DIY LIGHT BULD - Samsung F-Series Strips

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Purp Drama

New Member
Hi all, I'm new to the board but have been a lurker for some time now!

I have a friend who is good with electronics and I'm going to get him to build me a light.

I have a 800x800 Tent and wanted to use 4 Samsung F-Series strips ( SI-B8V521560WW ) with a MeanWell HLG-320H-48B‎ driver and dimmer.

I'm basically looking to run it around 240w and I'm having a nightmare finding heatsink strips!

I've seen people running these strips without heatsinks and reducing the heat by adding more strips etc..
But I'd like to have some kind of heatsink, I don't know if sticking them on a couple of sheets of aluminium and adding some sinks on the back will work?

I should mention I'm in the UK and don't have great options for the heatsinks. Any advice will be appreciated!

Thanks

Drama.
 
GBAUTO

GBAUTO

Well-Known Member
I use some of the 44" double rows as outriggers on my arrays. Each of the strips is only driven to 60w, mounted to 2"x .125" aluminum strips as a stiffener. They barely get above ambient temps and I believe they are designed to be pretty much free-floating at test current, so I'd look at using some simple flat stock to mount them on.
Edit: after looking closer at specs, I think that it'll be easier to run 6 of your strips . That will get them closer to test current and should allow you to run without dedicated heatsinks.
 
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coreywebster

coreywebster

Well-Known Member
Purp Drama said:
Hi all, I'm new to the board but have been a lurker for some time now!

I have a friend who is good with electronics and I'm going to get him to build me a light.

I have a 800x800 Tent and wanted to use 4 Samsung F-Series strips ( SI-B8V521560WW ) with a MeanWell HLG-320H-48B‎ driver and dimmer.

I'm basically looking to run it around 240w and I'm having a nightmare finding heatsink strips!

I've seen people running these strips without heatsinks and reducing the heat by adding more strips etc..
But I'd like to have some kind of heatsink, I don't know if sticking them on a couple of sheets of aluminium and adding some sinks on the back will work?

I should mention I'm in the UK and don't have great options for the heatsinks. Any advice will be appreciated!

Thanks

Drama.
Click to expand...
Yeah its tricky

diyleduk.com used to sell heat sinks for his strip builds, not sure if still sell them or just his full builds these days but you could email him and ask.

If not you could import from china or US.

Or try aluminiumwarehouse.co.uk and build something using multiple U channels.
 
T

TheGreatSouthern

Well-Known Member
Purp Drama said:
I should mention I'm in the UK and don't have great options for the heatsinks. Any advice will be appreciated!

Thanks

Drama.
Click to expand...
I know how counter intuitive it sounds, but samsung strips with the LM561c and LM302b chips don't need a lot of thermal management. you look at them out of the box and think they're going to catch fire because they are just on a PCB, but the damn things are so efficient you don't need much of a heat sink unless you drive them at 200% of binning current.
I just stick mine to 25mmx25mm aluminium extruded hollow section. you could also use 40mmx40mm aluminium angle. I run mine at about 160% of binning current and I have a circulation fan blowing across them, I lay cut stems across them to dry and they don't even get hot enough to dry weed. The alloy is cool to the touch most the time. If you havent bought your strips yet consider Q562A strips, they are a little more expensive but quite a bit more efficient, so will run cooler and cost less to power. Also consider using 4000K, counter intuitive again I know but when you look at the spectral curve for the 4000K and compare it to the 3000 and 3500K charts you'll see there is not a lot of difference in the amount of red light but the 4000K has so much more energy in other parts of the spectrum and a significantly higher light output for the same amount of power.
 
OJAE

OJAE

Well-Known Member
just saw someone make a light with samsung strips and they used an industrial cookie sheet that was quite thick, maybe find out how thick the heatsink should be and try finding a large thick baking tray from a catering supply place or somewhere like that.
 
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