You’re probably correct. The bin code is 50G x=0.3447 y= 0.3553 duv looks to be slightly negative. But it’s a 3 step ellipse so a lot of variation is possible there. I have 8 of them on the way so I’ll let you know.
Great info, thanks all! I ordered a couple of xhp50.3 hi variants from kaidomain (90 cri 2700k and 5000k, and 80cri 4000k).
So what kind of currents can these handle? 18W in the 6V configuration (with a convoy 20mm xhp50.2 driver) seems like babying it. Hank’s b35am dm11 driver seems to give around 22W (6A measured at tailcap): that better. How about feeding it 30W?
I might have to plug one on one of my cheap variable buck drivers and visually gauge the point of visually diminishing returns.
Thank you. I was wondering if being domeless made a difference. Also, it also apparently has improved thermal conductivity, so the efficiency curve could could be a bit higher.
In any case, going off the 50.2 tests, it seems like 18W and 22W are reasonable.
Green AR coating is really effective for lowering the duv. XHP70.3 Hi 5000K 80cri from Kaidomain went from 0.0028 with purple AR coating to 0.0000 with green AR coating. No further modifications needed. Flashlight was Convoy M21B.
If I used 5 modes option in 12 group driver, mode 3 was 0.0001 and mode 4 0.0000. No donut hole thankfully. It seems I had a problem with reflow. Not all dies lit evenly.