Cree Announces Next-Generation XP LED Delivering 200 Lumens Per Watt

If you missed the recent announcement from CREE about their latest product release then it's worth a read now

DURHAM, NC -- Cree, Inc. (Nasdaq: CREE) introduces the XLamp® XP-L LED, the first commercially available single-die LED to achieve breakthrough efficacy of up to 200 lumens per watt (LPW) at 350 mA. Delivering up to 1226 lumens in a 3.45 mm x 3.45 mm package, the game-changing Cree® XLamp XP-L LED enables an immediate performance increase of 50 percent or more as a drop-in upgrade for lighting designs based on Cree’s market-leading XLamp XP-G LEDs. 

Read the whole story here

With a world leading manufacturer like CREE it won't surprise anyone to learn that Earlsmann uses their LEDs, almost exclusively, in our products.   In fact, we actually use their COB (chip on board) 2530 which achieves a very creditable 112lm per system Watt (350mA) in our Lincoln Street light with gull wing lens - this takes account of power supply and lens losses.  For the bare COB, at 800mA, the CREE published figure is around 24lm/W.

It is worth mentioning that CREE characterise their products with a junction temperature of 85 deg.C  Many of their competitors quote their products at a junction temp. of 25 deg C which is quite unachievable unless the ambient temperature is around freezing!   What's more, some lighting manufacturers quote the LED life in their data - a bit misleading, I think, as it can't be achieved. 

More on LED specifying next time...
LM80/TM21