I just know that left is LM561c
New style Samsung LM561C Board
- Thread starter chuckduck
- Start date
nc208
Well-Known Member
PhenoMenal
Well-Known Member
are those conjoined images at the same scale? it makes one look larger.
Unfortunately though, LM561C, LM561B, and LM561B+ are all the same size: 5.6 mm x 3.0 mm
These are from Samsung's LED page ...
LM561C... (200lm/watt)
LM561B+... (190lm/watt) looks pretty much identical to LM561C
...
LM561B though is easy to distinguish because of its "inverted side bar", and only one rounded corner...
Unfortunately though, LM561C, LM561B, and LM561B+ are all the same size: 5.6 mm x 3.0 mm
These are from Samsung's LED page ...
LM561C... (200lm/watt)
LM561B+... (190lm/watt) looks pretty much identical to LM561C
...
LM561B though is easy to distinguish because of its "inverted side bar", and only one rounded corner...
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Danielson999
Well-Known Member
Personally I don't think those are even real photos. They look more like computer generated images and they use the same one for all diodes of the same dimensions.
PhenoMenal
Well-Known Member
Yes theyre not photos, just Samsung's illustrations, i guess thats why they dont have that black dot either.
I havent been able to find any truly close-up photos or scans. I'll be able to scan mine when it arrives in a week or so
Digikey sells them individually for <$1 each, but it was $25 shipping pfft... *keeps searching*
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PhenoMenal
Well-Known Member
btw these look interesting... 10% more efficient than LM561C?...
[edit - sweet, there's already a rollitup thread] - https://www.rollitup.org/t/samsung-lm301b.949988/
Samsung's LM301 packaged LED family achieves 220-lm/W efficacy
http://www.ledsmagazine.com/articles/2017/06/packaged-led-news-samsung-lumileds-bridgelux-everlight.html
3.0mm x 3.0mm (compared to LM561C 3.0mm x 5.6mm), so I guess you'd need nearly twice as many to match an LM561C setup, more expensive upfront but better in the long run
btw wikipedia's page for Luminous efficacy states that the "Theoretical limit for a white LED with phosphorescence color mixing = 260 to 300 lm/watt", so these quantum boards @ 200 are pushing the limits! And these LEDs were only commercialized in 1996 ... when they were 5lm/watt
... 5 to 220 in 21 years ... 10.4lm/watt improvement every year, putting us on target to reach the theoretical limit of 260-300 in 2021-2025. Those QB's are gonna smoooke! .... but then where does the industry go from there!? what's next!? or is that it ... physics laws saying "you've had your fun, no more"
[edit - sweet, there's already a rollitup thread] - https://www.rollitup.org/t/samsung-lm301b.949988/
Samsung's LM301 packaged LED family achieves 220-lm/W efficacy
http://www.ledsmagazine.com/articles/2017/06/packaged-led-news-samsung-lumileds-bridgelux-everlight.html
3.0mm x 3.0mm (compared to LM561C 3.0mm x 5.6mm), so I guess you'd need nearly twice as many to match an LM561C setup, more expensive upfront but better in the long run
btw wikipedia's page for Luminous efficacy states that the "Theoretical limit for a white LED with phosphorescence color mixing = 260 to 300 lm/watt", so these quantum boards @ 200 are pushing the limits! And these LEDs were only commercialized in 1996 ... when they were 5lm/watt
... 5 to 220 in 21 years ... 10.4lm/watt improvement every year, putting us on target to reach the theoretical limit of 260-300 in 2021-2025. Those QB's are gonna smoooke! .... but then where does the industry go from there!? what's next!? or is that it ... physics laws saying "you've had your fun, no more"
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PhenoMenal
Well-Known Member
yeah im in Australia, but this was the digikey.com.au site!
I just checked the digikey.com site and theirs is AU$24, $1 cheaper heh
I'll drop em an email
I just checked the digikey.com site and theirs is AU$24, $1 cheaper heh
I'll drop em an email
nc208
Well-Known Member
That is my understanding yes. If you look at hlgs pics they don't show these tiny dots. I can see them from over 3 feet away on my strips and most others I've seen come from Alibaba. The photo I showed in my previous post is from an actual strip made from samsung showing the dot much more pronounced and in their spec sheet it is a lm561b+.
PhenoMenal
Well-Known Member
Not trying to be rude just playing devil's advocate. But if you look at the 1st pic 2nd diode down. It looks as though it has the black dot. Could they have mixed some of them together? Not asking 4 more pics or anything. I'd take your word on it and thanks for taking the time to share awesome!!!
@PhenoMenal any news?
Schalalala
Active Member
Great pics! This samsung video also shows the differences between them pretty good - LM561B+ = same package as LM561C but smaller die:
coreywebster
Well-Known Member
This reminded me of this article. Albeit pointless for us but still it boggles the mind.
https://inhabitat.com/mit-researchers-create-led-light-that-exceeds-100-percent-efficiency/
PhenoMenal
Well-Known Member
Its inbound, not sure how long it'll take though (guess ~5 biz days), I talked them down in shipping price so that might've delegated me from Express to Standard though the parcel tracking # suggests its Express. Anyway from all reports so far they should be legit lm561C S6, and will do a flatbed scan when it arrives
PhenoMenal
Well-Known Member
Interesting ... they say their light "produces more energy than it consumes" ... I'm probably not thinking about it right or missing something or still in the process of waking up, but... couldn't you make a PERPETUAL ENERGY device with such a thing!? which are supposed to be impossible as per the laws of physics!? *shrug* lol
nfhiggs
Well-Known Member
Its explained in the comment section that the "extra energy" comes from environmental heat
Theirongrow
Member
Lm561C= Marketing
This is a common practice in many companies change a little the appearance make the numbers dance a little and we have new product !!!. because really where is the difference?
Ok we get lm561c S6 but surely the vf is the one we want? with the lm561B + it is easy to get a good vf because as the video says it is cheap but suppose that in the lm561c S6 we get an A1 that is one of the most common since it is a bit cheaper than the AZ
I think in the end it's the same chip highlighted by the marketing strategy.
This is a common practice in many companies change a little the appearance make the numbers dance a little and we have new product !!!. because really where is the difference?
Ok we get lm561c S6 but surely the vf is the one we want? with the lm561B + it is easy to get a good vf because as the video says it is cheap but suppose that in the lm561c S6 we get an A1 that is one of the most common since it is a bit cheaper than the AZ
I think in the end it's the same chip highlighted by the marketing strategy.