Cheap and Cheerful DIY using Citizen cobs

CDI is a joke for the most part. inventory nearly non-existent. some minor accessory was out of stock so they sent me an email to ask if it was ok to ship without it, to which ive responded twice in two days to their 'inside sales' rep... no reply and order has not shipped yet.

BOBBY_G said:

CDI is a joke for the most part. inventory nearly non-existent. some minor accessory was out of stock so they sent me an email to ask if it was ok to ship without it, to which ive responded twice in two days to their 'inside sales' rep... no reply and order has not shipped yet.

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That's the opposite of my experience, but I also only talked/emailed sales and my local rep directly. I even RMAed something without any issues.

So, weird. They do need to start stocking. Seems like the 1212s would be easy to move.

I'm considering 31 of those 3500k 0481212s. That forces them to stock 29 extra right?

Tree Fiddy for 900w of ~50% efficient cobs? Hard to pass up that price. Just gotta talk the misses into 700w more lighting than we need. >.>

Atulip said:

I'm considering 31 of those 3500k 0481212s. That forces them to stock 29 extra right?

Tree Fiddy for 900w of ~50% efficient cobs? Hard to pass up that price. Just gotta talk the misses into 700w more lighting than we need. >.>

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That's funny, I was just considering ordering 36 (or 72) of those. Like you said, hard to pass up. My misses already said "just do it!".

We need a group buy lol

My experiences with CDI have been legit, if that is worth anything to anyone.

Regarding the radial sinks Jorge...they lie. You should calculate it out. I bet their TC temps are inaccurate. Maybe not. I find that mass like photons you want more of regardless of the fancy pants design.

I emailed them about 1212's this week and they said I had to special order (8-10 weeks).

Maybe they'll get the hint.

....Or more likely, the customer service drone will just go back to mindlessly flipping through instagram on the company dime.

JorgeGonzales said:

That's the opposite of my experience, but I also only talked/emailed sales and my local rep directly. I even RMAed something without any issues.

So, weird. They do need to start stocking. Seems like the 1212s would be easy to move.

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Budzbuddha said:

So who is the source for these cobs ?
And what would be a better replacement for a 3590 ( 3500k ) ?
Im at the point of my build where all i need is the cobs.
5) cob 3500k
Meanwell 185 1400b / lpc 60 1400

View attachment 3685402

Love this thread - any suggestions appreciated

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That thing looks like a drone lol

Nichia arrived..!

vero top left to compare

have drivers coming..lets see..i need

holders..

passive heatsinks

as well as wiring..


yoiks







they didn't break in my hands but you know.[.the egg shell thing]

would like to put three on each hlg-120-48...parallel

but its my first diy

ps..cdi got back to me on 1212's 048 6-8 weeks..i already had jumped here

future has a shop an hour away ..7.50 deleivery..they came faster than my strawberry plants

Great build, well done Jorge..very slick.

yay my CDI order shipped. we still need to lean on these guys every chance we get

You guys ordering these?





http://m.ebay.com/itm/LOT-OF-10-CITIZEN-51W-LED-Chip-3500K-CITILED-cob-module-CLU036-1206C1-353H6G3-/111985348124

bout same price thru cdi

https://www.cdiweb.com/ProductDetail/CLU0361206C1353H6G3-citizen/562415/

those are version 4 btw. efficacy just over 100

BOBBY_G said:

bout same price thru cdi

https://www.cdiweb.com/ProductDetail/CLU0361206C1353H6G3-citizen/562415/

those are version 4 btw. efficacy just over 100

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So would a HLG 185c 1400b work with these ?
Only reason im asking is that COB seems to max out @ 1380ma
yet the Meanwell is at 1400ma. It is so close but if i can save some bucks from sourcing this COB instead of cree.

at 1380 mA that cob is running 86 lumens/W (4695 lumens w/54.4 W)

heres a bulb that only costs $2 and gets 5000 lumens with 54W:

https://www.1000bulbs.com/category/f54t5-high-output-fluorescent-tubes-3500k/

a better bargain: instead of buying 4 of the $7 chips above, you can buy one $20 chip that outperforms those 4

163W
17665 lm
108 lm/W

https://www.cdiweb.com/ProductDetail/CLU0461812C1353M2G2--citizen/562462/

94% of the lumens for 75% of the power consumption.....

or if you can afford $40 for two of those run at a total of ~200W (100W ea):
13350 lm ea x 2 = 26700 lm total
128 lm/W

OP's $12 chips also a great option though not in stock in 3500k

Holder Options for Citizen CLU04X

• 50-2204CT Ideal Industries Inc (chip lock feature)
  
• BJB GmbH & Co. KG: LED COB Connector: 47.319.2030.50
• BJB GmbH & Co. KG: LED COB Connector: 47.319.2314.50 (chip lock feature)

@JorgeGonzales Does the 'Ledil Angelina Reflector F13839' fit directly over 47.319.2030.50

robincnn said:

Holder Options for Citizen CLU04X

• 50-2204CT Ideal Industries Inc (chip lock feature)
  
• BJB GmbH & Co. KG: LED COB Connector: 47.319.2030.50
• BJB GmbH & Co. KG: LED COB Connector: 47.319.2314.50 (chip lock feature)

View attachment 3687174

@JorgeGonzales Does the 'Ledil Angelina Reflector F13839' fit directly over 47.319.2030.50

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Hi robin,
there is even a 4th cob holder for CLU4X
http://www.tme.eu/de/details/8102_g2/steckverbinder-fuer-led/aag-stucchi/

robincnn said:

Holder Options for Citizen CLU04X

• 50-2204CT Ideal Industries Inc (chip lock feature)
  
• BJB GmbH & Co. KG: LED COB Connector: 47.319.2030.50
• BJB GmbH & Co. KG: LED COB Connector: 47.319.2314.50 (chip lock feature)

View attachment 3687174

@JorgeGonzales Does the 'Ledil Angelina Reflector F13839' fit directly over 47.319.2030.50

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Ah, a proper chip lock feature. Neat. And yes, the reflector is a direct fit. FWIW the nubs on the 2030 held mine in place well enough to grease up and mount. But you can obviously see for yourself.

Hey does this mean you are going to stock some Citizen options?