This is not entirely how it works, manufacturers bring out new models as well as update existing models. Some of the existing models go obsolete at some point, but while it goes without announcements from Cree, the XM-L2 still gets new tints and updated bins every now and then.
At least some of you look for “rosiness” in your leds. While I understand this is due to “human preference” and maybe other bits and tips (like ;-) rarity), rosiness is a deviation from the black body locus and thus it still is wrong. Cyan dip and “green hill” shape in led output curves have to do with this.
Consider that the Yuji is specc’d at 3200K, 200K above the 3000K SST-20. Even assuming both emitter’s nail their delivered CCT, I know my 2700K and 3000K samples from Mouser do, then the SST-20 will appear 200K warmer then the Yuji. I know Cree XM-L2’s tend to bias 150-200K high which might explain why the two CCT look so similar. I know my two 2700K XM-L2 samples hit the 2900K range, and my 3000K emitter from Simon hits around 3150K. That being said, the XM-L2 is a much nicer emitter the something like the XP-L2 color wise, and the 3000K varient emulates a well driven halogen quite nicely.
I’d love to get some of these but I don’t need alot of them and their shipping is a little high. Guess I’m used to dealing with Arrow.com and their free overnight shipping. I’m spoiled in that regard. Looks like a great bin.
since you mention halogen, does this resemble halogen at regular use, or one of those overdriven headlamps of the last decade? overdriven halogen stuff had the best colour in my opinion. slightly less yellow.
by the way, if any Hungarian would like to split an order from mouser of these I’d be up for it.
The 3000K XM-L2 90 CRI would be a closer match to a slightly overdriven halogen with its slightly higher CCT then the SST-20, but color quality-CRI/R9- won’t be as good. It’ll still be respectable color quality, though. I believe Mouser also has the 3500K SST-20 95 CRI, but that’s closer to stock fluorescent.