Thanks for the data sheet welight and thanks for bringing those charts together Led4power. It is unfortunate that the cslnm1 āhandles heatā better than the XP-P. I was hoping the latter would do slightly better than the cslnm1 in that area and be able to be overdriven slightly more. The data sheet has bad news there. The good news is that if we can get top bins then it will still be close with a better color temperature.
The output curve sees to peak at ~225%
Even the best bin only does 400lm at 100%, so max would be 900lm best case scenario.
Still definitely worse than the CULNM1 unfortunately (4040 size), and probably also worse than the CSLNM1 (XP size) when you take into account thermals.
yup! or 4 of them in a KR4 or D4. I just sold my beautiful brass d4v2 with W2 because i couldnāt justify the 6500k tint any moreā¦ Itād be awesome to have similar range in a 5000k tint!
1.05*1.05 mm die though, so itās going to need some miracles to compete with the white flats on brightness alone. Likely lower cost, better availability, 5000K cct, and 3535 footprint are a big win though. I like how the surrounding silicone pour is below the plane of the phosphor. This should make for cleaner beams / less artifacts. 3A vs 3A, it should hold itās own. Looks to be not much room for overdriving. Letās hope weāre wrong about that somehow.
It has a pretty high forward voltage. The 219b/sst-20/LH351D have a forward voltage under 3.3V at 3A. The Xpp has a forward voltage of over 3.6v at 3A on the datasheet. This should be a fet capable emitter but I donāt see it going much over 800 Lumens even when overdriven.
As soon as one is available at reasonable cost Iāll test it and post results. Latest datasheet only shows U5 bin (360lm) available but in all CCTs. Hopefully 5000K rolls out soon and isnāt puke green.
Edit: The Vf looks to be nearly identical to the Osram Black Flat S (HHL532.TK). Running DD from an LG H26 I see a max of about 4.95A in a super low resistance build. So these should run nicely off of 3500mAh 18650s and 5Ah 21700s
I got 3 XP-P emitters in the mail today. Will post test results soon, but initial eyeballing says that our predictions are right. Not much headroom here. 3A lux reading was 1350, peak was 1500 around 4.25A (roughly). I ordered the 5700K (lowest in stock). Tint is purplish from the bare emitter. Check back laterā¦
The Vf on this thing is crazy high. Hereās a test comparing to all the Osrams that I have.
Put one in my Jacob A60. Beam and color are very, very nice. Will get kcd numbers shortly and edit this post.XPP yielded 224kcd. CSLNM1 (MTNe) did 233kcd, HHL532.TK (mouser) did 278kcd. Guessing this will slot in between, but nearer the NM1. For having 10% larger LES, this is a nice number.
Thanks for testing.
Difficult to say what this led adds to the CSLNM1, it may be a bit more efficient at lower currents, but less than seems because of the higher Vf. But if it comes in a range of attractive tints that could convince me to use it.
I think it wouldāve been a hit about a year or two ago before 3030 and 4040 mcpcbs and gaskets were widely available and when DD FET drivers were king. Nowadays itās not really doing anything special. If the 5000K comes in a bin or two higher flux, then itās a different story.
Measured that A60ā¦ got 224kcd. So not quite hitting the NM1, but close enough. I feel like the hotspot is noticeably larger, but I canāt be sure since I only have one of these lights.