What’s the surface area? The CULNM1 was hitting about the same lumens IIRC - and possibly higher, if I’m remembering right that someone besides L4P found a slightly higher bin
I need to point out that my ‘lumen’ calibration is far from concrete. I cross referenced a bunch of emitters to maukkas readings as well as a few other prominent testers and it seems within a reasonable margin of alignment. Relative values I have a high level of confidence in though.
The Boost HL aka CULNM1 may still be the king, and it has the major advantage of having a neutral thermal pad, but Osram has killed that model and I’ve never been able to source one that doesn’t come with a flashlight… These are cheap at Mouser and perform very well it seems. Centering can be done with a twisted square XM gasket or a slightly reamed circular XP one. I successfully reflowed it to an XP Noctigon the first try. Luck? Idk, not testing it lol.
For sure it’s going to be the best option for FET drivers.
With a Convoy 5A linear driver and near fully charged LG H26 (4.11V) I saw 272kcd with the HHL. Same setup went for ~237kcd on it’s best day (229kcd most recently) with the WF1. I’ve put the cell on charge and will try it DD next. Guessing I’ll see around 5A that way. Maybe I’ll squeak past 280
Non-isolated thermal pad (cathode) is a no-go for flashlights because DTP PCBs can't be used.
Goal of this LED was to reduce cost compared to CSLMN1 which has isolated ceramic base (probably expensive aluminum nitride).
This LED has no ceramic base, die is attached directly to metal cathode pad, so structure is very similar to low cost mid power LEDs, that's why thermal resistance is somewhat lower, but at cost of not having isolated thermal pad.
In the other news, Osram updated datasheet for CSLNM1.TG, flux bins are "shifted" by one bin up, so 7N bins can be expected soon (until now 6N bin was on 100% of reels from my experience).
I would love to see equivalent performance in the more standard footprints. The upcoming CREE XP-P would be ideal in that respect, though I don’t think it’ll compete with the Osram’s overdriven.
For now I’m happy with these in single mode DD (basically driverless) committed throwers with forward clickies. I just replaced the WF1 in my Convoy M2 and running it DD. Seeing 91kcd in a 31.5mm budget light, which was a frigg’n nightmare to focus btw, and that’s up from 78kcd with the NM1 3030. Always wanted to hit 100kcd in this light, maybe next year? lol
I just so recently did a build using a CULPM1.TG (HX Boost) with an 8 Amp driver (the Convoy model for such emitter - link). Using a PLB 26650 / 5000 mAh cell (measured 14.4 mOhms w/ YR1030 Battery Tester) I got 24,700 Lux (converted to ~ 800 lm) on turn on. The beam is an angry blue to violet. Tailcap draw is 7.89 Amps.
Didn’t want to push this further, I toned down the amps by using a higher IR cell - Sofirn’s 5500 mAh at 45.7 mOhms IR. Tailcap reading at 6.16 Amps and 32,060 Lux output. The beam is rather cool white but not angry. The Candelas clearly show the LED was overdriven: 41 kCd at 8 A vs. 71 kCd at 6 A.
Can’t figure what goes. Should be able to handle the 8 amps and produce some 1200 (expected) lumens. As is (w/ the Sofirn cell), about 1050 lm; bearing that I didn’t calibrate my lightbox with Maukka lights but my own which do correlate with some of the published data on the forum.
This was a test run as I planned to reflow the HX Osrams to a Sofirn SD01, a triple w/ regulated output (so I’ve been told by Barry).
I don’t see the CULPM1 on their AE store. Link to what you bought? And I’ve always been suspicious of the white flats they had. They have an extra weird grey printing on the surrounding silicone that isn’t on any others I’ve seen.
They could have been real Osram preproduction versions or rejects that got leaked into the market, but who knows.
Simon is the only source that I personally know of that has trustworthy HX available that’s on the warmest end of the CCT binning available. Maybe Led4Power when he reopens in a few days.
Found them at Mouser.
The mouser batch is a much lower flux bin than Convoys