XHP35

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optntdr13
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XHP35

Am I late to this party or are these new and if so, does anyone have any more information about them? A simple google turned up very few pertinent or relevant results.

atdigikey

Wrathbringer27
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Oh what the heck I just knew about thus when u mentioned it!!!

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Hikelite
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Digikey went ahead before CREE even announcing the LED.

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But WHY is it only 493lm max?? And at 1plus amps???

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DavidEF
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Wrathbringer27 wrote:
But WHY is it only 493lm max?? And at 1plus amps???

That kinda got me too. After all, the Vf is around 11 volts! Something weird going on here!

Edit: Oh wait. The stated luminosity is “at test current” which is 350mA. Still not much, but better.

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Wrathbringer27
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DavidEF wrote:
Wrathbringer27 wrote:
But WHY is it only 493lm max?? And at 1plus amps???

That kinda got me too. After all, the Vf is around 11 volts! Something weird going on here!

I totally second that opinion!!

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Firelight2
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The photos of the LED on their sight look identical to an XPL.

Hank Wang
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Firelight2 wrote:
The photos of the LED on their sight look identical to an XPL.

Photo is for representation only. It isn’t an actual photo of the item. Smile

So, I did the math. They have one that claims to be 570lm at test current. Test current is 350mA. Forward voltage is 11.3 volts. Claimed efficiency is 144 lm/w. Well, 11.3 × 0.35 × 144 = ~570 so it is accurate. I think 144 lm/w is pretty good. It just doesn’t look right at first glance.

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Wrathbringer27
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DavidEF wrote:
Firelight2 wrote:
The photos of the LED on their sight look identical to an XPL.

Photo is for representation only. It isn’t an actual photo of the item. Smile

So, I did the math. They have one that claims to be 570lm at test current. Test current is 350mA. Forward voltage is 11.3 volts. Claimed efficiency is 144 lm/w. Well, 11.3 × 0.35 × 144 = ~570 so it is accurate. I think 144 lm/w is pretty good. It just doesn’t look right at first glance.


So what does it behave like? Xpl with xml2 u4 output?

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Hikelite
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Wrathbringer27 wrote:
So what does it behave like? Xpl with xml2 u4 output?

What makes you think there is any serious difference between XP-L V6 And XM-L2 U4?

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Wrathbringer27 wrote:
DavidEF wrote:
Firelight2 wrote:
The photos of the LED on their sight look identical to an XPL.

Photo is for representation only. It isn’t an actual photo of the item. Smile

So, I did the math. They have one that claims to be 570lm at test current. Test current is 350mA. Forward voltage is 11.3 volts. Claimed efficiency is 144 lm/w. Well, 11.3 × 0.35 × 144 = ~570 so it is accurate. I think 144 lm/w is pretty good. It just doesn’t look right at first glance.


So what does it behave like? Xpl with xml2 u4 output?

That’s what it looks like to me. But, if you look at the photo Hank gave, XPL High Intensity beats XHP35 High Intensity overall, but not by much.

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DavidEF
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Hikelite wrote:

Wrathbringer27 wrote:
So what does it behave like? Xpl with xml2 u4 output?

What makes you think there is any serious difference between XP-L V6 And XM-L2 U4?


Look at Hank’s photo above. :bigsmile:

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Hikelite wrote:

Wrathbringer27 wrote:
So what does it behave like? Xpl with xml2 u4 output?

What makes you think there is any serious difference between XP-L V6 And XM-L2 U4?


The u4 is at 1200lm at 3A? Xpl at 1000lm at 3A? I’m still in the process of learning! :)So if I sound stupid it’s most likely because I am still not learned! Wink

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Hikelite
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DavidEF wrote:
Hikelite wrote:

Wrathbringer27 wrote:
So what does it behave like? Xpl with xml2 u4 output?

What makes you think there is any serious difference between XP-L V6 And XM-L2 U4?

Look at Hank's photo above. :bigsmile:

Smile Alright things now get massively complicated (HI, HD, same die different packages, etc). I meant that the brightness of the XP-L HD V6 is almost the same with XM-L2 U4.

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DavidEF wrote:
Wrathbringer27 wrote:
DavidEF wrote:
Firelight2 wrote:
The photos of the LED on their sight look identical to an XPL.

Photo is for representation only. It isn’t an actual photo of the item. Smile

So, I did the math. They have one that claims to be 570lm at test current. Test current is 350mA. Forward voltage is 11.3 volts. Claimed efficiency is 144 lm/w. Well, 11.3 × 0.35 × 144 = ~570 so it is accurate. I think 144 lm/w is pretty good. It just doesn’t look right at first glance.


So what does it behave like? Xpl with xml2 u4 output?

That’s what it looks like to me. But, if you look at the photo Hank gave, XPL High Intensity beats XHP35 High Intensity overall, but not by much.

For the die size and output and the price not to mention the voltage needed I think the xpl is the winner here heehee

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Hikelite
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Wrathbringer27 wrote:
Hikelite wrote:

Wrathbringer27 wrote:
So what does it behave like? Xpl with xml2 u4 output?

