Randomblame
Well-Known Member
Yeah, but show me any LM561b+ sample that's available in S6/AY bin. Most of the time S5 is the best flux bin you can get.
New style Samsung LM561C Board
- Thread starter chuckduck
- Start date
Yeah, but show me any LM561b+ sample that's available in S6/AY bin. Most of the time S5 is the best flux bin you can get.
Theirongrow
Member
mate which board or strip mounts S6 / AY? as you say in other post Samsung mounts S6 / AZ in the strips Quantum boards AZ or A1 and in the calculator we compare AZ / A1 as I say in the post are the most common. Anyway with this we know if we receive lm561c if it is not a good bin it is better to receive a good bin of lm561B +.
Randomblame
Well-Known Member
Yes, but the problem is that you will not find LM561b+ better than S5. If LM561b+ was widely available in S6, then it does not make a big difference.
I myself have to rely on LM561b+ for some CRI90 test strips I'm trying to get, because LM561c is not available in CRI90. If I'm lucky, I find a S3/A1 or S2/AY bin in 3000°k/CRI90(~160lm/w).
I myself have to rely on LM561b+ for some CRI90 test strips I'm trying to get, because LM561c is not available in CRI90. If I'm lucky, I find a S3/A1 or S2/AY bin in 3000°k/CRI90(~160lm/w).
Theirongrow
Member
I dont know how much you need but I am sure that for large quantities it is just touching the door of the right distributor or in the states they distribute directly in the state of Georgia they have a direct distribution phone number you could try
http://www.samsung.com/led/support/sales-network/
http://www.samsung.com/led/support/sales-network/
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PhenoMenal
Well-Known Member
can anyone point me to a webpage that explains what BIN is? (S5? S6? AY? eh?) thanks
Randomblame
Well-Known Member
There are different binnings for brightness, voltage range and also for color or spectrum coordinates.
http://www.lighting.philips.com/main/support/support/faqs/general-questions/leds/what-is-binning
PhenoMenal
Well-Known Member
Randomblame, thankyou very much! but it just says "LED chips are mass produced in millions and there are inevitably slight differences in color appearance and light output. Binning is way of sorting the chips so that all the LEDs from one particular bin look the same and have similar light output." ... what is S5, S6, AY etc? any info regarding the Bin naming? thanks 
So did they offer you a cheaper shipping option?
May I ask you how much did u pay per board and shipping?
Randomblame
Well-Known Member
Randomblame, thankyou very much! but it just says "LED chips are mass produced in millions and there are inevitably slight differences in color appearance and light output. Binning is way of sorting the chips so that all the LEDs from one particular bin look the same and have similar light output." ... what is S5, S6, AY etc? any info regarding the Bin naming? thanks
These S* bins are in case of Samsungs Mid-Power LED's the flux bins and described the brightness of the LED's. The highest bin is the brightest. S6 is min. 34 - max. 36lm@65mA for a 3000°k/CRI80 diode when I remember correctly. S5 would be 30-32lm@65mA and so on.
A1, AY or AZ described the voltage bin, again in case of Samsungs Mid-Power LED's each bin means a step of 0,1v.
A1 is 2,8-2,9v/@65mA, AZ is 2,7-2,8v and so on.
Below is the datasheet of LM561c
legalcanada
Well-Known Member
where did you get that lm561c s5 diode, is it from a reliable source? so this way of visual confirmation is only for telling a lm561c s6 diode? because s5 has the black dot as well? what about lower bins also for 561c?
legalcanada
Well-Known Member
yes considerably more noticeable imo, i'll have to take a closer look at my QBs tomorrow n use my loupe. i'm curious about the lower bins. and i'm wondering if cri/color spectrum would make a difference. do they use thicker layers of phosphorus or is it a different color phosphorus coating for different CRIs/spectrums
PhenoMenal
Well-Known Member
omg, BEAUTIFUL macros wietefras!!! (sweet camera too!) I've never before seen that resolution where both the "spottiness" (but it is afterall a sprayed "coat"!) and imperfections and internal wiring of the middle part became so apparent.
