Received my order of 3v, 6v, & 12v 4-up XP and a XHP70 bases. They look great and are DTP. So the OP’s suspicion is correct. Thermal pad is nice and close to the top surface. Wondering if the traces are thin. They appear to be so, but the solder resist is thick and may be creating the illusion of thinness.
Oh, the 3v is indeed 3v and the 12v is 12v. Appears to be a pretty good deal.
Sounds good. Have any plans for them?
Reeaally cool! :CROWN:
Trace thickness matters, but also its width.
Is the 3V board layout as I presumed? Pics? 
Regards,
Salvador ^:)
!!
! !
Beamshot or numbers? I am curious how it compares to an XHP70.
It’s sold so I’m not sure! But The beam was similar to XHP70
Not yet. One of the vendors has a bunch of 4 up glass optics that are cheap that might potentially work. Need to ask them about the spacing on the emitter end. Forgot which one it is. I mentioned them earlier above somewhere. Otherwise, the single big reflector like shown above by 3Tronics looks promising.
EDIT: Guess I didn’t mention the vendor in this thread. It was Kaidomain, but looking again at their optics, none appear to be a match for these boards. Maybe I will try to splice 4 individual optics together.
Yes, it is. Negative on the 4 inside pads and Positive on the outside pads.
I’ll try to snap a few photos tonight in a light that will hopefully reveal the traces.
I expect these 4-ups in a reflector would have not so good throw. Half the area of the reflector will just be reflecting the spaces between the dies. It is an easy way to get a lot of power in a small space though.
^ Bet you're right. Will be interesting to see if these 4-ups can be used for more than just big emitter reflectors.
I took a couple quick pictures last night before hitting the sack. Looking at them now, I need to run a straight edge across the top of them with a light behind them to see how much lower the thermal pads is lower than the electrical pads. My impressing looking at them directly was that they are close enough. But the first picture has me wanting to make sure. Threw in a Noctigon and SinkPAD for comparative purposes.
If you cut a reflector into quadrants and positioned each quadrant so its focus was at its respective LED, all the reflector area would be correctly utilized and you would have good throw. It would sort of be like making your own quad reflector, sort of like the TM16GT reflector. Of course, this would not be an easy project, but it would be an effective way to make a high output thrower like the TM16GT. On the other hand, there are probably large quad reflectors already available that could have similar performance.
