Lighting Passive heatsinks EU
- Thread starter KonopCh
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Eekman
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I recently set up with components distributers in some massive 400-500 piece orders. They are a huge company and may possibly ship to your area. It's worth a shot.
Which company?
CDI or components distributers
@BigSm0 what means thermal resistance? I know lower the better. But... If it's 1,2°C/W... so CXB3590 @1,4A gives 27W heat... so 32°C on heatsink surface or above ambient?
Is any logic to buy bigger heatsink for above COB? Or isn't worth it? Let's say one with 40W dissipated power, and other with 75W. As long as it's only 27W heat from COB...
Is any logic to buy bigger heatsink for above COB? Or isn't worth it? Let's say one with 40W dissipated power, and other with 75W. As long as it's only 27W heat from COB...
This is very tricky. I read up on this awhile back and they usually state the specs on a ridiculously high efficient light source. One that can't even come close to reality like 88% efficient. Usually the temps they give you are temps above ambient and don't factor in the actual heat watts but the wall watts. So they might say a 75 watt light will be 32c above ambient. That's a 80% efficient light first off and 32 above your 80 degree room.
I should look into it more but I get lazy since the heatsinks saying the wattage. My testing has shown that even a very small fan 10 feet away is enough to cut the temps in half though. The premade kits from timber use undersized heatsinks that's why I do know a little about it.
I should look into it more but I get lazy since the heatsinks saying the wattage. My testing has shown that even a very small fan 10 feet away is enough to cut the temps in half though. The premade kits from timber use undersized heatsinks that's why I do know a little about it.
Sorry didn't see the last message. Check components Distributers. Punch in passive fin and you will see a huge list with the listed wattage. This can help you figure what you will need as a comparison. Northern grow lights too. The Sst-120 is rated for 50w
