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Heat sink question

8 ball

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Just a quick question on the building of lasers, i was just wondering, when you attach the heat sink to the driver do you use any type of thermal paste. If not, would this be a good idea to help keep the laser run cooler for a longer time?
Cheers Sam
 

8 ball

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Use common sense, if you dont attach something to the other thing it will fall off.
I am well aware of this law of physics :) I just wondered if people use thermal paste or just have the 2 components touching with no paste.
 

grainde

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Normally people heatsink drivers at high currents. This doesnt necessarily mean they are attached to the heatsink, but that they are glued to a chunk of metal (Cu or Al) which helps to dissipate the heat. The most common glues are Arctic alumina or Arctic silver. :beer:

Look at "hot option" from Jayrob or DTR in their build tutorials to find out more.

Edit: here are 2 examples from 2 of my builds. The Saik has the driver heatsinked to some copper and aluminium strips and then to the heatsink. In the second picture of a phobos host the driver was heatsinked to a piece of copper and then to the body of the host, not main heatsink. In both cases Arctic Silver was used.
 

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TheDukeAnumber1

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I've heard of people doing both. Either tightly press fitting the diode into a sink, or if the fit is less tight adding some thermal adhesive. It can go either way.
 

8 ball

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Thanks everyone this has helped me, I think I will use some paste just to be on the safe side :)
 




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