Heat sink design 2

[82james82]

Does anyone have information on the design of heatsinks. Im lloking at using heatsinks to dissipate heat from circuits but need to know more about how best to design them. I would be grateful for any advice or direction to useful websites!

Cheers

 

[ScottyUK]

Aavid Thermalloy and IMI-Marston are both major manufacturers of heatsinks. Why on earth would you want to design one? Most people do the thermal calcs for their design and buy a suitable extrusion from one of the manufacturers.

Elsewhere in Eng-Tips I posted a link to Semikron's website. thread238-119812

There are some thermal design notes in there.





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If we learn from our mistakes,
I'm getting a great education!

 

[82james82]

thanks for the reply

My problem is not designing the heatsink, but how do i go about choosing which one i am to use.

thanks

 

[itsmoked]

Hi James.

The sites Scotty mentioned usually have tons of appnotes that explain the subject very well and in great detail.

 

[VEBill]

Another link:

http://www.aavidthermalloy.com/technical/index.shtml

Link to paper 'How to select a heatsink' is about 40% of the down (scroll down) the page.