a grouping current of 200mA, forward voltage of 18.6 up to 22.2V and a luminous flux of 390lm at typical 25°C and 3,000K. Thanks to the luminous flux of 500lm at 200mA, a directional retrofit is possible even with the 8-chip version. This model has a forward voltage of 24.8 up to 29.6V, for which compact, low-cost driver modules are available on the market. The Duris S 8 package consists of an innovative plastic housing material that is not only particularly resistant to ageing at high temperatures and in short-wave light, but also costs less than the ceramic housing frequently used.
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