Thermal Management

dirtyoldb · Apr 18, 2020

Anyone know where to get 600mm length, 25mm wide heatsink to run Samsung S02 SL-B8V1N30LAWW

Only place I can find any in the UK is lumitronix.
Priced €8.89 2k/w thermal capacity.

Aluminum profile 600mm for SMD high power modulesAluminum profile 600mm for SMD high power modules

Alu Profil 600mm für SMD High Power Module: ✓ Aluminiumprofile & Kühlkörper, ✓ geeignet für SMD High Power Module, ✓ Marke: LUMITRONIX. Jetzt auf LEDs.de kaufen.

www.lumitronix.com

coreywebster · Apr 18, 2020

You could try checking diyleduk , email him if he doesn't have anything on display

Phat J · Apr 19, 2020

On the topic of heatsinks and building your own light, can you use larger heatsinks than necessary for better heat dissipation? Like using 2" wide heatsinks and 1" wide led strips. Would it help extend led lifespan or help slow the degradation of the strips?

Renfro · Apr 19, 2020

Phat J said:
On the topic of heatsinks and building your own light, can you use larger heatsinks than necessary for better heat dissipation?

To a point more surface area can help dissipate the heat but there are limits. Thicker is better than wider IMO.

dirtyoldb · Apr 19, 2020

Renfro said:
To a point more surface area can help dissipate the heat but there are limits. Thicker is better than wider IMO.

My wife said that too .. lol.

I'm looking for a flat around 25mm to 30mm max width. Black oxidized with nice thick height.

Most are only 10mm that I have seen so far.

dirtyoldb · Apr 19, 2020

Favourite so far.

Observe & Report · Apr 19, 2020

instead of buying heat sinks just buy more strips

1212ham · Apr 19, 2020

dirtyoldb said:
Anyone know where to get 600mm length, 25mm wide heatsink to run Samsung S02 SL-B8V1N30LAWW

Only place I can find any in the UK is lumitronix.
Priced €8.89 2k/w thermal capacity.

Aluminum profile 600mm for SMD high power modulesAluminum profile 600mm for SMD high power modules

Alu Profil 600mm für SMD High Power Module: ✓ Aluminiumprofile & Kühlkörper, ✓ geeignet für SMD High Power Module, ✓ Marke: LUMITRONIX. Jetzt auf LEDs.de kaufen.

www.lumitronix.com

At that power density (1A,11.1v, 280mm long) I think you can run without heat sinks or just use aluminum angle or channel.

LED and other Lighting

Growing with LEDs / Inductive / Plasma etc.

www.rollitup.org

GBAUTO · Apr 19, 2020

1212ham said:
At that power density (1A,11.1v, 280mm long) I think you can run without heat sinks or just use aluminum angle or channel.

LED and other Lighting

Growing with LEDs / Inductive / Plasma etc.

www.rollitup.org

Exactly. I think that the strips are designed to operate within tolerance running at test current in 'free air'. Adding any thermal mass will be beneficial-I use 0.125" thick aluminum strips to mount my F strips.

dirtyoldb · Apr 20, 2020

Observe & Report said:
instead of buying heat sinks just buy more strips

I feel your wife's pain.

You must have a very thin heatsink

dirtyoldb · Apr 20, 2020

1212ham said:
At that power density (1A,11.1v, 280mm long) I think you can run without heat sinks or just use aluminum angle or channel.

LED and other Lighting

Growing with LEDs / Inductive / Plasma etc.

www.rollitup.org

Thank you, so many wise men on here all wanting to show how big their heatsink are...

Pity for most..

So thanks to ones who actually want to help.

Renfro · Apr 20, 2020

Observe & Report said:
instead of buying heat sinks just buy more strips

The better idea honestly. More chips driven softly will give better coverage and run more efficiently.

dirtyoldb · Apr 20, 2020

Yea seen this before..

Just wanted to check didn't dissipate that much heat..

They run at hotter than my little s02 for veg tent.

Observe & Report · Apr 20, 2020

dirtyoldb said:
You must have a very thin heatsink

I don't have any heatsinks because strips aren't designed to be used with them. That's why they have a poorly conductive fiberglass PCB instead of a metal core one. If you think you need a heatsink then you're running your strips too hard and should use more strips and/or less power.

dirtyoldb · Apr 20, 2020

Plan to run more than one set.

Just this set just now. Only for veg area.

Next one will be for main bloom tents.

dirtyoldb · Apr 20, 2020

Better explanation than just get more strips.

Plan to use two or three in similar design.. later once more funds..
Two of these designs will cover a 3x3
If not mistaken.

This being my first build. Being pressured by mrs to make sure it's safe as in a loft.

1212ham · Apr 20, 2020

Observe & Report said:
I don't have any heatsinks because strips aren't designed to be used with them. That's why they have a poorly conductive fiberglass PCB instead of a metal core one. If you think you need a heatsink then you're running your strips too hard and should use more strips and/or less power.

Actualy, some are fiberglass and some are aluminum. The need for a heat sink depends on power density. A 1120mm long Bridglux EB strip running at 30w doesn't need a sink, an F series strip running at 100w does.

Observe & Report · Apr 20, 2020

1212ham said:
Actualy, some are fiberglass and some are aluminum. The need for a heat sink depends on power density. A 1120mm long Bridglux EB strip running at 30w doesn't need a sink, an F series strip running at 100w does.

Thanks for the correction, I've never used Samsung because every time I ran the numbers I found that they cost a lot more for only a little more light.

dirtyoldb · Apr 21, 2020

Figures at 1A /1.4A / 1.6A.
12 in series according to Samsung calculator

dirtyoldb · Apr 23, 2020

Waiting on some heatsinks from China.
Got a great deal £30 for 25mm wide 12mm thick 24 in total.
Won't be here till July :-(

So got this aluminium flat bars 10mm thick to make do till they arrive.

Running 12 strips on hlg h185 C1400B on one.
Build the exact same 12 strips on another rig, again using hlg H185 C1400B.
Two rigs, that way I can have more control than one big light as explained above.

Thermal Management

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