Vero 29 c bougth from Digikey not correct bin option sent

thehobbist

thehobbist

Member
Some months ago I bought from Digikey some cobs vero 29 c, the most efficient cob ever made, or it was some months ago.

I bought the
30 E 10K0 C 73, but not arrived exactly that model, but 30 E 10K0 C 72,
the difference is between 73 and 72.

Is that good or bad? At Bridgelux pdf it says that number is CCT Bin Option, there is options 2, 3 and 4. What is that? Bin? What is CCT Bin?

I need buy some more, but I didn't bougth them because I'm not sure what model choose.
They have
$22 - 30 E 10K0 C 73 SE cob (I bought it but arrived 72, not 73)cob
$27 - 30 E 10K0 C 73 (never bought it)

Should I buy the most expensive now?
 
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thehobbist

thehobbist

Member
At Bridgelux pdf, they write a x instead 2,3, or 4
BXRC-35E10K0-C-7X
and the 3 numbers have 196 lumens/watt at 56.7watts, no difference, but I will run them at 33 watts for more efficiency!
 
thehobbist

thehobbist

Member
In future I will buy quantum boards, but at moment the difference between quantum boards and good cobs is very little, if the numbers they give about lumens is correct.
QB288 V2 Quantum Boards from HLG
50 watts 196 lum/W
23 watts 206 lum/W
 
Greengenes707

Greengenes707

Well-Known Member
You're fine man. They gave you better chips by most standards. Those chromatic bins are for how far the vary from base CCT. Each degree of variation being a step, maybe a ~20k worth radius. Think of it as the exact CCT is the bullseye, and each step is the next ring out from bullseyes.
In the general lighting world shops and buildings don't want people noticing variations in lights down a hallway or something. Human eye can see the difference at 2+ steps. Plants on the other hand, there is no measurable difference that they can see. Though in theory some might say slight variation would be better, but not the variation amounts we are talking about in chromatic binning steps.

Most all authorized distributors can/might send you better bins(flux or cct) than ordered, but never worse.

https://www.lec-expert.com/topics/white-and-leds-binning
http://www.photometrictesting.co.uk/File/blog_LED_colour_difference.php
 
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thehobbist

thehobbist

Member
I think I understand now, thanks

usually there is 2 types of bins: flux and ctt

FLUX is important for plants, it means more light/most efficient cobs.

CTT is relative to color, not important for plants, because very small variation, bigger the bin number, bigger variation color between cobs. 2 better than 3

In reality they give me a better bin
 
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Airwalker16

Airwalker16

Well-Known Member
Greengenes707 said:
You're fine man. They gave you better chips by most standards. Those chromatic bins are for how far the vary from base CCT. Each degree of variation being a step, maybe a ~20k worth radius. Think of it as the exact CCT is the bullseye, and each step is the next ring out from bullseyes.
In the general lighting world shops and buildings don't want people noticing variations in lights down a hallway or something. Human eye can see the difference at 2+ steps. Plants on the other hand, there is no measurable difference that they can see. Though in theory some might say slight variation would be better, but not the variation amounts we are talking about in chromatic binning steps.

Most all authorized distributors can/might send you better bins(flux or cct) than ordered, but never worse.

https://www.lec-expert.com/topics/white-and-leds-binning
http://www.photometrictesting.co.uk/File/blog_LED_colour_difference.php
Click to expand...
Welcome back, homie.
 
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