And why are the boards from Hank, MTN or whatever the best? A higher price does not make something better. Price is a trait whose value grows in an inversely proportional way. This is not meant to say that paying more for something is necessarily bad, but it needs to have a good reason, a reason of service to one and all.
I am pretty sure that any properly designed and decent quality DTP board will perform within error marging of the above. Kaidomain sells great boards (3030 and 4040 MCPCBs available), for example. And if you don't need a rare size or something fancy, there are even cheaper options and many of these could serve you (some board models are not DTP or lack thermoelectric separation -as they call it-, but it can be easily discerned if you know what to look for -and they are cheap anyway-).
So what is the best whatever? One whose value and quality to cost ratio excels. Any money you save can then be used to help you, those around you, and etc.
Well you can buy well known, established and working product, and you can buy opposite. You can buy Mercedes and you can buy Yugo and sure they will both drive you to destination.
KD boards seems like a copy of noctigon V1 boards and that is good cause they should work… But question for you. Why buy from kaidomain copy of noctigon board while I can buy same original noctigon board from IO store for less money than KD boards (when I take larger quantities)?
In my experience, the performance difference between the various available boards, as long as the thermal pad is DTP, is not measurable. There are some quality differences in how brittle the solder mask is and how well the traces are attached to the boards, but I found that only relevant when a board is used several times or is severely abused by overheating. Also sometimes the underside is not flat enough to my taste or it has a sharp edge that sticks out, but I always sand it anyway on a flat surface so that is a minimal issue.
I received this brand new led from TheOnlyDocc, who managed to get some samples from Osram. Partnr is KP CSLNM1 F1, brightness bin 7N (lowest bin on the datasheet), chromaticity bin A. Datasheet here: https://www.osram.com/media/resource/hires/osram-dam-2494973/KP%2520CSLNM1.F1.pdf
It is clearly the same generation as the White Flat, 1mm2 die, the die is a phosfor-converted blue led with a surprisingly uniform emission surface.
The spectrum at 50mA (does not change noticabl…
Based on this I would expect probably ~10A for a Green 2mm. Probably an amp or two more for a 4040 footprint.