Cree XP-G R4. Wow. Just Wow.

**Malaki Skywalker** · 10-11-2009, 12:44 PM

You should see the specs for this LED.

Lumen min.: 130
Lumen max.: 347.5
Kelvin min.: 7000
Kelvin max.: 7500
mA test.: 350 mA
mA typ.: 350 mA
mA max.: 1000 mA
V typ.: 3 V
V max.: 4 V

Thats 132 Lumens Per Watt. 3V @ 1000mA = 347.5 Lumen. Thats all one die.

They are available on stars to.

Wow.

**Darth Vane** · 10-11-2009, 04:40 PM

What colors do they come in?

**tullfan81** · 10-11-2009, 05:20 PM

It looks like they are only available in white...unless i didn't look hard enough.

**DJMoonbass** · 10-11-2009, 07:29 PM

interesting. these will replace the P4 white i am just sure.

**Kant Lavar** · 10-12-2009, 10:02 PM

But... 7000 kelvin?! That's 12140.33 degrees Farenheit, or a thousand degrees hotter than the surface of the gorram Sun!

That has to be a typo. If it wasn't... hell, we'd have a for-real lightsaber. For a couple of milliseconds, then the LED would vaporize.

**neophyl** · 10-13-2009, 12:44 AM

The paticular 'shade' colour of light is also measured in Kelvin equivalencies when it comes to white lighting. You often see white light especially leds with a 'warm' or a 'blueish' etc description which is very imprecise, using the kelvin equivalent is more precise.

**Onli-Won Kanomi** · 10-13-2009, 10:18 AM

http://en.wikipedia.org/wiki/Color_temperature

**DJMoonbass** · 10-13-2009, 02:54 PM

bu dum, tish!

**infa008** · 10-17-2009, 07:13 PM

this thing sounds too good to believe. MY questions would be, whats the life span of the led at 1000 ma. and what coloring options would there be for making the white look realistic in red green blue ect. Also how much heat does it produce and would a heatsink work or would fans be needed. It also looks small enough to configure it on a star like a tri rebel. that would take some real power though.

**Kant Lavar** · 10-18-2009, 07:23 PM

Originally Posted by neophyl

The paticular 'shade' colour of light is also measured in Kelvin equivalencies when it comes to white lighting. You often see white light especially leds with a 'warm' or a 'blueish' etc description which is very imprecise, using the kelvin equivalent is more precise.

Originally Posted by Onli-Won Kanomi

http://en.wikipedia.org/wiki/Color_temperature

Ah, that explains it. Thanks, guys. Learn something new every day around this hobby...