Nichia LED type NSPWR70CS-K1E info?

Question

I have just received LEDs type NSPWR70CS-K1E from Nichia. Does anyone have any experience with these LEDs? I cannot find any Spec. Sheets. I don't know their efficiency.

Answer 1

You can get a decent curve, or efficiency by measuring voltage vs. current (power).

Answer 2

I have used a K1 LED from Nichia.  Your LED seems to be a new sample they are developing so no data sheet yet.

http://www.nichia.com/product/led-lamp-f...

At the bottom of the page, it does have a few details about that particular LED