I'll be flatbed-scanning some lm561c's within the next couple days but I have a feeling they won't be as defined as yours
The "random spray-paint splatter" effect of the dots also makes it more clear why they're "graded" into different BINS ... I get the feeling that - and totally appreciate - that at this microscopic level, they have to deal with imperfections, which only make a slight difference, but at that scale.....
btw, are Samsung LM561C's considered "nanoengineering"? I'm guessing they're still "microengineering" or similar, but maybe right on that border, science is so amazingly beautiful
ps
I'll be flatbed-scanning some lm561c's within the next couple days but I have a feeling they won't be as defined as yours
The "random spray-paint splatter" effect of the dots also makes it more clear why they're "graded" into different BINS ... I get the feeling that - and totally appreciate - that at this microscopic level, they have to deal with imperfections, which only make a slight difference, but at that scale.....
btw, are Samsung LM561C's considered "nanoengineering"? I'm guessing they're still "microengineering" or similar, but maybe right on that border, science is so amazingly beautiful
ps
They (yours) have almost NO "distinguishable dark dot in the corner" like the B+'s etc have, so i guess that suggests it is S6?
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DankaDank
Well-Known Member
Since those are the best macro shots i have seen and you have done 3000k and 5000k, I will try find my macro lens and take a quality shot of the 4000k LM561C off a samsung SI-B8T221B2HUS strip.
wietefras
Well-Known Member
Yeah I was surprised too. I assumed the coating was more uniform, but indeed it looks like particles of different coatings sprayed in/on the silicone cover.
I'm also a bit shocked that there are so many solder beads still on the strip. Especially the 5000K looks very messy.
Not sure what the magnification of this is, but it's a 1:1 macro lens and then I added some spacers for extra magnification. These photo's are actually composites of 3 images. The focal depth is so shallow that I cannot get the top of the led and the background in focus in one photo. So I had to Z-stack (focus stack) three images to get the whole thing sharp from front to back.
True.They (yours) have almost NO "distinguishable dark dot in the corner" like the B+'s etc have, so i guess that suggests it is S6?
Randomblame
Well-Known Member
Wow, really sharp and useful macro's! Thanks mate!
Yepp, it's always a powder mixed with a clear silicone coating. The more powder is used the lower the kelvins of the emitted light. Particel size is also different like you can see on the example below. These are orange and red phosphor powders but one can get all available colors from Alibaba and one could make its own coating just the way one want it.
Yepp, it's always a powder mixed with a clear silicone coating. The more powder is used the lower the kelvins of the emitted light. Particel size is also different like you can see on the example below. These are orange and red phosphor powders but one can get all available colors from Alibaba and one could make its own coating just the way one want it.
Attachments
PhenoMenal
Well-Known Member
i have a Meanwell HLG-240H-C2100B driver to power 2 x QB-304, but I'm not sure which potentiometer to get so I can take advantage of their nice dimming capability... 50k ohms or 100k ohms? (I just don't want to end up only being able to run them at 50%, or conversely, frying them! 
)
HLG-240H-C2100B specs [link]:
OUTPUT:
)HLG-240H-C2100B specs [link]:
OUTPUT:
- Rated current: 2100mA
- Rated power: 249.9W
- Constant current region: 59 ~ 119V
- Open Circuit Voltage Max: 122V
- Current Adj. Range: 1050 ~ 2100mA
- Voltage range: 90 ~ 305VAC 127 ~ 431VDC
- Frequency range: 47 ~ 63Hz
- AC current: 2.5A/115VAC 1.3A/230VAC 1.1A/277VAC
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Randomblame
Well-Known Member
i have a HLG-240H-C2100B that powers 2 x QB-304, but I'm not sure which potentiometer to get ... 50k ohms or 100k ohms? (I just don't want to end up only being able to run them at 50%, or frying them!
You can use a 50k poti to dimm both lights with one poti. But if you want one poti for each light you need two 100k poti's. I recommend to order a bunch of 10 cheap linear B100k poti's from e3ay and test the resistance of each poti with a multimeter. You want poti's with more than 100k, 110k would be perfect and allows you to use the full capacity of the driver(up to 108% in the best case if you look at the datasheet)
