More phosphor surface are, higher max output (current), suits round optics/reflectors better than square shapes.
There’s an optimum dome radius - die area ratio to get the most photon extraction. The best die shape for spherical dome is circular, not square. Most Cree’s dome are sliced/flat at the sides to fit the die.
That looks really cool. Not as good as the circular LEDs from Luminus, but definitely unique.
Seems like they have really low lumen output though…
Based on experience, bumping up to 3 times official rated current is OK. This one is rated at 2A, so 6A should easily be done.
Could be the XPL2 new rival too
Output doesn’t seem so low to me. About 880 lm @2,4 A and CRI 80… This thing will easily surpass 1000 lm if pushed a bit harder. Now take 3 or 4 of them… Could surpass 5000 lm in a single cell light, even the CRI 80 version.
@clemence, sm403 sounds very good to me…
Looks like a larger die area than the XP-L, and it has a dome too.
You can drive it at 3x the rated current, but you could do 2x for an XP-L and still have more output.
If it had a small die area I would consider it, but….
The datasheet gives no dimensions of the die but based on the images the die size of the XP-L looks larger than that of the N. 319
I still see no real benefit from this one for flashlight uses. It’s in between XPG3 and XPL.
They’re still preparing the CRI 90+, hopefully Ra9080 would be available.
Just wondering if Nichia consider to make the 244A in all parallel wiring……could be the ultimate LED for the next 2 years
Well, I’d like to have at least one flashlight with the hexagonal die just for something different! It’s still going to be bright enough for me, even if it isn’t the “absolute” lumens leader in its size.
I would love any of the multi die LED’s in a 3V format, that truly would become the standard LED going forward IF it had a thermal pad so we could use a DTP star.
Dimensions for the 319 are: 3.5 mm X 3.5 mm square, dome is 3.1 mm diameter.
It does have a DTP
The R8000 LEDs are CRI 83 minimum
Yes, we knew that already. We just discussed something off topic about our preferred emitter design based on the nice 144A which doesn’t have thermal pad
“…Nichia claims its 319A high-power LED is a record breaker by achieving a whopping 164 lm/W at 700 mA (5,000 K). And the 319A is a production device, Nichia say, i.e. not one shining brightly deep down in a liquid nitrogen vessel or in the minds of a few theorists at MIT. Mass production of this super LED is planned for late this month or early January 2017 so with a bit of luck you will be dazzled by your daughter’s new flashlight for Summer Camp.
The size of the 319A is 3.5 x 3.5mm and the device and is foot-print compatible with earlier 3.5-mm LEDs, if not optically. Breakdown is specified at 1,050 mA (~3 W).
A variant with 3000 K color temperature is expected to yield 415 lm with a minimum CRI (color rendering index) of 80. This device won’t give you much deep red though as its R9 CRI specification is zero.
Nichia showcased a number of breakthrough LED technologies at the recent Lux Live show in London’s Excel Centre … what’s in a name….”
Source: https://www.elektormagazine.com/news/efficiency-record-for-production-led
1130 lumens max with 2.8 amps… <——- corrected. Still not impressed
So am I
Unless there’s CRI 9080 involved
The Nichia 144A I got, rated 900 lumen in about the same 8,4 watt power output with CRI 9050
Tested here: https://budgetlightforum.com/t/-/42057
And 1000 lumen in hard to get higher rank
The CRI 70 also outputs ~1300 lumen in that test
Interstiing, I would how they handle the heat, if they could be cranked up to ~~10-15A like the XHP series then it could be potent, doubt it though.
Thanks for taking the pictures!
Do I see a slight spiegelei here too?
And the three pictures on the bottom are beams from a reflector or a TIR optic?
That’s the test current. That highest possible forward current is 4.8 A.