Heatsink Resources Survey

[amplitone]

The majority of the projects here seem to require large heatsinks in their design. They seem to be difficult to find and generally expensive.

To help others overcome this stumbling block, I am hoping that those who have found good places to buy heatsinks will reply to this thread.

http://www.imimarston.co.uk
-really nice aleph style case can be made for US$500

http://www.r-theta.com
-quoted US$200 for two heatsinks for aleph5

http://www.meci.com
-various cheap smaller heatsinks for the PCB components
-cheap large caps for aleph projects

As you can see, I haven't had much luck finding a cheap heatsink that can dissipate >100W a piece

 

[rborer]

http://www.fischerelektronik.de
- Fischer has some nice extrusions, and even ready-made cabinets.

 

[mlloyd1]

Yes, it's difficult for DIYers to obtain large dissipation heat sinks and suitable chassis! I don't have the tools or ability to to my own machining. For my heavy duty class A sinks, I also ended up going the custom route with R-Theta for heat-sinks. In the past, I have used some Fischer sinks obtained from Erno Borbely to use with some projects I purchased through his company. I recently visited his site and noticed he sells chassis with integrated heat sink.

Michael

 

[Elkaid]

I found the following manufacturer :

http://www.thermaflo.com/index.shtml

I'll contact them tomorrow. Hopefully, they seems to care about diyers and small quantities which is not the case for all manufacturers. (Well, not every distributors).

Regards

 

[millwood]

another source is to go ebay and you will find some of them - not cheap but at least available.

On a similar note: does anyone know where I can find 1) large sheet of silpads? I want to be able to cut my own shapes; and 2) mounting kits like the washers? I have been using small plastic tubing that isn't the most desirable thing in the world.

 

[Peter Daniel]

Digi-Key carry it.

 

[Elkaid]

I think the digikey part number for the mounting kit is

RP450-ND
RP451-ND
...
RP457-ND

depending on diameter needed. They'll replace the little tube you're currently using and you'll be able to use metallic screw without any contact between the IC and the heatsink.

As for the silpad, there's really too much of them to list them all

I hope this helps !

 

[dutch diy]

I know Schuro can order any heatsink (or other item) from Fischer at small amounts. They also have heatsinked 19" cabinets. Heatsinking pad in sheets is available.
check the Fischer site and download the I-group pdffor all mounting / pads and the A group for heatsinks.

 

[grimberg]

I purchased heatsinks for my Aleph-5 monoblocks from Conrad Engineering and am very happy with both the quality and the price. You can contact Julian Wales at:

Ph.: 61 3 9387 7106
Fax.: 61 3 9387 2896
Email: conrad.aus@bigpond.com

 

[bigparsnip]

Don't forget, Conrad now have a web page for their heatsinks, you can find it here

Andrew.

 

[Elkaid]

Oooops

2) mounting kits like the washers? I have been using small plastic tubing that isn't the most desirable thing in the world.

Sorry, I made a little mistake about the part number mentioned previously. Here are the correct ones :

Molded Nylon Insulators

RP330-ND
RP331-ND
...
RP390-ND

P.957, May-August catalog

 

[cpemma]

RS Online in the UK have a decent range, many Marston sinks.

They sell to the public no problem, but you don't get the free delivery that account holders enjoy. Register (free, no-spam) to get the datasheets.

 

[GST]

I found this supplier mentioned by a number of people on the forum. People say the prices are reasonable.

http://www.mmmetals.com/index.html

I haven't checked prices or availability with them yet. They are located in Texas.

 

[cpemma]

The Marston link in post#1 bounced me somewhere OT, correct page is http://www.imiheatsinks.co.uk/ and look in the extrusions catalogue.

I don't think they sell direct, but there's a list of their outlets around the world on site.