No such thing (edit: "no such thing as a stupid question" is what I meant here, I re-read this later and decided to clarify)
According to Led4Power earlier in the thread, essentially yes. There may be slight binning differences (flux and/or Vf) between them, or at least between the batches he got.
Bonus points: Boost HX is just the 2mm2 white flat, on the larger die.
Thanks for your reply, maybe i should have asked earlier, not after ordering :person_facepalming:
That 4040 CULNM might be just what i was searching for
I use this driver in B158 and paired with the CSLNM.1 it has 370kcd throw, last time i measured without driver and NCR B battery to limit current it was about 380kcd. I think this is the sweet spot for this led.
That is a Sofirn C8S host with Simon's 22mm SST-40 (max 8A) linear driver. Driver filed down to a tad less than ∅21mm and modified with an additional (slightly contact worn) R050 sense resistor. Measured 8.1A+ max current with power supply.
I am getting 132-133Kcd at 30s, 137-138Kcd peak, at close to 5 meters of distance using ceilingbounce app. Measured the same way I did with M1.
I measured ≈150Kcd for this build weeks ago, with an old reflector I swapped due to some minor damage. Driver was not modified at that point (I measured ≈7.63A back then).
Smartphone is a Lenovo Zuk Z2 Pro (Z2121 with custom Oreo 8.1 ROM). Do not know how good or accurate it is measuring illuminance, albeit I know it measures less than a Moto G 2013.
But heck, the intensity is way off I think. It should be getting at least 180Kcd… should be. The reflector's opening is ∅9mm, and is a little bit taller than the usual Convoy reflector (≈32.2mm).
I do not honestly know how well focused is the emitter in my C8S. I lowered the reflector gasket quite a bit, until the 5050 square gap surrounding centerpiece eroded and dissapeared. Did I go too far?
Concerning the M1 (@ 4.75A), it scores above 100Kcd cold start so that must be right, the M1 reflector surface looks to be about half of a C8. And its surface finish looks of higher quality (versus C8S).
I used the smaller sibling of those gaskets, the XP-L version, on my CSLNM1.TG C8+ with 7mm bottom hole reflector. I sanded down the lip where the reflector rests on to about 0.5mm and it’s perfect. I could just about spot cattle and cattle herders at 600m away this weekend. I could see them moving on the hill. So I know it really performs well.
My previous gasket attempt was sanded down to about 0.2mm and it was worse. Looks like 0.5-0.6mm is a sweet spot.
It shows in the hotspot if you are good, the NM1 in a quality smooth reflector (C8 reflectors are usually good) makes a very well defined evenly illuminated hotspot. Slightly off and everything goes assymmetrical and/or fuzzy.
I could of sworn I read earlier in this thread that the new 1mm 4040 CULNM can be reflowed onto a XP mcpcb 3535? Before I attempt another reflow and heat this poor led up for the 3rd time can somone confirm 3535 mcpcb’s works?
Here’s the catch: not every 3535 board has the exact same solder pad dimensions. Reflowing 4040 leds works reasonably well on boards with electrical pads that are a bit thinner and thus wider apart. The amount of solder must be fairly precise too, and make sure you position the led very very well!
But yes, confirmed, I succesfully soldered the 4040 CULM on the stock 3535 board of a Micro-GT and have a working flashlight.