K2 TFFC 200LM in stock here

[Russki]

Probably it was pointed before.
Anyway, K2 TFFC 200LM in stock here.
http://www.luxeonstar.com/luxeon-k2tffc-led-white-lambertian-200-lm-1000ma-p-297.php
Grab them if you need them.

 

[Gryloc]

Thanks for the info. It is unfortunate that many have left Lumileds in the dust. I managed to get some 0200 TFFC K2s from Photon Fanatic before he recalled his bunch (I did not fear the recall any). All 30 survived a 24+ hour burn in at 350mA, plus fared well after some "abuse" when it came to the current that I delivered to the emitters. Plus, I got mine for less than what luxeonstar is selling them for, and mine were creamy white with a very low Vf. Mine were the opposite from some of the few TFFC K2s that were evaluated on the CPF after they first came out. Many low quantity orders from Future yielded TFFC K2s with un-naturally high Vfs, which as I unstood ticked quite a few people off.

It is too bad that even though these 0200-bin K2s are quite the performer, they are still at the same efficiency level as the Q4 XR-E, which is not that bad really. Lumileds seemed to lag behind Cree just because they did not develop the super-efficiency technologies first. I remember hearing how back in the day that 0110-binned Rebels and 0240-binned K2s were created and were available, but I guess no-one from the CPF was ever able to get their hands on one. Too bad. I hope Lumileds recovers, and tailors themselves to small hobbiests (or hopefully more distributors become available). Again, thanks for the update! :twothumbs

-Tony

 

[tebore]

Thanks for the info. It is unfortunate that many have left Lumileds in the dust. I managed to get some 0200 TFFC K2s from Photon Fanatic before he recalled his bunch (I did not fear the recall any). All 30 survived a 24+ hour burn in at 350mA, plus fared well after some "abuse" when it came to the current that I delivered to the emitters. Plus, I got mine for less than what luxeonstar is selling them for, and mine were creamy white with a very low Vf. Mine were the opposite from some of the few TFFC K2s that were evaluated on the CPF after they first came out. Many low quantity orders from Future yielded TFFC K2s with un-naturally high Vfs, which as I unstood ticked quite a few people off.

It is too bad that even though these 0200-bin K2s are quite the performer, they are still at the same efficiency level as the Q4 XR-E, which is not that bad really. Lumileds seemed to lag behind Cree just because they did not develop the super-efficiency technologies first. I remember hearing how back in the day that 0110-binned Rebels and 0240-binned K2s were created and were available, but I guess no-one from the CPF was ever able to get their hands on one. Too bad. I hope Lumileds recovers, and tailors themselves to small hobbiests (or hopefully more distributors become available). Again, thanks for the update! :twothumbs

-Tony

They're actually closer to the Q2/P4 in efficiency the 0240 would be close but the still not quite Q5 and the Q5 is easier to get. But yeh I hope Lumi catches up soon. Market needs the competition and the beam and color is better than the SSC.

 

[Gryloc]

Shoot, that is correct about the efficiency numbers. Sorry. I believe that the Rebel 0100 was equivalent to the Q4, though. Now I wish that 0240 TFFC K2s are offered somewhere. :sigh:

I guess I would be equally happy if Cree can make a single die emitter in a Lambertian package like the MC-E. That would be neat! The XP-E has a lambertian beam pattern, but I am afraid that the tiny XP-E will be too difficult to solder up compared to the 'ol Rebel, and I am also afraid that the XP-E will be too fragile since it uses bond wires under that tiny dome. Even though the XR-E package is the norm now (along with the odd beam pattern), I still desire Lambertian beam patterns! I think that the U2-binned SSC P4s are the nost efficient Lambertian emitters available now.

 

[tebore]

Shoot, that is correct about the efficiency numbers. Sorry. I believe that the Rebel 0100 was equivalent to the Q4, though. Now I wish that 0240 TFFC K2s are offered somewhere. :sigh:

I guess I would be equally happy if Cree can make a single die emitter in a Lambertian package like the MC-E. That would be neat! The XP-E has a lambertian beam pattern, but I am afraid that the tiny XP-E will be too difficult to solder up compared to the 'ol Rebel, and I am also afraid that the XP-E will be too fragile since it uses bond wires under that tiny dome. Even though the XR-E package is the norm now (along with the odd beam pattern), I still desire Lambertian beam patterns! I think that the U2-binned SSC P4s are the nost efficient Lambertian emitters available now.

Well if you count the MC-E that's close to lambertian in a XR-E style package. It's about 180 degrees of emission but huge die surface the powering 4 dies gives you a new set of things to take care of.