Hi, I know this emitter is used in a lot of olight lights branded as P9 led, but it seems to be very unpopular in the modding cultur.
It has the same bin as the LH351D but only 3.07V vs 3.28V Vf and 17% more throw in a carclo 10193 and the same flux, Vf and throw as the XM-L2 new revision. And because the Xml isn’t available in a high bin, this led should be the king in it’s size class.
It has a clean beam, no tint shift, but is it more likely greenish?
What speaks against it aside cathode thermal pad? Has someone dedomed it, does it lessen green, in case it was before? I do not want to over drive it and am interested in the 5000K option only.
I’ve yet to ever see a manufacturer use Osram P9 in a claimed high CRI application. The beam is fine, as you say. Apparently there is a 90CRI part? I’d still probably swap for 519A.
Edit: looked at it. The cathode and the “thermal pad” are both the cathode. In most of our lights, we need the driver to be between LED- and battery-. If that cathode shorts to the host via DTP MCPCB, then it’s all direct drive all the time baby
Unfortunately there are reports of it being quite green. With poor tint and nonstandard footprint (which makes both soldering and centering inconvenient), there seems to be no reason whatsoever to favor it over the 519A.
I’m wondering if the “warm” Wuben E7 uses it? Iirc it says it’s high cri but still says Osram P9. I had chalked it up to sloppy copy-paste of the cool white version’s info.
On high mode the CRI is 89 and R9 49…that’s worse than most LH351Ds and on par with some bad XP-G3s. +0.0094 duv isn’t even ANSI white anymore. Whoever that was responsible for selecting a high CRI emitter, they had one job…
Welcome in Osrams world of extreme-widespread color groupings. It is nearly impossible to get exactly color-binned emitters from them. (At least not from wholesaler like Mouser. They only offer the widespread color groups as shown in the datasheets.)
From my experience, almost all ‘high CRI’ emitters from Osram were green. Only my old CQAR.CC 3500 K were in good tint, without any green in it. And these are almost seven years old.
I recently bought a Lumintop Apollo V2. According to the description on the Lumintop Website it is „Equipped with 4 high CRI 90 Osram LED, OSRAM GW PUSTA1.PM LED“. The tint was just green and ugly. I sold it straight away. For me the Osram P9 issue is settled.