FS: XP-G2 S2<------ Bin emitters on Copper MCPCB.

Hey all,

I finally got my batch of the S2 2B 5700k emitters in if anyone is interested.

I have them available on 20, 16, and 10mm SinkPads.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&amp;item=201025765329&amp;ssPageName=STRK:MESE:IT

Graphs courtesy of member Match.

This looks very interesting.

Could you please tell me what is difference between CREE XP-G2 R5 2B 5700k(on Noctigon star) and your CREE XP-G2 S2 5700k.

I mean will it be brighter than the other one upon de doming is performed?

Sorry for asking so unprofessional but I am not pro. I am just guy who knows to slap things together.

I noticed sometimes even 5-10%(and more) difference in brightness among same emitters(above mentioned XP-G2) from the same batch

This sometimes is driving me crazy. I want constant performing emitters. So I am very interested if there can be any benefit from your CREE XP-G2 S2 5700k.

There is some variance in the same bin but S2 should be about 7% brighter than R5.

If asking questions make a person "unprofessional" then I never intend to become one. :)


Your of course right there is always some variation between emitters in the same bin. If I understand it correctly the next bin up is guaranteed to be brighter than anything you find in a lower bin.

Sure you might get luckey some times and get an R5 that tops out at nearly S2 level, but typically a full bin is enough to be noticeably brighter. Of course it would be nice if each emitter was individually labeled, but then again this way there is always a chance you could strike gold with an emitter that tops out near the S3 category. WOOT!

did u get the LED from Cree ?

2Bs are not the best choice for dedoming, they're too nice as-is. Stick to the 1As for dedoming.

No, I ordered from an authorized distributor. I have tried to order directly from Cree (even in full reals) and they pretty much blew me off. The lady I spoke to on the phone said they "weren't looking for any more distributors at the time"

Thanks for your answer Vestureofblood,

If I only knew that before I ordered a lot of above mentioned R5 XPG2...

So if performance difference is really 5-7% this means 12500 - 14000 more candela in my flashlight..., and there are still plenty of flashlights that can not throw this numbers so it is great improvement over R5 XP-G2.

Damn... I am crazy now I did not new this data before :(

Comfychair,

I tried de doming both of them (batch from FT and IO) and 2Bs have much nicer NW tint than 1A from FT.

They are both in upper neutral white scale but 2Bs are more warmer.

I will order one from Vestureofblood to see difference.

If you want a nice tint then leave the dome on. Are there really people out there who want a neutral/warm white aspheric thrower? :sick:

sure, dedomed xml2 3c is great behind aspheric

We are talking about XP-G2 S2 2B here.

Since I own all available premium aspheric flashlights(exepct Saablusters) and I have tried almost every possible emitter in them I will just give my opinion that the best emitter in aspheric I tried so far is XP-G2 XP-G2 R5 2B de domed. It is neutral white emitter when dedomed and 5700k stock.

Emitter from FT XP-G2 1A (6100) has greenish tint beam after de doming but XP-G2 2B is something different so I am really looking forward to de dome Vestureofblood one.

How does XP-G2 2B de domed looks? Look here:

I have put a dedomed xml2 6A1 80cri led in a (admittedly small) aspheric thrower, I love it

was that for me? i guess i wasn’t talking to we (you?), and was responding to comfyc’s comment…

anyway, i don’t own any premium aspheric lights so i guess my opinion of tint is void :crown:

no really though, comfy, a warm aspheric beam ‘seems’ to cause less blinding back scatter in fog/mist, and I generally use my aspherics around water, so I like them warm/neutral

what light is that?
xp-g2 dedomed?

White cree leds don’t have voltage bins?Why I didn’t notice this before? :~
There is logical possibility that higher flux bins leds have higher voltage(lm/Watt bin would be more fair),so I suspect that S2 bin leds have even higher Vf than average xp-g2,but since there are no voltage bins,measuring is the only way to find out.

Luminarium,

Thats a great picture I wish my camera could take shots like that.

This was taken with generic olympus camera(worth 50$) with auto settings holding camera in one hand and flashlight in other (hold still as possible and take deep breath)

The only time I have ever pulled off a shot like that was in heavy fog.

Look at the rest of the photo, it is heavy fog.