What makes you think there is any serious difference between XP-L V6 And XM-L2 U4?

The u4 is at 1200lm at 3A? Xpl at 1000lm at 3A? I'm still in the process of learning! :)So if I sound stupid it's most likely because I am still not learned! ;)

These are the official specs by CREE. Keep in mind the U4 should be 7% over the U3, so then the U4 is almost the same as V6. The is no reson to believe XP-L HD is an inferior LED. 

djozz
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Time to make an UF-1405 'longy' ?

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Hopefully it is at least a 6V/12V LED like the other XHPs.  It looks like a single die though, so it may not be configurable as such.  A 11V+ vF LED isn't very useful for most of our lights, since you'd either need 3S cells or a boost driver with 1S or 2S cells.

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L4M4
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Am I the only one who thinks, that Cree should focus on 3,xV LEDs?
I mean… 11V for sub 600 Lumens?
That’s 3-4 LiIons, so it will be a big light with little output.

Sure, Cree doesn’t make it’s LEDs mainly for Flashlights – but it’s a not so small part of it.

Sirius9
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I presume they had in mind automotive application mostly, because more and more lights that are built in cars are LED based.

 

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L4M4 wrote:
Am I the only one who thinks, that Cree should focus on 3,xV LEDs?
I mean… 11V for sub 600 Lumens?
That’s 3-4 LiIons, so it will be a big light with little output.

Sure, Cree doesn’t make it’s LEDs mainly for Flashlights – but it’s a not so small part of it.


Look again. The sub-600 is only at the tested current of 350mA. It is actually rated to go as high as 1050mA and over 1500 lumens. With the guys around here, we’ll probably be seeing it going past 2000 soon enough. Still, requiring 11V to get there doesn’t feel right. 3S LiIon can certainly do better. :bigsmile:

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chenko
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L4M4 wrote:
Am I the only one who thinks, that Cree should focus on 3,xV LEDs?
I mean… 11V for sub 600 Lumens?
That’s 3-4 LiIons, so it will be a big light with little output.

Sure, Cree doesn’t make it’s LEDs mainly for Flashlights – but it’s a not so small part of it.

~12v is interesting for both automotive and home appliances maybe.

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Like I said, I know, that Cree isn’t focussed on flashlights, but it would be very neat if they could bring out lower Vf versions of those LEDs. Like the MT-G2.
For 3,xV, 6,xV and 11,xV.
Shouldn’t be a major problem for them…

And I’m still waiting for a 30-50W Vf 3,xV COB Big Smile

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L4M4 wrote:
And I'm still waiting for a 30-50W Vf 3,xV COB :D

Low voltage and massive current is slightly nonsense, resistance is a too much of big deal and is the most real thing possible to not achieving good results, that is why everything powerful is high voltage, even the mains in the house.

chouster
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Guys, we need boost drivers. Now.

Hikelite
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XP-L HI still has the most average surface luminance per lumen out of all the LEDs shown in the image, so if you want throw that is the way to go, the simple route (no boosting).

bibihang
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Hikelite wrote:

XP-L HI still has the most average surface luminance per lumen out of all the LEDs shown in the image, so if you want throw that is the way to go, the simple route (no boosting).


I wonder about something as shown in the image: Does a domed XP-G2 has higher luminance (surface brightness) than a dedomed XP-L? Really?
Hikelite
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bibihang wrote:

I wonder about something as shown in the image: Does a _domed XP-G2_ has higher luminance (surface brightness) than a _dedomed XP-L_? Really?[/quote]

Not sure about the XP-L HI (so called domeless) so far only low bins have been out via Mouser. But at any rate just calculate to see the percentage increase from 7.8 to 8.2, it is 5.128%, not a monster difference which can easily go into manufacturing tolerances of LEDs.

DavidEF
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Hikelite wrote:

bibihang wrote:
I wonder about something as shown in the image: Does a domed XP-G2 has higher luminance (surface brightness) than a dedomed XP-L? Really?

Not sure about the XP-L HI (so called domeless) so far only low bins have been out via Mouser. But at any rate just calculate to see the percentage increase from 7.8 to 8.2, it is 5.128%, not a monster difference which can easily go into manufacturing tolerances of LEDs.


Remember that number is in comparison to the lumens it gives. So, overall performance is not in that number, but in the wide view of all the numbers. The apparent die size of a XPL HI is about the same as the apparent die size of the domed XP-G2, but the luminous flux is just below double that of the XP-G2. The calculation they use is cd/cm2/lm but they don’t give us the number for cd. If we work the math backward, though, we find that the cd for the domed XP-G2 would be ~5027, while the cd for the XPL HI would be ~8541. So ,the XPL HI actually wins in overall performance. That 7.8 vs 8.2 is almost meaningless in itself. It has to be taken in context.

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Also consider that XPL HI has much better tint than a dedomed XPG2. Even if they have comparable throw I’d go with the XPL HI just for the tint.

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