The 219B V1 4500K R9080 was tested by Texas_Ace to put out 700 lumen at 4A, the 519A here I test at 1080 at 4A, so that is 55% more light. And my calibration is I believe even a bit lower than TA’s calibration so it is probably even a bit more than 55%.
13A for a minute appeared not nice on phosfor and silicon, the output has suffered a bit 
Come to think a bit, the not so smooth as usual transition from increasing output to decreasing output at 6.5A could also be explained by already starting phosfor degradation at that current. Just a theory 
very helpful, Thank You!
519a is 55% brighter than 219b, both at same 4A power level, Plus the 519a can handle 6.5A … pushing it to double the output than 219b… WOW!
looking forward to seeing more 519a CCT options in the future…
The best measure I could do was 3.33 mm, so yes it will wobble a bit in a 3.5mm center ring unfortunately. But the large die size will be quite forgiving for being slightly off-center.
Or even just some separation between the phosphor and dome due to shear induced by mis-matched CTEs
Here’s a graph comparing R90 3535 LEDs
Maukka’s tests for LH351D and SST-20
Djozz’s test for 519A with 0.93 factor
Texas Ace’s tests for 219C and 219B with 0.925 factor (calculated from Maukka’s and TA’s E21A tests)
1 Thank
comparison 
Thanks for the graph!!! I was curious how the 519A compares to the 219C and SST20. Now it is crystal clear!
great visual!
note the LH351d and 219c are 9050 LEDs w green tint, the others are 9080
of the 9080 LEDs, the sst-20 has green tint, the sw45k and 519a have tint below the BBL
I think the 519a stands a good chance at replacing LH351d, as the 519a has better output, tint, and R9 CRI. And it looks like the 519a has a chance of replacing my long affair w 219b, which neither the SST-20, 219c, nor the LH351d, managed to do.
It’s really too bad the 219C, or better yet 319A, never got 9080 sw45k love. Those really performed well. 519A is okay, but it is an all around package that will compliment the SST20 very well imo. Just wish we weren’t losing overdriving headroom with these new phosphor binders.
Thanks for your efforts djozz, great work!
EDIT: Thanks freeman for the comparison graph, very helpful!
Great results! I wish that other CCTs were available too.
see post 32
I saw, but shipping would be complicated for my location. If someone could sell them on Aliexpress, probably more people would be able to buy. I’ll end up using 219c 5700K.
can anyone help guesstimate the lumen outputs of 519a compared to sw45k, when using an RRT-01 host and driver? and or when using a FWAA host and driver? or SP10 Pro Host and Driver, on AA… , or in an AAA Tool?..
trying to understand if the 519a advantage is large or small, in the lights I use… at the power levels they operate at.
A guess from the provided graphs.
RRT-01 around 200 lumens from start up full battery.
SP10 Pro from GC harts graph maybe 50 lumens from a AA.
AAA tool probably around 10 to 20 lumens.
The FWAA not sure.
It could be slightly higher than my estimates given the lower vf of the 519a.
I estimated given the drive current per output.
I’m guessing the beam will be fairly floody like a LH351D or 219C and should work well with most TIR optics.
I’d try some but will probably wait until logistics isn’t so complicated.
Is there any angular tint shift?
fwiw, in a zebra,
519a is 30% brighter than sw45k
The 519A tested by Bob_McBob has much better tint (lower duv)