How about these ones
http://www.tglobaltechnology.com/datasheets/TG-X.pdf
Electrically insulated with up to 12 W/mK and with good pressure 0.1 to 0.15 thermal resistance... Would it be better than the Kerafol to your knowledge?
Thanks
Do
The answer to part 1 is that acrylic (tape) has a thermal resistance which is ~2000 times larger than copper.
Part Deux : Square Inch !
Part Deux : Square Inch !
Hi Do,
Take also a look at the goopless Bergquist silpad A2000, works very good for me.
Take also a look at the goopless Bergquist silpad A2000, works very good for me.
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0.15 C per square inch/W = 1C/W for 1cm2
For a TO247 => 0.18C/W
2.5 times more than Kerafol
For a TO247 => 0.18C/W
2.5 times more than Kerafol
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I'm surprise there's no other companies interested in competing with Keratherm Kerafol!
Anyways, back to ExtremA amplifier
Do
Anyways, back to ExtremA amplifier
Do
> I'm surprise there's no other companies interested in competing with Keratherm Kerafol!
It is not to difficult to understand.
Such a foil has to be thin to be effective.
But it also has to be a good insulator at the same time, e.g. at least 300V, preferably 1000V.
So the bulk material has to be some ceramics that is thermally conductive.
The best is Beryllium Oxide, which is now forbidden (Be is toxic) and unobtainium.
The next is AlN, which is expensive.
That leaves Al2O3, which is cheap and easily available.
Tightly packed Al2O3 powder still only has a volume fraction of about 65%.
You can now fill the void with a thermal plastic, and extrude them onto a carrier fabric.
And you will end up with something like a Kerafol.
Of course I have not forgotten the best material which has high thermal conductivity but also high electrical resistivity.
A diamond foil will be 60x better, but probably more than 100x more expensive.
Too bad that it is sandwiched between your device and the heat sink, and you cannot show it off.
🙂
Patrick
It is not to difficult to understand.
Such a foil has to be thin to be effective.
But it also has to be a good insulator at the same time, e.g. at least 300V, preferably 1000V.
So the bulk material has to be some ceramics that is thermally conductive.
The best is Beryllium Oxide, which is now forbidden (Be is toxic) and unobtainium.
The next is AlN, which is expensive.
That leaves Al2O3, which is cheap and easily available.
Tightly packed Al2O3 powder still only has a volume fraction of about 65%.
You can now fill the void with a thermal plastic, and extrude them onto a carrier fabric.
And you will end up with something like a Kerafol.
Of course I have not forgotten the best material which has high thermal conductivity but also high electrical resistivity.
A diamond foil will be 60x better, but probably more than 100x more expensive.
Too bad that it is sandwiched between your device and the heat sink, and you cannot show it off.
🙂
Patrick
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1 dollar extra to save 10C, or $10 for another 1C, difficult choice.
Anyone please read EUVL's article in Linear Audio.
It's completely free of charge, all you have to do is try not to blink your eyes.
Anyone please read EUVL's article in Linear Audio.
It's completely free of charge, all you have to do is try not to blink your eyes.
Jacco, could you give a more precise reference, since there are 10 linear audio books.
Thank you,😀
Eric
(Mr EUVL, you heard it, quit and get a regular electronics job, you're not suited for anything mechanics)
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