Multi die XM-L EasyWhite LED

[znomit]

New from cree...

4 dies in the XML package wired either 4S or 2S2P.
Should improve the driver options, and complicate the optics options.

Note binning is now done at 85C so bin for bin these will be around 15% brighter than other LEDs (roughly two bins higher). The datasheet lists up to U4 bin with order codes.... and U6 without order codes.

Datasheet:
http://www.cree.com/products/pdf/XLampXM-L_EZW.pdf

Press release:
http://www.cree.com/press/press_deta...=1302093114022

[HEY HEY ITS HENDO]

..................... ....

[HuffyPuffy]

Efficiency wise (lumens/watt) isn't the XM-L still a winner? It sounds like they are using the additional dies to mimic a halogen, which is an aesthetic gain. They appear to handle the heat pretty well compared to the XM-L - looking at the "RELATIVE FLUX VS. JUNCTION TEMPERATURE" charts in the datasheets.

[BKruahnndon]

datasheet says max current 1000ma/die????
viewing angle is slightly less at 115*

I do wish they would start selling more inventory before releasing all this new stuff. CREE stock is killing me.

[HuffyPuffy]

datasheet says max current 1000ma/die????
viewing angle is slightly less at 115*

I do wish they would start selling more inventory before releasing all this new stuff. CREE stock is killing me.

Last I read on the yahoo board, they had over 100 days of inventory, that was compared to a whole product cycle. They are in a business that requires innovation though so it is hard to knock em for it. I will graciously offer to help them with anything they want to get rid of

[rschultz101]

it's a welcome addition !
higher Vf, means lower current, cheaper and easier drivers.
the XML ~10W, this is rated ~12W ,
with the mix of dies, they can have less color variations.
thought with the gap, it be less of a spot.
and it's the same size as XML.

[WeLight]

You guys might like this, we will have them in warm but also will stock in 4000k


http://www.cutter.com.au/proddetail.php?prod=cut1107

[znomit]

You guys might like this, we will have them in warm but also will stock in 4000k

Do you know what bins will be available?

[Cat-man-do]

datasheet says max current 1000ma/die????
viewing angle is slightly less at 115*

I do wish they would start selling more inventory before releasing all this new stuff. CREE stock is killing me.

Yeah, .... ....no excitement here as I see it. Even if you take the 12V version and drive it at the max ( 1000ma ) data sheet gives it a ~ 750lm output. I figure maybe 600lm OTF. Okay, 600lm OTF@1A is not bad. Maybe that triple board that Welight has could make an interesting set-up for the bars. Each emitter driven in parallel with a 3A driver...1800lm OTF ...not too shabby.

Maybe the good thing about the design is that it will facilitate an easy LED replacement bulb in the MR11 and MR16 format. That's provided someone decides to make an MR11/16 version. For people who still have old MR11 bike lights sitting in the closet there might soon be an easy LED drop-in replacement for your old MR11 6volt halogen bulb that could likely output about 600lm.

[WeLight]

when we get them we we publish them, right now we have 3000k and 2700k bins

[rschultz101]

XML easywhite LED
it's all about the CRI, color render index.
and it's a magnitude nicer.
there is probably ~10 lumen/watt difference .
at 25W plus, should have plenty of lumen to spare a view.
driving the LED at high bins, and high current,
even HID has better color.
driving those at max say 12V bin at 1A,... with driver be about 40W,
would need some serious housing/heat-sink. guess it still be over 3000 lumen.
---
for cutter
might be pertinent to list correct Vf voltage and data sheet.
http://www.cree.com/products/pdf/XLampXM-L_EZW.pdf
is it 6V or 12V or just XML with lower color better CRI ?

[Cat-man-do]

....driving those at max say 12V bin at 1A,... with driver be about 40W,
would need some serious housing/heat-sink. guess it still be over 3000 lumen.
---
for cutter
might be pertinent to list correct Vf voltage and data sheet.
http://www.cree.com/products/pdf/XLampXM-L_EZW.pdf
is it 6V or 12V or just XML with lower color better CRI ?

I think you're reading the data sheet wrong. Cree isn't listing these the same way they did with the MCE. With the MCE they gave you the listing "per die". With these new EZW emitters Cree is giving you two different configurations; one is 2S2P, the other is 4S. They didn't do this with the MCE when it was released. From what I can tell the data sheet is listing the output from the entire configuration(s). Hence, the reason why it takes twice the current ( or twice the voltage ) to get the same output for the two different configurations.

