Any new discussion on the 319b? Looking at the data sheet it looks like they have the 80cri now?
Hey, thanks for the heads up. 
I see that output is a little higher than LH351D at the rated current (1.05A in both cases). Vf is similar at this current but goes up quicker. Thermal resistance is higher. Maximum allowed forward current (both pulse and continuous) much lower.
Not much potential for a thrower LED but at moderate currents it should be one of more efficient 3535 emitters.
And that hex spot….
I can’t find a single source for it though…
Ledrise “https://www.ledrise.eu/leduri-individuale/nichia-leds.html/nichia-x19-series-high-power-leds/nichia-nvsw319b-3535-high-power-smt-led-cold-white-5700k-cri70-512lm.html”. 70CRI though.
Ledrise now has CRI80 variants as well, in 2700-5700K:
This could be a neat LED for cheap AA zoomies.