editor's blog
Subscribe to EE Journal Daily Newsletter

Brighter LEDs

Cree has been manufacturing press releases on brighter LEDs almost as fast as they are (presumably) making the LEDs themselves. And, in one release, they credit a technology they call SC3 for the advances. But, as with many such technology brandings, they didn’t really say much about what it was.

Was it a revolutionary new approach? A big “aha” moment catapulting them forward? Or a collection of incremental things that they bound together and let the marketing department call a “technology”?

Well, its kinda some of both. There’s one big differentiator: they (and only they, as they tell it) use SiC, which they say is 5-10% more efficient, instead of sapphire. We’ve discussed the use of SiC for power devices, so we know there are other companies taking advantage of SiC technology. Why not for LEDs?

Because it’s too expensive. So… why can Cree do it? Because they make their own wafers.

Cree has been manufacturing SiC wafers for 20 or so years. They get to use their own stock; all other LED manufacturers purchase their stock from someone else, and that seems to be enough to make the difference economically for Cree. At least as they tell it.

There are other aspects to what constitutes SC3, encompassing chip design (they have little to say about this other than the fact that the “X” configuration on some of the LEDs hints at some elements); packaging (like a slightly larger dome – talk about incremental!); and the phosphors they use (absolutely tight-lipped about this… sorry… I tried…).

You can scan their release (and follow their links) yourself to see if you can discern anything more. If you do, please share with us in comments below!

Leave a Reply

featured blogs
Sep 24, 2017
Recently, Renesas combined the Cadence® Interconnect Workbench, the Cadence vManager™ Metric-Driven Signoff Platform, and the Cadence Palladium® Z1 Enterprise Emulation Platform to improve their performance validation flow. They were looking for a better way to...
Sep 21, 2017
Everyone likes to browse the web a little bit differently. Some of us love images, while others are happy to browse text-based webpages all day long. This is why we’ve built a variety of different tools on Samtec.com over the years to assist you with finding the product...
Sep 01, 2017
Achronix was delighted to attend the Hot Chips event in Cupertino once again this August. This year saw a bumper turnout, with some very fascinating speakers providing some great insights into the industry. The Achronix team had a chance to meet with many talented people in t...