Cree CXB3590 COB grow light
Cree CXB3590 COB grow light
Cree CXB3590 COB grow light
Cree CXB3590 COB grow light

Cree CXB3590 COB grow light

Regular price R 1,300.00

One of the most efficient LEDs in the world. 


3500K spectrum in stock - (good general purpose flowering spectrum)


We have Meanwell drivers in stock for most configurations, and can customise a build to your wattage requirements.  With COB (Chip on board) LEDs, lowering the current increases the efficiency.  But this reduces the power output. 

The COB runs at 36V, so,

At 1.4A, the light will put out  36 x 1.4 = 50W. 

At 2.1A, the light will put out 36 x 2.1 = 75W.

Running the COB above 2.8A will get you 100W, but at this power output, the efficiency of the COB is not much higher than "Chinese" LED alternatives, which are cheaper.

We recommend 1.4A or 1.75A for a nice efficient 50W light, which will be brighter than any 50W of LEDs on the market.  The electricity savings can pay for itself over its lifespan.

The light pictured comes with a reflector and holder, thermally bonded to our largest heatsink, and a fan.  It is really overkill for cooling.


Link to Technical Product description

Link to Cree CXB3590 vs. Bridgelux Vero29 showdown


Price listed is for the example light below, without a driver.

- Cree CXB3590 COB, with holder and reflector: R900

- 200x200mm Aluminium heatsink: R240

- SUNON Maglev quiet fan: R60

- JST and DC connectors: R10


The passive cooling 80W black anodized heatsink has to be imported, so is more expensive than the active cooling.