Listen now ....
Hellas (Aka Greece ,although wrong ! ) is a massive producer of Aluminium ..
( As first material ...) ..
So Aluminium is pretty cheap here ..(Specially the more "pure " / softer alloys ,because of their limited demand ... )
The heatsink we use is made here ..(Do not know where exactly ... )
Cost :
~12 € !!!! (For 2 kilos of Ally ...Heatsink shape extruded -non anodised (+10 € for black anodising )
But it is made of soft 1050 ally and has a base thickness of 10 mm ...
16 fins (30 mm "height " ) and with thickness starting at 5 mm! ending at ~2mm at fin edges ...
Pretty heavy chunk of ally ...
Soft ,easy to work with ,does a great job cooling ....
But ...
If you Ask me ,what I would have preferred instead ...
Same size exactly (everything same ! ) SK 85 of Fischer Elektroniks ..
(the one Guod uses in his new panels ...)
Best heatsink outhere ....
And of course there are the new "ceramics " ..
Light and really efficient ..
( made of Boron Nitride -Beryllia..
Beryllium Oxide (BeO), commonly referred to as beryllia, possesses a unique combination of thermal, dielectric, and mechanical properties which are highly desirable in electronic applications. No other material exhibits these characteristics. BeO ceramic conducts heat better than most metals, exhibits extremely low dielectric loss characteristics, possesses high electrical resistivity, and offers excellent strength properties. It provides all the desirable physical and dielectric characteristics exhibited by aluminum oxide and, in addition, offers higher thermal conductivity and lower dielectric constant.
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Beryllium oxide is a unique material for electrical and mechanical applications which require high thermal conductivity along with dielectric and mechanical strength. It is particularly well suited for use as a semiconductor heat sink and as a heat dissipation medium in miniaturized circuitry.
Heat sinks and other semiconductor parts are manufactured in a range of sizes readily adaptable to the basic requirements of the industry. Sizes, configurations, hole sizes and placements conform to conventional TO case sizes, and are maintained within close tolerances to facilitate assembly.
Available in any quantity, mostly from stock, beryllium oxide heat sinks more than justify higher costs than other materials by demonstrating higher temperature capability, realistic power vs. frequency relationships and greater cost effectiveness resulting from improved reliability.
American Beryllia manufactures a wide variety of custom BeO ceramic parts for various applications. Materials are prepared by dry pressing, isostatic pressing, hot pressing, tape casting, and extrusion machining. American Beryllia’s capabilities also include
machining metalizing and plating among others.
Check out "American Beryllia -dot- com " for more info ... )
BTW ...
Great choice of fans ...
