Is the XP-E the brightest red-orange LED @350mA?

[Cemoi]

Looking at the XP bining and labelling datasheet, I wonder if the XP-E is currently the brightest red-orange LED @350mA. The highest flux bin (P2) puts out 67 lm.
The highest flux bin for the same LED in red is only 52 lm, so the red-orange one is probably the best choice for a bicycle tail light, even more so as I read somewhere on CPF that the human eye is more sensitive to red-orange than to pure red.
Do you know any brighter red-orange LED?
And where can a P2 red-orange XP-E be purchased without needing to buy a full reel?

 

[mudman cj]

These are some of the brightest ones I know of that are readily available in quantities of one.

 

[Cemoi]

Thanks mudman. Strangely this one is labelled as "amber" by Osram, whereas its wavelength is 617 nm, which Cree classifies as "red-orange".
Amber in the Cree terminology ranges from 585 to 595 nm.

Do you know where I can find a MCPCB to mount the Osram Golden Dragon Plus (to practice reflow soldering on my stove)?

 

[mudman cj]

Yeah, I actually ordered some of these when I wanted 'yellow', which is called amber by other manufacturers.

I'm sorry, I don't know where to get MCPCB for them.

 

[Whineyweim]

Cemoi - I might be able to help you with something for your practicing. Drop me a PM.

 

[Cemoi]

These are some of the brightest ones I know of that are readily available in quantities of one.

I've just realised that this product is listed as "Restricted availability" on Mouser website, i.e. "The manufacturer does not presently allow us to sell this product in your region.". I get the same information using either Mouser United States or the European version of their website.

So I think I'll stick to red Seouls for now, which are available from Mouser, have a very low Vf (<2V) and for which I already have optics.

Unless somebody knows a source for red-orange XP-Es?

 

[space]

...The highest flux bin (P2) puts out 67 lm.
The highest flux bin for the same LED in red is only 52 lm, so the red-orange one is probably the best choice for a bicycle tail light, even more so as I read somewhere on CPF that the human eye is more sensitive to red-orange than to pure red.
...

The lumen scale is based on the human eyes sensitivity, so the reason for the red-orange having 67 lm as opposed to reds 52 lm, is mostly due to the eyes different sensitivity at those wavelength. So if both were 60 lm, they would appear equally bright.

space

 

[rav]

Cemoi, I have some red-orange XP-Es. PM if you're interested.

 

[mudman cj]

I've just realised that this product is listed as "Restricted availability" on Mouser website, i.e. "The manufacturer does not presently allow us to sell this product in your region.". I get the same information using either Mouser United States or the European version of their website.

So I think I'll stick to red Seouls for now, which are available from Mouser, have a very low Vf (<2V) and for which I already have optics.

Unless somebody knows a source for red-orange XP-Es?

Actually, I may have given you the wrong part number. I think I actually bought these instead. Though I don't know if they will be restricted for you either. :shrug: When I put them in my cart I don't see anything about restrictions. Are you outside of the US?

 

[Cemoi]

I actually bought these instead.

This is the Golden Dragon, whereas the first reference you gave me is the Golden Dragon Plus, slightly brighter.

When I put them in my cart I don't see anything about restrictions. Are you outside of the US?

Strangely I see no restrictions for both references, if I view the Mouser pages from my home computer. I see this restrictions only from my computer at work, despite choosing to use Mouser US. Maybe a cookie somewhere telling I'm outside the US, from earlier visits to their European store?

 

[blasterman]

Why are they restricted may I ask?

I use 3-watt LEDs for effect lighting, and I've been using K2's simply because of narrow optic choices. They're around 620nm and at 350mA painfully bright. They don't match the uber_high flux bins of the ones above though.

Obviously for mobile applications you want the most efficient emitter.

 

[Cemoi]

Good news: the highest flux bin for red-orange XP-E (P2, i.e. at least 67 lm @350mA) is now available at Cutter.