Cree XE-G LEDs

[SDchris]

Anyone using cree XE-G LEDs?
Heres the data sheet
Going to replace all my violets with the xe-g violets to start and see how they go. Probably run them at 1500ma.
Might have to try and built a A6211 driver them.
Chris

 

[theatrus]

Nope but interested in seeing layouts. Looks like a hybrid of Luxeon Z and Luxeon Rubix.

Running at those higher powers thermals start to matter a lot especially when the boards get densely packed. If you’re packing them in close it’s starts to warrant the direct thermal path MPCBs.

 

[SDchris]

Yeah heart is a big concern. ATM I'm only using single 20mm stars with direct thermal path. But the heatsink is the makersHEATSINK slim so going to be a challenge. There is a few temp sensors attached so will be interesting to see how high they can be driven.

 

[theatrus]

Took another look at these and there are a few very interesting options, like PC Cyan (Blue with lots of bleed up) and PC Blue (which looks like mostly a royal blue with a little bit of phosphor up to green, but just a little).

Of course I just built something with a 1A limit in mind (and XE-Gs are still in the $2+ range vs $1 for the lower power Luxeon C), but this is an interesting option for reducing chip count at higher output.

The lack of a primary lens isn't too much of an issue if you're looking for wide dispersion.