[Amps] making aluminum heat sinks black

[Will Matney]

Thanks Paul! I'll look it over later on this evening.

Best,

Will

*********** REPLY SEPARATOR  ***********

On 7/22/06 at 10:05 PM Paul Christensen wrote:

>> "The black color only has to do with infrared radiation, the same as 
>> white, and nothing to do with the heat transfer from the device to the 
>> heatsink....The term insulator is the key word here (electrical or heat) 
>> where I think it can actually impede the thermal transfer between the 
>> device and heatsink by some amount. I would rather have that junction be 
>> bare aluminum...,
>
>Agreed, Will.  If you look my original message, I was speaking in terms of 
>heat dissipation and not device heat transfer.
>
>I found some information concerning heat-sink design that may be of
>interest 
>for those engaged in the discussion.  However, like anything else found on 
>the web, its use as an authoritative source should be considered suspect 
>until verified.  Nevertheless, the author does make some good points 
>concerning practical heat-sink applications, and includes some comparisons 
>between different materials and coatings.
>
>http://sound.westhost.com/heatsinks.htm#15
>
>http://sound.westhost.com/heatsinks.htm
>
>Paul, W9AC