LEDs at DX

Flashlight Modding and DIY Parts
1

http://www.dealextreme.com/p/diy-5w-3200k-356lm-warm-white-led-module-dc-3-2-3-6v-141309
http://www.dealextreme.com/p/diy-5w-7000k-493lm-white-led-module-dc-3-2-3-6v-141304

Which LEDs are these?

2

It says Cree on it but I don't think it is. Probably some cheap chinese LED.

3

I think they are Cree XB-D LEDs

http://www.cree.com/led-components-and-modules/products/xlamp/discrete-directional/xlamp-xbd

4

If so then they really exagerated when they said 356 lumens since the xb-d only does 107. Of course this is DX. :P Of course the xb-d is also a 1 watt led not a 5 watt.

5

I think they are both XT-Es and the specifications are accurate.

6

yes may be XT-E. they are rated for 5W and 400+ lumens

7

XB-D rated for 3W. and XT-E rated for 5W

8

They are XT-E emitters. Looks like they used the same WW pic for the CW version but tried to lighten the image and ended up washing it out badly. Really hard to see any details at all on the CW pics.

9

Unless I'm missing something it is 1 watt.

10

that mean 107 lumens per watt efficiency while driving at 350mA.

here what its drive currents and power

11

cool leds wish some baemshot

Cree Website wrote:

up to 107 lumens and 105 lumens per watt in warm white (3000K), both at 350 mA and 85°C.

that is the way to have the max lumen/watt ratio

12

Oh, I interpreted "up to 107 lumens" as the maximum not the most efficient point. Thanks for correcting me.