Good catch, THE_dAY very kindly gifted me three Nichia 219B V1 4000K leds from Illumn.com, they are underway somewhere. When they are in I will test one (not to death, I will use them for a triple). I am mainly curious about the Vf compared to the old 219B and the 219C.
This is fantastic! I canāt tell you how many times Iāve referenced your data/tests to compare information for purchasing a particular light. Like most of the previous posts have said, your work is invaluable.
Hi djozz, lot of charts, but no V1. The one I am trying to findā¦
I already use the 219B V1 sw50 (5000k) @ max 2,4A* for momentary use, without issue, so far so good. It replace an old XML-T6. Temperature management seems to be more an issue than tint shift, get hot fastā¦ Anyway, not using max for more than 1mn.
The 219Cāchart you released lately looks great for a 80CRI. Do you think it would be possible to replace a XP-L HI with a 219C (I donāt mind loosing lumens, but the XP-L HI is really too cool) or it would be better to simply use a XP-L warm high CRI?
Even tough the 219C has some slight turquoise tint, the CRI is nicer compare to factory XM-L2 and other Cree cool white emittersā¦
Still prefer the 219B-V1 as a high CRI neutral white but above 2.5 ā3A the 219B-V1 may fry easilyā¦
I would like to build a high CRI thrower single 18650ā¦ But with a reflector larger than ET sticksā¦
(*2,4A was measured with XML)
I was also wondering:
If a dedomed XP-G match the beam profile of a dome XP-E, does a dome 219C (which is close to a XP-G) would have the same beam than a XP-L HI (which surface is wider than XPG/219B and equivalent to a XP-L dedomed) within same reflector, of courseā¦
The 219B-V1 I have been using have a nice low Vf. Had a triple hooked up to a 105C 8*0,35+6*0,38 and guess what: Even with my very long and thin dmm probes I got 5.08A!!! I wouldnāt try these with a FET-driver, not even a triple, way too much amps, too much heat generated. A member of the german forum fried a triple with a FET-driver, got over 16A initially.
Outstanding work djozz! Keep it going please, very appreciated.
I made some X6 triples lately and wrote a build thread in german and I compared different emitters under all different kinds of CUTE-3-SS optics. Iām afraid you wonāt see the images from the build and optics comparison without beeing logged-in, but: I think the beamshots should be visable to everyone. There are two X6 triples with B-V1 and some more lights, have a look if youāre interested.
djozz, thanks for consolidating all your invaluable work!
CityCoffee, I was planning on running the 219B V1 @~2.5A but you say thatās too much heat. Was it more heat than the XML it replaced? From djozz test of the previous 219B I thought it would be fine but I guess I might have to run it slightly lower.
Regarding the temperature @2.4A I made this remark just based on memory. Also, some driver behave differently according to the emitter vf. (I cannot guaranty you that my V1 is driven at 2.4A)
2.4A was measured by another user with factory XML emitter. On my side, the tail cap measurement on burst mode cannot be done with my tester at all (?)
According to djozz, the V1 is between the 219B and the 219Cā¦ The question is:
How close to 219C
djozz chart shows some very good performance from the latest version and seems to be indestructible. On the other side, the 219B is far behindā¦
I believe that the 219B V1 can be used (for momentary period) around 2.5A without issue.
Without good test (djozzās style) I would hesitate to associate a 219b-V1 to a 3-3.5A driver.
Apparently 219C is āveryā fine at this current. (Nichia even set a max @ 1800mah vs 1500m for other 219bā¦)
Again, what would be nice is a 219C CRI90 sw45 or sw50.
Something very nice with the 219B-V1 is itās neutral white characteristic. If you are used to warmer emitter, it may even looks too cool (especially with the sw50)
Other 4-5000k NW led do not make the red and yellow pop-up as the Nichia does. Finally, compared with a cool-white it makes the v1 looks off-white again. Weird but finally, it is what should be a true neutral white> no hue perception and a good color resolution.
I believe that some 3000k can provide a good CRI but with a strong orange hue.
Non high CRI neutral white (XML) need to be pushed to clear-up the greenish tint associate to them. Annoyingā¦
Hope that someone manage to test more in details the V1ā¦ H)