In conclusion, if you could get 3000 lumen from one emitter @ 1A, the realization would be almost unbelievable. Certainly a dream come true to say the least. Sadly I don't think that is the case here.

You can likely drive these beyond spec.but doing so increases the voltage drop plus the heat factor reduces the output accordingly. With good heat sinking maybe get 1000lm with a little more current. How well the emitter would handle the extra current is anyone's guess.

[Vancbiker]

MCEs are spec'd per die because the wiring configuration is established by the star they are being attached to. The EZW wiring configuration is internal.

[rschultz101]

the way I read it
XML 3.3V * 3A = ~9.9W
XML EZ 12.7V * 1A =12.7W

looks to me the XML EZ can take more power / heat
has lower lumen per Watt, minus 10, and has better color.

I like the option for 6V and 12V, thought the 6V be little easier on battery selection.
and a 6V I can drive with a 1500ma driver , what be sufficient.
while a XML with 3.2V need at least 2A+ .
decent drivers for 3A , are 40-60 bucks ,... not even including dim modes
while 1200-1500ma drivers, could be had for 5-10 bucks .

better color, lower current, cheaper driver, better thermal,
looks like a winner to me.
what you think ?

[Cat-man-do]

the way I read it
XML 3.3V * 3A = ~9.9W
XML EZ 12.7V * 1A =12.7W

looks to me the XML EZ can take more power / heat
has lower lumen per Watt, minus 10, and has better color.

I like the option for 6V and 12V, thought the 6V be little easier on battery selection.
and a 6V I can drive with a 1500ma driver , what be sufficient.
while a XML with 3.2V need at least 2A+ .
decent drivers for 3A , are 40-60 bucks ,... not even including dim modes
while 1200-1500ma drivers, could be had for 5-10 bucks .

better color, lower current, cheaper driver, better thermal,
looks like a winner to me.
what you think ?

The EZW does look to be more stable at higher temperatures ( which = less lumen loss at warmer temps )
If you drive a 6V EZW @ 1500ma: that's 750ma for each circuit. That's about 595lm total output +/- 7%. The normal XM-L get's about 530lm @ 1500ma.

I think the real advantage of these is in the color rendering. The CCT for the EZW is 4000K tops. That is a much warmer color than what most people are used to. Still, could have an advantage if used in a bar set up where most of the light is directly in front. A warmer color would cut down reflective glare and give better all-around visibility for short distance flood applications. Since the dome is still smaller than MC-E or P-7's, the cross die pattern should not be as pronounced.

It will be interesting to see what these look like in a real bike light ( if someone cares to try to experiment....troutie, you out there?

[Goldigger]

Did anyone have a play with the easywhite's?
I was just looking on the cree site and noticed that have a MGT easywhite..
Driven at 4amps 1525 lumens..but 9mm x 9mm, would probably work with P7 optics.
Forward Voltage (at 1100 mA, 85° C) V 5.6 - 4amps 6.7
http://www.cree.com/products/xlamp_mtg.asp
http://www.cree.com/products/pdf/XLampMTG-EZW.pdf

@3amps i make that 1400lumens per led?
might replace the P7's in my tripple P7 with 3 of these..hipflex @ 2.8amps should be around 3696lumens..

[mfj197]

Did anyone have a play with the easywhite's?
I was just looking on the cree site and noticed that have a MGT easywhite..
Driven at 4amps 1525 lumens..but 9mm x 9mm, would probably work with P7 optics.
Forward Voltage (at 1100 mA, 85° C) V 5.6 - 4amps 6.7
http://www.cree.com/products/xlamp_mtg.asp
http://www.cree.com/products/pdf/XLampMTG-EZW.pdf

@3amps i make that 1400lumens per led?
might replace the P7's in my tripple P7 with 3 of these..hipflex @ 2.8amps should be around 3696lumens..

Would be an interesting mod certainly. Could your triple handle the heat? Looking at the datasheet the MGTs need about 5.9V to run at 2.8A, so drawing about 16.5 watts per LED, or 50 watts in total. A P7 needs about 3.5V for the same current, so 10W per LED or 30W overall.