Citizen CLU048-1216?

Very good efficiency in the simulator, but does it really exist? I can find almost nothing on the internet.

Maybe you're talking about the 1206
http://ce.citizen.co.jp/productse/info.php?no=116

Or maybe since efficiency is somewhat predictable they have put in a hypothetical 1216 in the simulator.

1216 looks new

data sheets (not on the citizen site yet):

90 CRI: https://www.leds.co.uk/download_file/view/855/552
80 CRI: https://www.leds.co.uk/download_file/view/854/552

guy_incognito251 said:

1216 looks new

data sheets (not on the citizen site yet):

90 CRI: https://www.leds.co.uk/download_file/view/855/552
80 CRI: https://www.leds.co.uk/download_file/view/854/552

Click to expand...

Then they are yet to be released to the major distributors.

interesting. seems to be same efficiency as 1212 at low currents but def has a few percent edge above 100W. 20% reduction in thermal resistance

the chips with more strings in parallel than series seem to be more efficient (1825 vs 3618, 1212 and 1818 vs 1812, etc)

the gen6 1212 was sneaking up on cxb, this will prob top it at $15/chip or so

@1212ham , where are you seeing a simulator with 1216 in it?

technically speaking these are interchangeable with gen6 1212s, same voltage due to same number of dies in series

It was the high efficiency that caught my eye when I used the simulator. Here is the link... http://pages.light.fi/download-simulator

EDIT: I forgot to mention, it's the Gen. 6 simulator.

thanks, thats 1.05, the gen6 simulator i had was 1.02. seems like citi's US division lag behind the other regions. will be interesting to test, the simulator actually shows 1212 as more efficient below 500 mA but once you get to 700 and above the 1216 pulls away (esp above 2000 mA

even at 1400 mA there is advantages. significant bump in thermal management and efficiency but what i really like is the solid 1V drop in voltage- thats gonna open up more driver options for sure where the 1212 was tight



i was never a big fan of the 1812 even though it was the closest match to a cxb, as its higher number of dies in series dipped the efficiciency a bit (relative to the similar voltage 1818, the 1812 is still better than 1212 watt for watt). this 1216 is about the same performance as 1812 at a given wattage and should fill the gap nicely and at 36V (34V!) taboot.

you can see the big impact die arrangement has on voltage. 1812 is too high to work well with the popular 48A drivers. 1818 is better on voltage and 1825 better yet

a 1218 would have been most excellent but im sure they have their reasons, one of the features touted in the datasheet is improved die layout maybe thats how theyre getting the bump in thermal performance

id probably elect to phase out the 1212 in favor of 1216 eventually. citi has too many options, i just want to stock the best model in 36V, the best model in 50V, etc.

http://cobkits.com/product/citizen-clu048-1216-80cri-gen6/
http://cobkits.com/product/citizen-clu048-1216-90cri-gen6/

CobKits said:

technically speaking these are interchangeable with gen6 1212s, same voltage due to same number of dies in series

Click to expand...

actually if run in parallel these would pull harder due to lower voltage. most people run 36V cobs at constant curent, but there are a handful of people ou tthere with 36A and 36B drivers, so just want to reitierate these are not necessarily a drop-in addition (will prob work in your setup, but should be tested for voltage and current once wired up)

a question, on simulator 1216 at 1750mA at Tc° 25C° = 35.8v
it's possible to fit n.4 1216 on MeanWell HLG-240H-C1750B (143v not open)?
1216 x 4 = 35.8v X 4 = 143.2

would definitely work. and youd prob be above Tc=25 so voltage would drop a little

So whats the verdict? 1216 for the win?

versus what?

versus 12/12 , 1812. im not sure how to use that simulator, it won't let me change anything, is that normal? I assumed we would be able to put our own figures in.
but question cobkits I'm not electrically minded, it says 34.6 volts I think from memory, can you run this on the same driver as a 3590 36v?
theres some on Alibaba, 90cri, was thinking of grabbing some if they are winners etc

citi chips scale pretty well by die count and cost. if you need 20-50W use 1212, if you need 30-75W use 1216, 50-100W 1818, 75-200W 1825, 150-500W 3618

and the cost per chip per watt is similar if you stay in those ranges

i think luminus has the edge in the typical 50-75W range over the citis just because its as good as an 1818 and 3/4 of the cost

i kind of consider 1216 a specialty chip (remember citi also has a 1211 and 1812 - too many options imo). its certainly the best 36V chip they make but im not sure the cost per chip is really justified over 1212 and luminus whoops 1216 for like another 2 bucks. kinda like how 3618 is the best CLU058 chip they make but 1825 is still a better value for most people as few people run chips over 150W and would see little if any advantage

so im still repping 1212s, but bought 60 of each 1216 for those who its a good fit

very well explained, I emailed the cobkits site a day ago to see if you guys shipped internationally.
whats the best way to ask questions about your stock,
I've got a rough idea of what I want, but I am no expert, Id love for some advice.

i have a little backlog of emails, monday was busy. email is best for questions i usually get to them within a day

we do ship international

chips and smallparts only are usually $12 uninsured/$32 insured

drivers and heatsinks can be $60-$100 to ship

zangtumtum said:

a question, on simulator 1216 at 1750mA at Tc° 25C° = 35.8v
it's possible to fit n.4 1216 on MeanWell HLG-240H-C1750B (143v not open)?
1216 x 4 = 35.8v X 4 = 143.2

Click to expand...

And how about the same config, but with 1212 gen6?
4pcs CLU048-1212 fits on a MW-HLG-240-1750?

CitiLED says 36.3V at 50°Tj, 1750mA and 63.5W = 145.2V and 254W.
HLG-240H-C1750 datasheets says 250.25W, 143V and 146V open circuit voltaje.

@CobKits this is what I'm about to order and when I get more money I'll add on to it but would you recommend1 240-1400 or2 185's
6pcs--CLU048-1216C4-353H5M3-F1
6pcs--Ideal holder 50-2204CT
6pcs--Ideal adaptor 50-2100AN
6pcs--Reflector KB-D82-90RF
6pcs--Heatsink Φ133*H70mm(for 50-65W)
12pcs Wago connector 222-412
Any advice would be greatly appreciated