Commonly Used LED Emitter Index

[saabluster]

gopajti those are some incredible shots. You must do that for a living or something. Thanks!

[csshih]

wow!, gopajti. those are most excellent pictures!
and I was going to try to take some pictures to replace the "lesser" ones.. wow! Thank You!

[kramer5150]

Wow great pics!!... I've had an MCE light for over 1.5 years and had no idea there was that "much" going on in there.

IMHO it would be nice to leave it sticky'd here in LED flashlight forum.

[csshih]

Very useful thread by csshih, with some excellent pics added by gopajti in the post just above this one.

I'll leave the thread here in the LED Flashlights section for a while, conscious that some members don't visit the LED (emitters) section too often. (why not, guys? )

I'm adding it to the "Threads of Interest" stickies both here and in LED.

Thanks, David!
I would like the thread to stay in the LED flashlights section, if possible, as I think the "drive-by" users just browsing through tend to stay away or not see the other sections.

although.. the LED section is, indeed, a fun place to look around.

[RAGE CAGE]

One of the best informational threads here on CPF- Thanks.

[nfetterly]

Fantastic! Enjoyable read - I was looking for some information like this about a week ago.

[erehwyrevekool]

Thanks to csshih and gopajti for the pics, great job really useful!

[JulianP]

Great guide, csshih. I have a question: Is there a way to distinguish between XR-E's? I have an XR-E R2 flashlight which is dimmer than all the others, and I wonder whether the supplier sent me an XR-E P4. They all look like the XR-E that you posted.

Thanks.

BTW - I can't find datasheets for the R2. The Cree website has specs for all types (bins?) up to Q5, but no R2.

[csshih]

Hi Julian,

no, there is not the older generation P4s had only 2 bond wires if I recall correctly, but all the new ones look identical.

[JulianP]

Thanks, maybe I've just got a dim R2.

[Jack Reacher]

WOW! This is a great source of info for someone just getting into LED flashlights. And a pic does indeed convey a thousand words.

Also, I really appreciate the major efforts people-in-the-know take to enlighten folks like me!

— Cheers, Jack.

[Budman231]

Awesome thread and pics. LED Porn. Love it nice job.!

[Ian2381]

Can anyone tell me where to buy a 14mm base XRE neutral LED?

Thanks

[csshih]

you'd be better off posting that in the LED section, instead of here.

[AardvarkSagus]

Wow, some instruction even for me. I thought the LuxV was a quad die LED similar to the MC-E and P7. Instruction around every corner.

[Speedball]

So that's what it is all about, thank you.

[HarryN]

Wow, some instruction even for me. I thought the LuxV was a quad die LED similar to the MC-E and P7. Instruction around every corner.

Hi, The Lux V is / was the first quad die package that I am aware of. It was also the first package to break the 200 lumen (rated) barrier. It is still the only package that contained 4 die that were carefully matched for Vf and output to each other. The market price was aroud $ 50 / each for those at one time. Compare that to a 200 lumen Rebel single die pacakge from the same company for a few dollars today. That is why I laugh when people complain about blowing LEDs now.

The Lux 1 is really the pacakge that started off the wide spread use of LEDs in flashlights, followed by the Lux III, which I consider sort of an enhancement of the Lux I.

Virtually all of the Philips Lumileds power LED products use 1x1mm2 die, just different generations and sorting of them.

Cree introduced their power led products a few years later, taking about 2 years to become competitive in efficiency and output. I have some of those early ones and and the difference between those and the Lux I was pretty visually obvious, even to the casual observer.

It has been interesting to watch the power led guys drive the technology and market forward.

[AardvarkSagus]

That's what I thought. Just in the initial post this is the image of the LuxV and I wasn't seeing quad die:

[Chrontius]

You can see a liiiitle cross but they put the phosphor over top of the dice, so you can't really tell them apart unless you look close.


Also, don't forget the Nichia 083 and 183 - the current favorite for high-CRI things like the Sundrop around here.

[boboweb]

I have simple question ! Is there XR-E R2 LED ? If we trust in official CREE data sheet such LED doesn`t exist ?!

http://www.cree.com/products/pdf/XLamp7090XR-E.pdf

[Tally-ho]

If we trust in official CREE data sheet such LED didnt`t exist last time they updated this data sheet ?!

Have a look at the bottom of page 2: Cree, Inc.
Copyright © 2006-2009 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree,

The last time it was updated is mar 15 déc 2009 09:53:48 CET ("control" + "i" in ubuntu (french version)) that is Thuesday, December 15th 2009

[wintermute76]

Great post! Have to add that to my bookmarks.

[nanotech17]

Great post! Have to add that to my bookmarks.

sorry out of topic a lill
Hi,are you the same wintermute that have been lost & found

[Minjin]

Just saw this thread (linked in another one). Excellent resource. I can understand not having the old emitter info on there but it would still be neat to see and directly compare to what we have today.

Any chance we can get the Bridgelux LEDs on there?

[csshih]

not sure about that ! they don't seem to be commonly used in flashlights!

[andy_a07774]

Brilliant Thread

[The Berr]

Really interesting thread. Now I need to know if anyone has worked with the Nichia NCCU033 which is a 3W 365nm UV led. If so, could you please contact me.

[Kestrel]

Really interesting thread. Now I need to know if anyone has worked with the Nichia NCCU033 which is a 3W 365nm UV led. If so, could you please contact me.

Hmm, I don't know if that would be considered a 'commonly used' LED though? You might want to check out the LED emitter subforum, which I believe might be a better venue for the information you are looking for.

[The Berr]

Thanks for that I will.

[raven2751]

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