Cree changed production process for XP-G2 emitters!

[Flashy_Mike]

@BobbyMK

I also ordered few S4 2B from IOS yesterday and one of them is goin in to B158 as a replacement of a dead S2, i measured 292kcd with the S2, cant wait to see the results with the new S4 2B led. I hope on at least same performance as the old led.

I put one of my new S3 3D into a B158 with A17DD LD-2 and only measured 230 kcd.

[Pöbel]

@luminarium iaculator

Again,

Maybe with dome on is the real “new xpg2s42b thing” with bigger die.

But this emitter has reputation of furthest throwing emitter on the planet with dedomed method.

I am not newb in this since I exclusively work only with XP-G2 emitters and I certanly can see difference in tint and output even before they will be tested at Djozz place.

In dedomed mode Expect more than 30% lux drop with them with ugliest green tint you seen in your life

I made pills with 3 different dedome methods used in same host. I know previous results with real ” old xp-g2 emitter” and I know what I am getting now. That is also very good test to me. But I will certainly send them to Djozz tomorrow after Easter monday and I don’t want to use them in my flashlights ever again…

I think we all agree that these new XP-G2 suck for throwers. But except from buying “old” stock there is probably not much we can do

[luminarium_iaculator]

Oh I am desperate now

Guys If you want to sell me old stock of real XP-G2 S4 2B emitters please PM me I will take them…

[Cula]

What would be the next closest XP-G2 compared to the old XP-G2 S4 2B? These new ones are on the way to me from IO and I won’t use them.

[luminarium_iaculator]

I would say XP-G2 S2 1A with 10-15% lower performance than The King.

[Mitko]

@luminarium iaculator

I would say XP-G2 S2 1A with 10-15% lower performance than The King.

Not exacly, some S2 1A- 0D are very good btw, my best C8 tops 190k mcds, the emitter inside S2 0D runs at 5 amps …the tint isnt good for hunting though but its gread for overall use, 5500k pure white after DD

[luminarium_iaculator]

Not good for hunters? How it looks dedomed?

XP-G2 S2 1A is very similar in tint to the king.

[Mitko]

I am speaking of FT ones, they are like 0d or something, believe me i bought dozents of those, the tint is like 5500k pure white( after DDing), the former king has like 1000k lower tint

Yesterday i DDed 4 pcs, 2 of those run at 4.5 amps

P.S

Here, AR IOS glass were used, the difference can be seen even on the photo

[luminarium_iaculator]

Mitko if they are same XP-G2 S2 1A i ordered from KD they will be more than good for hunting. But yes… Maybe little more greenish dedomed (aspheric lights) in tint than old XP-G2 S4 2B

I like that tint. Really not to bad for hunting either.

Anyway to get back on topic: It seems Cree made larger dice or larger phosphor layer on newest XP-G2 emitters( i found that in S4 2B bin, Flashy Mike found that in S3 3D bin) which has negative influence on de domed versions like ugly green tint shift and lower output.

Edit:

Mitko took another picture this is C8 host XP-G2 1A on the left and new f ducked xpg2s42b on the right

added in first post.

[FmC]

If someone can work out a successful dedome method for the 3rd gen Oslon, then the ‘crown’ may change hands.

[luminarium_iaculator]

Djozz said it can’t be done with gas or hot dedome. I used pry off method on Oslon 4715AS emitter and that worked. But it does not have phosphor layer it is IR 850NM emitter.

Maybe gas or thinner method Mitko suggested in this thread: A Perfect Dedome?

[FmC]

@luminarium iaculator

Djozz said it can’t be done with gas or hot dedome. I used pry off method on Oslon 4715AS emitter and that worked. But it does not have phosphor layer it is IR 850NM emitter. Maybe gas or thinner method Mitko suggested in this thread: A Perfect Dedome?

I gave it a go a couple of weeks back. I think it's worth another shot, maybe with slightly different methods.

[djozz]

Perhaps a cool 70CRI Nichia 219C would be a better candidate for dedoming than the Oslon Square? We just have to find a source for them, sofar I have just found 83CRI versions.

[luminarium_iaculator]

@djozz

Perhaps a cool 70CRI Nichia 219C would be a better candidate for dedoming than the Oslon Square? We just have to find a source for them, sofar I have just found 83CRI versions.

Anything that could be better or same in performance as good old XP-G2 S4 2B dedomed would be wonderful.

So far alternative to old king is his brother XP-G2 S2 1A as Mitko mentioned

But he also mentioned that FT sends them on a random base( whatever they got in the store) but some orders seems to be very good- plus the price is 1.2$ for 10+

[giorgoskok]

Have you checked mtn’s stock if they are these you want ?

CREE XP-G2 S4 2B LED on Noctigon 20mm MCPCB

[luminarium_iaculator]

All stores could have bad (new) or good (old) XP-G2 s4 two bees

I am currently checking with 3Tronics

[grayski74]

Wish this thread existed about six weeks ago.. DD one of my xpg2 s4's back then..

It is horrible. It's still in my uf602c as I can't be bothered to swap it out ATM. Green as the hulk.

[luminarium_iaculator]

@grayski74

Green as the hulk.

Nice comparison man. You at least did not wasted over 100$ like I did Don’t worry… Be happy

[kowshak]

You’re going to need bigger reflectors to get the same throw with a larger die

[grayski74]

I feel your pain luminarium iaculator… That’s a lot of money to spend on what seems to be slightly inferior batches of xpg2s from Cree lately.

Maybe they are just trying to get us to buy xpl hi leds now.