Not a lot to say about it, same sphere setup as my other tests.
The real key with this LED is the tint and CRI. In a reflector it is good but in a TIR it is simply amazing. Something about the way a TIR mixes the beam just gives it that boost to make an amazing EDC S2+. I gave out a bunch of these as gifts yesterday and everyone loves them.
Even though it is 4000k it feels more neutral then that due to the lack of “cree tint shift”. It is just a very nice white light with a hint of warmness to it.
hotspot size is smaller then an XP-G3 and larger then an XP-L HI, a good middle ground beam pattern.
Charts, click for larger and clearer images:
Comparison with the 219C D320 5000k 70CRI emitter:
The efficacy is approximately equal to XP-G R5 low CRI (139 lm/watt @350mAh, 25 Tj).
For such a high 9050 standard, this 219C is an excellent choice in the 350-700mA range for residential luminaires with minimal heatsinking.
In other news Never try to use the 219C without a DTP star with an FET driver, even for a second. They do not like this at all lol.
They will also pull over 10 amps in an FET driver if you do not turn the PWM down with a high drain cell, I found a PWM around 75% (or 192-200 in the firmware) works good and has the current start at around 6A and drop from there. We need to get some voltage compensation going in the firmware, so it could raise the duty as voltage drops to keep the current more consistent. Plus a new driver I am working on needs this anyways
In other other news I have been putting these in everything I can get my hands on and positively LOVE them. Not the highest output LED’s ever but boy are they pretty. I purchased 40 of them and they will not even remotely be enough.
They work great in the small AA/AAA and 10440/14500 lights, I built several of them today, getting 450-500 lumens out of the lithiums and around 80-100 lumens off dollar store alkaline.
A lumintop Tool + 219C + 10440 = amazing light for the size.
Cheap SK68’s also transform into something worthwhile with a simple emitter and DTP MCPCB swap.
I have some 3000k as well but can’t decide what to put them in, kind of running out of hosts lol. I think I am going to try one in a P60 host tomorrow.
I didn’t get the 3500k as I was too late to put my name on that list and they sold out. Although generally 4000k is about as warm as I like anyways, 4500k I consider ideal in may cases. Although these nichia 4000k appear closer to 4500k Cree’s.
I built the luminous tool I mentioned earlier with the 4k 90+ CRI LED. At the same time I built a hugsby xp-1 with a 219C D320 5000k 70CRI from MTN.
Comparing them side by side tonight and the differnce is amazing. The 70cri LED looks great until you see it next to the 90cri, it completely blows it out of the water.
I get ~500 lumens from the 70cri and ~450 lumens from the 90cri.
Both are great lights though and handle a 10440 surprisingly well.
Yeah interesting how perception is on tints.
When I got my first HCRI it was an old Nichia 119T and it was better than anything I’d seen, every color ‘popped’ with it.
But if I saw that same Nichia now I would not be impressed in the slightest. It would look like a green Cree next to these newer gen Nichias.
Btw, clemence might get some 219B R9080, either it be 4000K or the 4500K. According to the R9080 chart the sw45 (4500K) look very promising. The tint chart has it shifted more toward the red spectrum unlike the other temps (4000K, 3500K etc).
Remember, the manufactures reccomedations for max current are all base on non DTP attachments. Sure, we overdrive them beyond what they might be rated at even if they were spec’d on DTP copper but we couldn’t achieve what we do if those specs were absolutes.