We were given a few samples of these a week ago, and I finally have gotten around to 'lighting one up'.
Initial impressions...
1) They're difficult to solder...
2) They're brighter than the sun! Yikes!!! Even at a low 350mA (they'll work at 1 Amp - if you can keep 'em cool!) they're bright!
I cranked up the current to about 750mA - just to see if it really does get brighter... problem is... I'm now blind. (joking)
I'm letting it run - at 350mA - and periodically check on it - testing the board it's mounted on - for heat (Bergquist). So far - so good. It's running cool as a cucumber.
I'll do more testing - taking better data - later on, and will try to report the light intensity - taken with a lightmeter.
I'm liking these LEDs... all except for the soldering... still have to work out that detail.
Regards,
James Jackson