Cree has upped the efficacy of its single-die 3.45 x 3.45mm XLamp XT-E leds. Called XT-E High Efficiency, a 25% increase is claimed over earlier XT-Es providing “a guaranteed minimum efficacy of 164 lm/W at 85°C and 350mA”, according to the firm. At least part of the difference is due to a lower Vfmax than standard ...
from ElectronicsWeekly http://www.electronicsweekly.com/blogs/led-luminaries/cree-boosts-lmw-of-xt-e-leds-2016-06/
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