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Old 12th November 2005, 03:07 AM   #1
Join Date: Mar 2005
Location: Australia
Default very large/huge heatsink suppliers in Australia

Hi everyone
do you know of suppliers/manufacturers of huge heatsinks
in Australia
i need huge heatsinks soon

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Old 12th November 2005, 05:33 AM   #2
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Greg Erskine's Avatar
Join Date: Jan 2002
Location: Sydney/Australia
Hi mastertech,

You're not tricking me.

You being a CLASS-A SPECIALIST and a professional you would already know all the heatsink sources in Australia.

Which suppliers have you been using so far?

Greg Erskine
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Old 12th November 2005, 05:55 AM   #3
AKSA is offline AKSA  Australia
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Join Date: Sep 2001
Location: Melbourne, Australia



Best heatsinks in the country, precision cast, beautifully machined and finished.


Aspen Amplifiers P/L (Australia)
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Old 12th November 2005, 11:35 AM   #4
Join Date: Mar 2005
Location: Australia
Hi Hugh, thank you very much for your help



hi Greg honestly i am not kidding you, ive been using
jaycar and altronics

good to talk to you

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Old 12th November 2005, 12:12 PM   #5
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Join Date: Jan 2002
Location: Sydney/Australia
Originally posted by mastertech
hi Greg honestly i am not kidding you, ive been using
jaycar and altronics

I think you will find the larger Jaycar and Altronics heatsinks are from Conrad but Conrad has bigger ones available that you can not get from Jaycar and Altronics.

Greg Erskine
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Old 12th November 2005, 02:29 PM   #6
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bear's Avatar
Join Date: Apr 2002
Location: New York State USA
Default Roll Ur Own?

You might want to consider "rolling ur own."

I've done it sucessfully with a class A SE amp that blows off about 125 watts of nothing but heat.

It's been done by a number of commercial manufacturers including Phase Linear and Altec in the past.

this shows a picture of one implementation.

The basic idea is to have fins made out of aluminium by a sheet metal fabricator (CNC preferred for the holes) to your spec, size and thickness which are then affixed to a thick aluminum back plate (0.250" to 0.4375" or more, if needed) that has matching holes precisely drilled.

The overall dimensions can be determined by the standard heatsink calculations found in most heatsink mfrs catalogs or websites.

Use heatsink compound between the fins and the back plate.

You can have the parts anodized black or another color for best "look".

I made mine double sided, and oversized for the thermal load.

The biggest advantages to this scheme are:
- other than buying "surplus", way less expensive than an equivalent extruded heatsink purchase in less than huge quantities.
- completely customizable size and shape
- much "taller" fins than can be extruded
- can be double sided if needed
- can be cut and fit to the next project as required
- you don't need a milling machine to cut the fins away if need be

- you need to buy the parts from a fabricator (needs to fit)
- slightly less thermal transfer to the fins than an extruded unit
- you have to assemble it with screws and nuts
- there may be some finishing operations needed if cosmetics are important (not a big deal, imho)
- doesn't come pre-anodized, but most metal shops can help you find anodizers, or use one now, in case you can't figure that out on ur own.

http://www.bearlabs.com -- Btw, I don't actually know anything, FYI -- [...2SJ74 Toshiba bogus asian parts - beware! ]
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Old 13th November 2005, 12:01 PM   #7
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Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default In my point of view, everything that comes from Australia is good, even the bull ship

As Australians are a very special people, my second home.

If someday i move....my destiny is for sure Australia.


Dx Blame ST with a tube preamp. recorded with Xperia cell phone, https://www.youtube.com/watch?v=Qjs32J0gdj0; https://www.youtube.com/watch?v=nhrZ...vDnDhEpNv_XVxg
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