I was planning on testing it but if you do it JaredM I’ll just do the color tests.
There’s room enough for both of us. I’d rather we be able to compare data, so if it’s not a hassle, lets both try and do a lumen/Vf/amp curve. I don’t have a spectrometer at this point though
:+1: :+1:
I’m keen for the group buy, I will order 5 or so pieces
I really like the 319 in 4000k. Have a couple of Lumens Factory examples and a Quark. Seems to be a happy blending of a 219B and the SST20 to my eyes.
After several weeks of absence I was in my 2m2 hobby universe once again to test a few emitters for rngwn, and while doing that I did an output test of the 519A from Simon too. So here, without proper test thread, are my results. Mind that djozz-lumens are a bit higher than maukka-lumens, on average around 7%.
*some irregularities in the measurements around maximum output, I think the current knobs of my power supply are getting dirty over time and the current spontaneously fluctuates a little. Still it looks like the numbers are good enough.
*compared to 219b V1 4500K R9080, the max is twice as high, at 6.5A I measure 1400 djozz-lumen (219b: 700lm at 4A), and the voltage is 0.35V lower.
*compared to 90CRI Samsung LH351D (5000K was tested by maukka) it performs very similar, but with better tint and CRI.
I measured the tint in the hotspot from a small smooth reflector that I placed on the led at 2A current.
CCT= 4430 K
Duv= –0.0011
CRI= 94.4
R9= 95
Conclusion: wonderful 
Some pics. Next to 219B V1 4500K R9080, the package is a bit smaller. And the phosfor texture is very different, rougher which seems a trend with modern leds.
The 519A at 0.5 mA
Excellent, thank you for the test Djozz
thanks for sharing your data
IF both the sw45k and the 519a are at the same power level, what is the percent difference in output?
From your data, I calculate the 519a is 23% brighter, at the same 4A power level as sw45k… is that correct?
exactly what I was hoping for. It will go into my headlamp replacing a LH351D, which is by far my most used light (hours its on) and will benefit from nice tint and CRI the most.
thank you for testing!
Finally! 4mm class standard DTP compatible 95CRI emitter is here! And with a rosy glow 
I’m sooo glad this can take 5A and still have breathing room. I was afraid it might fail right around 5.5, but reaching nearly 7A is wonderful. My lumen estimates at 5A where pretty spot on, and R7000 should hit ~1800 at that level and probably 2100 at 7A. These compete well with an XPL for example.
I still would love an SST40 95CRI, but this will do for now.
Thanks Djozz. I’m extra excited now for my Convoy delivery.
Is that a side length of ~3.37mm? Gonna need new centering rings…
Thanks for the 519A test Djozz! There’s finally a good option for high CRI and decent tint 3535 3V emitter!
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!