CREE Has Been Purchased New LEDs In The Works

[MEXICOWANDERER]

Details are sketchy but CREE hinted silicon carbide-based LEDs are in the works. 50+% less heating. Much more efficient. Silicon Carbide?

[MEXICOWANDERER]

Could it also be the new technology is for military and space usage? One coronal solar discharge would destroy a lot of orbiting tech. For lighting habitally dark areas outside, and inside.

[GordonThree]

I thought the maximum was 300lm/watt for a phosphor conversion LED? The blue/uv they use to drive the phosphor is the bottleneck as I recall. If they could drive the phosphor with green LEDs instead, could be interesting.

[frankwp]

I follow LED technology a bit & am pretty sure something as spectacular as a 400 W/lumen LED chip would have been noted on one of the several trade sources that I regularly peruse.

[MEXICOWANDERER]

That's why I wrote silicon carbide? I haven't kept up with new tech because the gift lights I buy for remote ranches keeps me busy. I use obsolete CPU heatsinks with fans and 50 watt rated chips for the main room and 10 watt chips for the bedroom.

[frankwp]

wa8yxm wrote:
WOW their LED's are already amazing I have a 1200 Lumen flashlight that draws 1 amp at 3 volts.. that's 3 watts 1200 lumen is 100 watts on ye old style lamps.

Something is wrong with those numbers. Cree has generally been one of the leaders in LED tech, but 400W/lumen just doesn't seem possible. Most LEDs are around 100 - 120 W/lumen, and 200 w/lumen is bleeding edge. Maybe one of the marketing wanks at Cree got a little over excited.

[Dick_B]

There is a newer Cree bulb that is supposed to be better than the old led's for enclosed spaces such as ceiling fixtures. Maybe they use the newer silicon-carbide technology.

[GordonThree]

As I understand it, using carbide allows the diodes to operate and remain stable at much higher temperatures.

For a while, Cree found more profits in using their process technology to make switches for EV and electrical grid applications, instead of the LED market.

Cree has come out with some fantastic hugely powerful transistors over the last few years.

[JaxDad]

I thought based on what I’m reading that the LEDs they produce are already silicon carbide based products.

Read the ‘1983’ section Clicky, clicky

[wa8yxm]

WOW their LED's are already amazing I have a 1200 Lumen flashlight that draws 1 amp at 3 volts.. that's 3 watts 1200 lumen is 100 watts on ye old style lamps.