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Cree Has Announced The XLamp XP-G3 Royal Blue LED That The Company Claims To Be The Highest Performing Royal Blue LED On The Market

Cree has announced the XLamp XP-G3 Royal Blue LED that the company claims to be the highest performing royal blue LED on the market. Cree said that the new LED delivers wall plug efficiency as high as 81% although the conditions for that performance level were not specified. Cree is specifically targeting horticultural solid-state lighting (SSL) applications with the new product and also believes that the LED is a good fit in general for RGB (red, green, and blue) luminaires in entertainment and architectural or façade applications.

Cree has made a strong push into the horticultural space of late where blue and red LEDs are used to match the chlorophyll absorption peaks in plants, as we have described in several feature articles including the most recent article last fall.  Cree had released what it calls a Photo Red LED at boosted performance levels back in October of 2016.

Getting back to the performance of the new royal blue products, the LED is integrated in a traditional high-power, ceramic package that enables operation at high drive current levels. The wall plug efficiency specification is a pure measure of efficiency that relates radiometric output power to electrical power input. We more often consider efficacy when discussing white LED efficiency because efficacy in lm/W considers the sensitivity of the human visual system. But human sensitivity is low in the blue region so radiometric power is a better basis for comparison of products.

The new led delivers 3402 mW at the maximum drive current of 2A when operating at 85°C. That would suggest wall plug efficiency in the 60% range. But we would have expected maximum efficiency at lower drive current levels just as we have the same expectation for white LEDs in terms of efficacy.

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“Cree’s high power LED technology provides the best combination of photon output, efficiency and reliability to drive the replacement of outdated high pressure sodium lights with LED lighting solutions that minimize power consumption and maximize crop yield.”