Thanks for the link! The beam seems nice, but maybe not as warm as I would like (that particular version, maybe a warmer one would be nicer). Thanks for the link and information! :+1:
Hum, I didn’t know that one! Seems a nice option! I gotta find a place where the warm version is sold. Kaidomain only has the 6500K. :nerd_face:
I’d rather not have to dedome a led, nor to use a dedomed one, since they normally produce some shifts due to their phosphor edges.
In any case, thanks for the suggestion. :+1:
A mix of the answeres above CRI won’t matter that much (for now) so the temperature will be what concerns me the most. Maybe the XP-P can become a good solution, in pair with the Yinding 3000K.
Since CRI does not matter, consider the Osram PC Amber, which is super warm (perhaps too warm for your use) and has been tested at 60-ish CRI if I recall correctly. The next best thing is the XP-P, though I'm not sure where to source a warm one. The XP-P has about the same output as the Yinding, but with half the effective area! That's double the intensity.
Thanks QReciprocity42, I also didn’t know that emitter!
However, will it be on a “throwy” side as it is or did it have to be dedomed?
Right now, I am not sure what I would consider as “too warm” so this could be an option, in case it throws well!
I guess I need to buy some leds and start making experiments
Digikey and Mouser currently stock the XP-P LEDs. I just ordered a handful of warm (3000k and 4000k) XP-P LED’s from Digikey to try swapping into some lights.
XP-P is domeless, it is Cree’s attempt at a small die high intensity LED.
I ordered 1 from Kaidomain to try it, but KD only has 6500K.
From what i’ve seen (tests on BLF) it’s great up until you push more than 2 Amperes of current.
I didn’t know they made neutral and warm white too.
The Osram PC Amber is domeless and has a 1mm^2 die, making it extremely throwy. The Convoy Flashlight Store on Ali stocks it. The advantage of the XP-P is that it comes in more color temps (at least in theory) and has higher CRI (70/80 instead of 60). The 3535 footprint also makes XP-P compatible with more boards.
QReciprocity42 I think you need to check your figures: the cool white XP-P tops out at around 800lm, the Yinding 5050 at about 1800lm. Both will be lower output in warmer tints obviously, but this should be roughly proportional.
Yup, I noticed the XP-P is domeless, but I was asking about the Osram LED that was mentioned As you say, AliExpress has only the 6500K version, far from what I ’d want :zipper_mouth_face:
Is that led this one Osram KY CSLNM1.FY: Page Not Found - Aliexpress.com ? If it is, the definition comes as “orange-yellow” not as amber.
I’ve abandoned the 8A requirements, as the conversation followed and suggestions came in! The 8A would be good, but since the possible candidates do not reach it, I skipped that requirement, focusing on the colour of beam, domeless and voltage (3V) .
See Post 126: https://budgetlightforum.com/t/-/68542?page=4
The problem with the YinDing is that going warm loses A LOT more output. The warm version has been tested, and it maxes out around 850 lumens, less than half of the 1800 of the cool version! And it really does underperform expectations, see Post 128 in above link.
Not yet, but the computation ain't too bad. The highest output bin for 5700K is rated 360 lm, 320 for 3000K. So one loses 11% output going from 5700 to 3000. Nothing like the Yinding, which loses half of its output!
Sure, make that 1000 for bare LED. The XP-P, with the 3000K reduction, is about 730lm. If the Yinding wants to match that intensity, it needs 1460lm, 1000 simply would not do.
The real problem is that when Cree goes from 5700 to 3000, it only loses 11% lumen count. For Yinding, it loses a good 44%!
CRI won’t matter that much (for now) so the temperature will be what concerns me the most. Maybe the XP-P can become a good solution, in pair with the Yinding 3000K.