Found my grail emitter!

JaredM · 2019-02-28T09:30:39.000Z

XMLBWT-00-0000-000UT20E7 Cree LED | Mouser

XMLBWT-00-0000-000UT20E7 Cree LED High Power LEDs - White White 3000 K 90-CRI, XLamp XMLBWT datasheet, inventory, & pricing.

I believe this is the one.

mattjk · 2019-02-28T10:00:43.000Z

People still using XML2 then, released in 2013, but development has certainly plateaued!

djozz · 2019-02-28T10:45:48.000Z

mattjk:

People still using XML2 then, released in 2013, but development has certainly plateaued!

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.

Geuzzz · 2019-02-28T11:38:07.000Z

Would love to have these emitters for some lights, but shippingcost is killing it.

Barkuti · 2019-02-28T13:03:26.000Z

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.

No need to cry me a river, a brook is :-D enough.

^:)

cetary · 2019-02-28T14:02:03.000Z

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.

Bob_McBob · 2019-02-28T17:04:52.000Z

It’s worth pointing out this is a viable option for all the old XM-L2 Zebralight models if you like 3000K and you’re up for a challenge.

Geuzzz · 2019-03-02T20:42:21.000Z

If someone (preferably Dutch) wants to split an order of these to reduce shippingcost just PM me.

djozz · 2019-03-02T21:51:15.000Z

I would like to measure the actual tint before buying these, I have been disappointed by a tint more than once, but that is not how it goes of course.

HONDARIDER · 2019-03-02T23:58:10.000Z

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.

Rufusbduck · 2019-03-03T05:13:56.000Z

Barkuti:

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.

No need to cry me a river, a brook is enough.

Until they come out with an led capable of a balanced spectrum we’ll just have to muggle along choosing between various “wrong outputs” won’t we.

cetary · 2019-03-03T12:49:37.000Z

I thought the Optisolis already hit the black body nearly perfectly?

Geuzzz · 2019-03-03T13:04:51.000Z

djozz:

I would like to measure the actual tint before buying these, I have been disappointed by a tint more than once, but that is not how it goes of course.

It’s disappointing most of the time, but I really used to like the 5D xml2s.

Nowadays most of my lights have 3000k sst20’s or sliced dome sw40s and the 5Ds look to cold next to them, but still have verry consistent tint with little shift or green.

matula · 2019-03-08T23:40:25.000Z

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.

cetary · 2019-03-08T23:53:55.000Z

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.

NWoodsman · 2019-03-09T04:12:31.000Z

Well, after getting my grail emitter, I ordered 3 more. Unfortunately it’s obvious they are cut from a different reel.

They are noticeably pink tinted with magentas. Compared to the original emitter that inspired this, I don’t like them and would not recommend.

Be aware of Cree binning and Mouser orders in this regard (I was aware), the Cree bin designation liberally allows for emitters all over the ANSI spectrum, above and below the blackbody curve.

Looks like SST20 3000k is the nearest match for the emitter.

Bob_McBob · 2019-03-09T04:16:20.000Z

Pink tint sounds pretty good to me.

SKV89 · 2019-03-09T04:26:48.000Z

Don’t like magenta but I do like pink tint. If I know for sure they will be cutting from the same reel, I would buy some.

ferthur · 2020-01-07T14:43:53.000Z

NWoodsman, unfortunately the E7 bin is rather large, and you’ll need to specify a tint if you have one in mind. 7D2, for instance, is ~3000K and just below the BBL.

That’s from the Cree binning PDF, page 9.

Edit: don’t mind me, just realized this thread is very nearly a year old. But perhaps someone else will find this useful.

ma_tumba · 2020-01-12T12:04:50.000Z

Those who like “pink” at and below 3000k may want to consider nichia e21a. While I really hate pink at higher CCTs, those warm nichias are fantastic