Samsung INFLUX strips (LM301A) - any good?

Randomblame

Randomblame

Well-Known Member
Prawn Connery said:
I just found these on Arrow's website and they seem to be really cheap: https://www.arrow.com/en/products/sl-b8r7n90l1ww/samsung-electronics

I know they're older technology, but for the price of one 2' F Series double strip, I could buy three of these.

Efficiencies aside, would there be any reason not to use these for a cheap veg frame build? I'm thinking 5 strips matched to a HLG-240H-48A. Thanks.
Click to expand...

Nope, why not?
They are cheap and powerful! Less effiency means more heat will be produced and that could in your case(high ambient temps) speak against these strips but when used only for vegging with less intensity per sft. ..., why not?

However, you can get Bridgelux gen.2 strips in 5000°k in a couple of days. 3500°k is already available, 5000°k should be available from 01/02/18. Digikey...

https://www.digikey.de/products/de/optoelectronics/led-lighting-cobs-engines-modules/111?k=&pkeyword=&v=976&s=60762&FV=ffe0006f&mnonly=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25
 
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boyd crowder

boyd crowder

Active Member
These I spotted last night, they're 10$ for the s09s that's about 1klm per dollar and half the price of the blue I wanna try some soon
 
Prawn Connery

Prawn Connery

Well-Known Member
Randomblame said:
Nope, why not?
They are cheap and powerful! Less effiency means more heat will be produced and that could in your case(high ambient temps) speak against these strips but when used only for vegging with less intensity per sft. ..., why not?

However, you can get Bridgelux gen.2 strips in 5000°k in a couple of days. 3500°k is already available, 5000°k should be available from 01/02/18. Digikey...

https://www.digikey.de/products/de/optoelectronics/led-lighting-cobs-engines-modules/111?k=&pkeyword=&v=976&s=60762&FV=ffe0006f&mnonly=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25
Click to expand...
What's so good about the Bridgelux Gen 2 compared to, say, the Samsung F Series?
 
Randomblame

Randomblame

Well-Known Member
Prawn Connery said:
What's so good about the Bridgelux Gen 2 compared to, say, the Samsung F Series?
Click to expand...

Nothing! EB gen.2 is between Samsungs H- and F-series but costs only 7$/2ft. strip.
H-series is 22,5v/480mA, so 10,8w for 12,50$ and EB-series is 19,5v/700mA, which is 13,65w for 7$.
The Samsungs are still a bit better in terms of effiency(eg. 179lm/w vs. 175lm/w in 3000°k) but EB's are cheaper.

Another comparision with F-series strips at nom. current.
Unfortunately I have only the 3000°k #‘s ...(*)

EB Series Gen2 3000K@700mA(87,5mA per diode)
QER=4.84 µmol/J
LER=331.66 lm/W
= 2.55 µmol/J
13,65w * 2,55μMol/J / 7,40$ = 4,70μMol/$

F-Series Gen3 3000K@1120mA(124mA per diode)
QER=4.86 µmol/J
LER=321.60 lm/W
= 2.54 µmol/J
25.8W * 2.54 µmol/J / 14.48$ = 4.53 µmol/$

Not a big price difference here. The only advantage is you have more strips which allows a better spread.

*) #'s are cherry picked from EB series thread
 
D

Dave455

Well-Known Member
Randomblame said:
Nothing! EB gen.2 is between Samsungs H- and F-series but costs only 7$/2ft. strip.
H-series is 22,5v/480mA, so 10,8w for 12,50$ and EB-series is 19,5v/700mA, which is 13,65w for 7$.
The Samsungs are still a bit better in terms of effiency(eg. 179lm/w vs. 175lm/w in 3000°k) but EB's are cheaper.

Another comparision with F-series strips at nom. current.
Unfortunately I have only the 3000°k #‘s ...(*)

EB Series Gen2 3000K@700mA(87,5mA per diode)
QER=4.84 µmol/J
LER=331.66 lm/W
= 2.55 µmol/J
13,65w * 2,55μMol/J / 7,40$ = 4,70μMol/$

F-Series Gen3 3000K@1120mA(124mA per diode)
QER=4.86 µmol/J
LER=321.60 lm/W
= 2.54 µmol/J
25.8W * 2.54 µmol/J / 14.48$ = 4.53 µmol/$

Not a big price difference here. The only advantage is you have more strips which allows a better spread.

*) #'s are cherry picked from EB series thread
Click to expand...
How about the spectrum differences .ratio of blue and red in each 3000k....
 
boyd crowder

boyd crowder

Active Member
just picked up 10 5000k for 93 and 3 240-1400 drivers gonna do a lil low profile build for a double decker vegger cab
2 4ups -2 spares
at 1$ PER 1000 LUMENS i decided to just try it out before buying some QBs
this gives me stuff to play with and i can get some other shit to toss on these drivers for experiments

i gotta try and make some efficiency improvements - id do a buld here if folks was interested........

i cant read anymore on the subject
ive sat on thefence too long
just gotta buy some kit and get to fuckin around
its gonna smoke that ol marsII i started with lol

oh shit - just realized this is riu forums
i have some wrong in this post

i will be viciously corrected in 3-2-....
 
Prawn Connery

Prawn Connery

Well-Known Member
Well I'm not going to correct you, and I would be very interested to see your build and grow. Whatever works, works in my books. Lighting is only one element of growing - you still have to be able to grow properly!

Now, if I'm reading correctly, those LM301A diodes are 1.5w chips that can run as high as 500ma @ 3.1v: http://www.samsung.com/global/business/business-images/led/file/product/products/201606/Data_Sheet_LM301A_CRI80_Rev.4.0.pdf

But the strips are max rated at 230ma per diode (1.38a/6p for the L09 strips) - which is only 46%: https://media.digikey.com/pdf/Data Sheets/Samsung PDFs/inFlux_Linear_Rev.0.9_2-5-16.pdf

Would that be due to heat considerations? Any other reason why the strips would be max rated so low compared to the individual diodes?
 
Randomblame

Randomblame

Well-Known Member
Prawn Connery said:
Well I'm not going to correct you, and I would be very interested to see your build and grow. Whatever works, works in my books. Lighting is only one element of growing - you still have to be able to grow properly!

Now, if I'm reading correctly, those LM301A diodes are 1.5w chips that can run as high as 500ma @ 3.1v: http://www.samsung.com/global/business/business-images/led/file/product/products/201606/Data_Sheet_LM301A_CRI80_Rev.4.0.pdf

But the strips are max rated at 230ma per diode (1.38a/6p for the L09 strips) - which is only 46%: https://media.digikey.com/pdf/Data Sheets/Samsung PDFs/inFlux_Linear_Rev.0.9_2-5-16.pdf

Would that be due to heat considerations? Any other reason why the strips would be max rated so low compared to the individual diodes?
Click to expand...

Yepp, because Samung is binning the strips without additional heatsinks. Thats normal!

Every LED has a max. and a recommended current. LM561c can do 200mA but run with 80mA on H-series and with 124mA on F-series strips. With proper cooling there is no reason to stay at 230mA. Only have a look at the temperatur.

Edit:
Just seen, the LEDs can handle up to 125°C. It should not be a problem to increase the current.
 
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