Does anyone know what the grey, rubber-like thermal pad material is called? I need some rather big pieces for a Crown amplifier, probably about 3x12 inches.
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Re: Thermal pads
Do you mean Gap Pads?"Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin slitting throats." - H.L. Mencken -
Re: Thermal pads
Is that what they are? All I know is they the provide electrical isolation from the heatsink, and also thermal conductivity, without using separate thermal paste.Comment
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Re: Thermal pads
I had that rather thick, soft stuff in mind...often found in CD/DVD drives between bridge chips and the metal case...or on VGA cards between HS and RAM chips.
On the other hand, there are silicone pads. They're thin and rather rigid (often reinforced with fiberglass)
e.g. http://www.lairdtech.com/pages/produ...-Materials.asp"Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin slitting throats." - H.L. MenckenComment
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Re: Thermal pads
Two major mfrs of thermal pads are Bergquist and Chomerics. They have a dizzying array of products. One, the other or both are carried by Digi-Key. Go for low thermal resistance series.PeteS in CA
Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
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To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
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Re: Thermal pads
[QUOTE=kikkoman]I had that rather thick, soft stuff in mind...often found in CD/DVD drives between bridge chips and the metal case.../QUOTE]
Yes, the stuff used in CDROM drives is the same thing... that is what I'm looking for.Comment
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Re: Thermal pads
Ditto on ordering thermal gap pads from DigiKey, even though they're pricey.
I made the mistake of trying to save cash by buying from Arctic Cooling. They sent me 3M 467MP adhesive pads (i.e. for mounting artwork, not transferring heat.) What frightens me is that I have one of Arctic's VGA cooling products in my PC, and I bet they used the same stuff on it.Comment
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Re: Thermal pads
Zallman does use the same adhesive pads on all the GFX coolers RAM sinks.
I would ad to this discussion, that not all of those soft pads are safe for high voltage. There are a bunch of them, who are not meant to be used in circuits where electric isolation is required.
Always check the data sheet before putting it on a not isolated HOT in a CRT TV set.Comment
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Re: Thermal pads
The pads I need are not adhesive, but I could use some of those for other stuff too.Comment
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Re: Thermal pads
Well... we called it Radiation Rubber Sheet. Some japanese called it "cooling rubber". The one I use in my design is from INOAC co. The product name is MasaSheet.
http://www.incom.co.jp/productnavi/i.../product/16006Comment
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Re: Thermal pads
The actual manufacturer of the rubber sheet is this one:
http://www.inoace.co.jp/
The website is available in Japanese only. U can contact the following for details and specification.
kikaku@inoace.co.jpComment
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PeteS in CA
Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
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To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
****************************Comment
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Re: Thermal pads
The Radiation Rubber Sheet that I used is this one ...
Hope it is what u're looking for.Attached FilesComment
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Re: Thermal pads
The Berquist alternative is often called a "sil-pad" or silpad. One other option is mica sheeting you can cut to any size you want.Comment
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Re: Thermal pads
the sil-pads are a whole different thing.... they're much thinner and intended for use between e.g. a transistor and a heatsink. They need PRESSURE, and often come in pre-cut sizes for various cases.
The Gap Pads however just provide extra thermal relief, for instance between the PCB and the metal case, but not for the high-power parts. That's why they're called Gap Pads.Last edited by kikkoman; 11-10-2007, 05:25 AM."Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin slitting throats." - H.L. MenckenComment
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Re: Thermal pads
I think those Sil-pads are, what Maxxarcade initially was talking about.
Personally i rather prefer mica, as they are profen reliable isolators.
And i think adding thermal grease isn`t that hard for a non production working environment.Comment
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Re: Thermal pads
If you use thermal compound (grease) remember that more isn't better. Use a really thin coat.
Chomerics and Bergquist have been doing thermal pads for nearly 30 years that I'm aware of. Those are good products. The Gap Pads and gap fillers are a somewhat newer product, and my 11-8-07 post linked to Chomerics's and Bergquist's pages for those product lines. With those products you need to be careful to choose a thickness that will fill the gap between your hot components and the metal that will be acting like a heatsink, but which is not so thick that you bow PCBs (and crack components - BTDTGTTS).PeteS in CA
Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
****************************
To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
****************************Comment
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Re: Thermal pads
The ones I needed were the Sil-pads. I got some originals directly from Crown Audio for about $3.00 each. Thanks everyone for the help!Comment
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