New Cree J Series 3030

Stephenj37826

Well-Known Member
What do you guys think of these? They look interesting and I'm hoping I might be able to get some strips made up in time to use for my current grow. They come in three 3030 designs, including 2.8v/240ma, 6v/200ma and 3.2v/400ma. I'm looking at the 2.8v/240ma for the build.

https://bg.e-neon.ru/image/catalog/pdf/data-sheet-JSeries-3030.pdf?escape=1
Meh..... Sanan built them in China. Probably hit similar numbers with several 3030s out there. Look into Lumileds. Those things are everywhere and I haven't crunched the exacts but this looks to be middle of the road.
 

Dave455

Well-Known Member
What do you guys think of these? They look interesting and I'm hoping I might be able to get some strips made up in time to use for my current grow. They come in three 3030 designs, including 2.8v/240ma, 6v/200ma and 3.2v/400ma. I'm looking at the 2.8v/240ma for the build.

https://bg.e-neon.ru/image/catalog/pdf/data-sheet-JSeries-3030.pdf?escape=1
Nice looking spectral chart on the 90 CRI 3000 color series. Nice red peak for flower !!
Strips in this color would be great.
 

Randomblame

Well-Known Member
But those numbers still looking good and comparable to latest EB Series, gen.2. If you can get the best binnings and the price is low, why not ...? But only if they are cheaper than the new EB series, which will arrive soon.
 

Prawn Connery

Well-Known Member
The fact they are rated at up to 240ma at 101 degrees C, does that provide any advantage over the others? For example, if your room naturally ran hot (which mine does).
 

Randomblame

Well-Known Member
The fact they are rated at up to 240ma at 101 degrees C, does that provide any advantage over the others? For example, if your room naturally ran hot (which mine does).
Compare absolut max. ratings and then compared both thermal derating curve at 40° Ta. That's from LM561c datasheet.
I doubt that you will get such high temperatures on a strip with proper cooling even at 50° T.a or do you really want to drive them at 240mA?
At 240mA/105°T.j a 3000°k/CRI80 3030 diode would probably be anywhere between 110 and 120lm/w.
 

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Prawn Connery

Well-Known Member
Meh..... Sanan built them in China. Probably hit similar numbers with several 3030s out there. Look into Lumileds. Those things are everywhere and I haven't crunched the exacts but this looks to be middle of the road.
The Crees were offered as a possible replacement for the Nichia 757s on the Cutter strips I was hoping to order, but now look to be out of stock.

Maybe I'm missing something, but I can't actually find any Lumiled 3030 chips in the same class to rival the Crees/Samsungs/Nichias etc. I'll have another look . . .
 

Randomblame

Well-Known Member
The Crees were offered as a possible replacement for the Nichia 757s on the Cutter strips I was hoping to order, but now look to be out of stock.

Maybe I'm missing something, but I can't actually find any Lumiled 3030 chips in the same class to rival the Crees/Samsungs/Nichias etc. I'll have another look . . .

As brighter or as cheaper replacement?
 

Stephenj37826

Well-Known Member
The Crees were offered as a possible replacement for the Nichia 757s on the Cutter strips I was hoping to order, but now look to be out of stock.

Maybe I'm missing something, but I can't actually find any Lumiled 3030 chips in the same class to rival the Crees/Samsungs/Nichias etc. I'll have another look . . .

You are correct. 3030 2D is behind I see. You should ask around though. Sometimes higher flux bins than are in the data sheet are available. Nichia are really good. Samsung LM301B will be impressive once we can get them..... Hold tight we have a trick or 2 up our sleeves. We will be posting some new sphere data in 2-3 weeks of some of our projects. Higher end stuff but absolutely amazing.
 

Prawn Connery

Well-Known Member
As brighter or as cheaper replacement?
Just something they have on hand, as they've run out of 2000K Nichia's - which is what I originally wanted - and they may not have enough 3000K Nichias for my needs. I liked the idea of the Nichias, but don't know anything about the new Cree J Series, which is why I thought I'd ask for opinions here.
 

Randomblame

Well-Known Member
If you like using lower kelvin temps have a look at the pdf below.
Luxeon fresh focus(fresh and marbled meat) diodes have ~1700-1900°k but if you look at the spectrum diagram the red peak is nearly in a perfect range.
Here is a thread somewhere we have discussed about this diodes, maybe, when I find it again, I'll let you know. I could swear I have seen them on sol-skin boards as additionals and the discussion was in one of the CRI90 threads...
But in short, the spectrum is similar to the vero meat chips only in a small smd3014 footprint.
 

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Prawn Connery

Well-Known Member
I'm new to all this, but taking one look at that spec sheet has me asking: why aren't more people using these types of LEDs for flowering, and/or as a supplement for blue (450nm) and deep red (650nm)?

"Well, because it only produces 86 lumens per watt!" I can hear people saying.

But see, this is the thing I don't quite follow . . . So much emphasis seems to be placed on luminous flux - lumens per watt - in terms off LED efficiency, and not radiant flux - which is arguably a far more accurate measure of how a chip or diode may perform in terms of flower or veg power.

The simple fact luminous flux is weighted around the green spectra where the human eye is most sensitive - and where photosynthesis is arguably least reliant (for flowering purposes at least) - means a "super efficient" LED in terms of LPW that puts out a significant amount of its radiant energy in the 500-600nm wavelengths may not be all that efficient at all when it comes to horticulture.

I know luminous flux is all we have to measure one diode against another on factory data sheets - and I am not ignoring the importance of the green spectra for complete photosynthetic efficiency and light penetration; nor the fact total radiant energy in all usable wavelengths is a greater driver of photosynthetic performance than spectrum alone - but I see a case for perhaps moving somewhat away from all this emphasis on lumens per watt towards desired spectra.

I don't know how else to measure the efficiency of that "fresh meat" diode, but it seems to me to have the basis for a very good flowering lamp.
 

Prawn Connery

Well-Known Member
You are correct. 3030 2D is behind I see. You should ask around though. Sometimes higher flux bins than are in the data sheet are available. Nichia are really good. Samsung LM301B will be impressive once we can get them..... Hold tight we have a trick or 2 up our sleeves. We will be posting some new sphere data in 2-3 weeks of some of our projects. Higher end stuff but absolutely amazing.
I wish I could wait, but I've put this off long enough. I have a long indoor growing history, but due to recent work/life commitments, I have just started my first grow in almost three years. It took a while to school myself to the point where I was confident enough to take the plunge into LEDs, and now that I've built my first veg frame using 5000K F Series strips, I need to build or buy myself a flowering lamp in the next two weeks, as I will need to start flowering then.

I could conceivably borrow a 600w HPS lamp to get me by, but that kinda defeats the purpose of going LED. And lets face it, new technology is coming out every day - I could wait for another 10 years for the next Big Thing - but you have to commit some time. So end of next week is really my cut-off limit in terms of decision time.
 

wietefras

Well-Known Member
"Well, because it only produces 86 lumens per watt!" I can hear people saying.

But see, this is the thing I don't quite follow . . . So much emphasis seems to be placed on luminous flux - lumens per watt
Heh, so, no one actually says that, but you have a whole rant about it anyway? :cool:

For comparing 3000K COBs/SMDs, lumen gives a decent indication of efficacy.

For more "exotic" SPDs, Alesh made an Excel sheet that lets you calculate the LER and QER from a spectral power distribution chart. Allowing those lumen values to be converted into PAR values (either 400-700 or wider).
 
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