23x CLU048-1212C4 vs. 6x CXB3590 CD

@tomate Here are your holders-https://led.cdiweb.com/LED-COB-Connector/ProductsGrid/11143#null

It should be possible to cross-reference the Citizen simulator with this PPF chart and see if we are in the right ballpark, but just dividing the PPF by PPF/W doesn't get us the same watts for those currents and temps, so I gave that up real quick.

nevergoodenuf said:

@tomate Here are your holders-https://led.cdiweb.com/LED-COB-Connector/ProductsGrid/11143#null

Click to expand...

I used these https://led.cdiweb.com/ProductDetail/47319203050-BJB-GmbH-Co-KG/592663/ in particular. $1 each.

Thx for the links guys.

So for example taking the CLU058-1825 3000K 80Ra, according to the datasheet the lumen output at Tc = 25°C is 18931.
18931/328.32*4.867 = ~280

The table provided by citizen says 249.

tomate said:

Thx for the links guys.

So for example taking the CLU058-1825 3000K 80Ra, according to the datasheet the lumen output at Tc = 25°C is 18931.
18931/328.32*4.867 = ~280

The table provided by citizen says 249.

Click to expand...

Careful, it says pulsed, so you need to adjust to get Tj=25. Lumens will be a little higher.

Also, Citizen is using PPF between 400-700nm, so our calculated PPF is higher.

Also, the watts don't line up on that sheet, and I'm not sure what to make of that. Check out the difference. 249/2.12 = 117W.

tomate said:

I've send them a message today.
Funny thing is, after changing the language to polish which sets the shipping destination at the same time, the price drops. At the moment I would pay 11.80€ a piece with taxes and shippig costs.
So that is ~270€ for the 23 pieces I would need.

Click to expand...

So you have an address in Poland? Too bad I don't. I contacted them and they told me that they are not allowed to ship or to sell to Germany, nor will they do in the near future. Seems like they have no rights to sell them to Germans. Digikey is no option at the moment, the same chip is currently listed for almost 30€ each...

I'm from germany too, but I have family in poland. So no problem for me.
But they said it will take at least 7-8 weeks to deliver the COBs.

About to build my new light using 24 citizens clu048-1212. 6/36 inch heatsinks with 4 cobs on each. 2 fans on each heatsink. 6- hlg 240h-c1400b. What do u guys think bout this. Opinions please?

Good to know.

zombie thread alert. all info is 18 months old