Commonly Used LED Emitter Index

[csshih]

if anyone could help me identify this led, as i have not had much luck



i kind of looks like a blob of clear glue has been badly dropped over the emitter.

reason i ask is i'm intending to replace it with a better led. (it is a very cheap MTB light)

thanks in advance

dang... that LED is very very familiar.. the name escapes me at the moment... time to search up some of my old posts...
I can't find which exact LED it is but it's a multidie one.. a very low end one that does not come close to any cree power LED.
I got one couple years again in DX SKU 2124... not a good light at all.

Craig

[raven2751]

thanks csshih i am kind of wondering if i could put this led http://www.dotlight.de/products/en/L...-Star-PCB.html into the torch without making any other changes

[csshih]

thanks csshih i am kind of wondering if i could put this led http://www.dotlight.de/products/en/L...-Star-PCB.html into the torch without making any other changes

driver wise, it should work. I'm not too sure about the forward voltage of the old LED, but they should be similar.

But you're going to have trouble with fitment - the XR-E is rather large compared to the old emitter.

-Craig

[Imon]

Nice update csshih, I was wondering when the XM-L would be added to the database.

[csshih]

Nice update csshih, I was wondering when the XM-L would be added to the database.

thanks, that was actually a re-update, as all updates since november were lost.

-Craig

[raven2751]

thanks for the advise, decided to go for the XP-G, as when comparing them the XP-G looks to be a better fit.

[raemon]

Great work indeed. Very, very helpful. I have absolutely no idea there were so many different types of LEDs for flashlights.

[yliu]

Thanks! great work

[lyklyk616]

Can any of you guys please tell me what L.E.D does my SureFire LX2 Lumamax !
Thank you very much !
I really wish I have the fund and time just like you guys !

[lyklyk616]

The upcoming SureFire UDR Dominator has the most powerful L.E.D. ever !
A single-die 2000 lumens L.E.D. !

I wonder what L.E.D.is that ?

[csshih]

Can any of you guys please tell me what L.E.D does my SureFire LX2 Lumamax !
Thank you very much !
I really wish I have the fund and time just like you guys !

Cree XR-E, If I recall correctly.

I am pretty sure the UDR uses a sst90 due second hand descriptions
If I were at SHOT show I would have been able to tell you immediately.

Craig

[Aaron123]

wow~~it is great,i know some,but.....
learn a lot

[Vicepres]

yup! I hope this helps people.

PHENOMENAL JOB, csshih,

Noob, trying to understand the working side of these incredible lights.

In researching various lights on this forum, a knowledgeable Member, (who is trying to help) often offers " thats a XR-E or XP-E or another emitter type" that is OLDER technology and the later model is a XP-G (or xxx), try an obtain that Model for your application.

In searching for the evolution and manufacturers date of these emitters, this leads me to several pages of good information, but I cannot find the exact date/year these were introduced. I realize I'm trying to simplify and there are other factors.
Did I miss something? Do you look for characteristics of the emitter rather than the Model year of manufacturer?

When were these made or replaced by the "Latest Technology"

Cree:
XR-E (R2)
XR-C (P4)
MC-E (M)
XP-E (R2)
XP-C (Q4)
XP-G (R5)
XM-L (T6)

Phillips
Luxeon l
Luxeon lll
Luxeon V
Luxeon K2 (V)
Luxeon Rebel

Seoul Semiconductor
P4
P7
Luminus
SST-50
SST-90
Ostram Opto
Ostar 96 Die)

Thank You

[csshih]

Before I go and research dates - this is the order I believe they are in.

Luxeon I
Luxeon III
Luxeon V
P4
Luxeon K2 (or was it after the XR-E?)
XR-E
P7
MC-E
XR-C
MC-E
Luxeon Rebel
XP-E
XP-C
XP-G
SST-50
SST-90
XM-L

time to research.
Craig

[cloverhsu7]

thx 4 sharing

[miphz]

useful thread, i love it ...

bookmarked for future needs

[Hwy115]

XM-L or SST which is the better LED?
Thanks,
Steve

[csshih]

sorry, haven't had to do the research. too many essays lately!

it's usually hard to say which LED is better, but I can say, the XM-L is more efficient, but the SST50 is more robust.

Craig

[yliu]

XM-L or SST which is the better LED?
Thanks,
Steve

From what I know, the XM L is better if you are gonna drive it below 3 Amps. Both SST 50 and 90 can be driven harder than the XML.

[angela218]

amazing, soooo many i wanted, vote for a sticky.

[bshanahan14rulz]

beautiful shots, great compilation. Thanks to all contributors!

[FX-32]

Great job!
This is very useful, Thanks!

[Epsilon]

I made a picture some time ago, to compare ledsizes. Maybe a useful addition to the OP?

[AFAustin]

Great thread! Thanks so much, csshih.

I am trying to determine if the emitter in a Peak Eiger is a Rebel (older Eigers) or an XP-G (newer ones). If there is a bit of green visible on the board, does that mean it has to be an XP-G?

Thanks for any help,

Andrew

[csshih]

Hi Andrew,

In your case, I think so - though, the rebels have distinctive indentations on the dies (assuming they're the newer TFFC chips) which should help distinguish the emitters from the XP-Gs.

Craig

[AFAustin]

Craig, thanks for your reply and info. The Peak Eiger in question has an optic that makes viewing the details of the emitter itself difficult. But, I can make out a bit of green on the periphery, so I guess it's more likely XP-G than Rebel.

Thanks again and regards,

Andrew

[csshih]

Hi Andrew,

I find if I look at optics straight on I can usually see the current spreaders of Cree LEDs. I then count them to find out which LED!

Craig

[AFAustin]

Craig,

Thanks. Forgive my ignorance (non-technical guy here), but the "current spreaders" are the parallel wires across the face of the emitter?

But, sadly, with the Eiger, no can do. It also has a lens that is, well, very stippled, so the emitter just appears as a round yellow golf ball! The wires are not visible, even with my 15x lighted loupe.

Andrew

[csshih]

Hey Andrew,

yep, those are the current spreaders. I guess that`s all we can get without taking it apart.

Craig

[todderic]

Thanks a lot for sharing. Hope it will work.