Cree is claiming 148 lm/W at 85°C (350mA) for its latest lighting LED.
XT-E, as it has been named, will hit 162 lm/W at 25°C, it added.
"The XT-E LED more than doubles the lumens per watt of the XP-E LED family, in the same 3.45x3.45mm XP footprint," said Cree. "By leveraging the XP footprint, customers can incorporate the XT-E in existing XP designs."
148 lm and 148 lm/W comes from a 6,000K cool white it 350mA, 85°C, and up to 114 lm and 114 lm/W from 3,000K warm white.
These high bin devices may not initially be available in quantity
Cree made a comment about reliability testing: "Since the XT-E white LED is a successor product to XP-E LED, the application for ENERGY STAR qualification requires only 3,000 hours of XT-E LM-80 data, instead of the normal 6,000 hours."