Cree, Luminus, Seoul Semiconductor, and Nichia LED comparison

Sorry, I came right to the last post and didn’t noticed you had already added to your thread.

useful…very useful…thank you. merry x-mas

Ok, I think it's done unless there is anything else I should add. (Maybe Nichia 219)

I just got my very first Nichia 219 flashlight today.

anything that is red or green please. xp-e, xr-e, pt-54, cbt 90, sst-90, luxeon, led engin.

ho…ho….ho….meeerrryyy chrismaaaaas.

scaru, nice work, but you are wrong about the bond wires. Those are, as it says, the small wires running to the die. But I have no idea about the grid..

Great info scaru, I wish they still made the EZ900 LEDs :frowning:

Nichia 219 added!

Changing it now, thanks.

Dereelight is still installing them in their flashlights.

I read that those lines on the die are called current-spreaders.

Scaru, a couple quick things.

–92CRI 219s are ~4500k, rather than 5000k.

-the XP-E output versus drive current graph is for a green XP-E. I recommend making a note of that in your commentary.

-XR-E typically has a higher forward voltage than newer LEDs (namely XP-G, because Cree recommends both emitters are fed a max current of 1.5A) for the same drive currents. At higher drive levels, the XR-E’s Vf increases dramatically compared to the XP-G because the latter is more efficient (a lower Vf yields lower wattage at the same forward current).
:wink:

Nicely done Scaru. Everyone new to LED flashlights should read this. It is the best compilation yet of all the commonly used LEDs.

Thanks for all the compliments guys, I figured this would be a good thing to have so I made it. This along with the tint, brightness bin, CRI thread ought to cover most of the newbie questions about LEDs.

I just wish there was something like this when I joined up. ;)

This! It should save inquisitive members a lot of searching and reading.

Just fixed those things Slim, Thanks!

Most of them that Illumination Supply has been shipping lately seem to be in the 4000K-4200K range. Units from earlier batches measured in the 4400K-4500K range. Looks like Nichia users get to play the tint lottery along with the Cree users.

Printed & archived!

Oh wow! This is just the sort of thing I’ve been looking for to get my head around the model numbers. The only other thing I would like to see if possible is the data for SSC P7’s or any other model they do worth looking at.

Thanks for the work involved into testing and posting.

SSC P7? and the SSC S7? anyone has seen any data about the Z7´s?

XPG2 High CRI

http://octopart.com/xpgwht-u1-0000-00ae7-cree-19504369

http://www.cutter.com.au/proddetail.php?prod=cut1224

Speak on this?

Scaru - And fantastic thread btw...Sticky!!!!