Thermal Analysis

The old MIL-STD-275E spec page 34 and 36 has charts in it that give you a guide that is de-rated based on the Military standards. http://www.dscc.dla.mil/Downloads/MilSpec/Docs/MIL-STD-275/std275.pdf

According to what I have heard, these charts are approximately 50% de-rated... and based upon phenolic material. There is some impressive work being done by Mike Jouppi, "Thermalman", that gives more realistic numbers to a thermal design. http://www.thermalman.com/

If you want to use a free online calculator there's one developed by Brad Suppanz at http://www.geocities.com/CapeCanaveral/Lab/9643/TraceWidth.htm

Also, a good book on Thermal is "Cooling Techniques for Electronic Equipment, Second Edition" by Dave S. Steinburg pub 1991 by John Wiley and Sons, Inc. ISBN 0-471-52451-4

Also there is a publication called "Electronics Cooling" online at http://www.electronics-cooling.com/html/articles.html

Of course the heat sink manufacturers are very helpful to get more info on thermal designs - http://www.aavidthermalloy.com/technical/index.shtml

Thermal Interface materials

http://www.bergquistcompany.com/

http://www.electronics-cooling.com/Resources/EC_Articles/SEP96/sep96_01.htm

http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/26951.pdf

http://www.lairdtech.com/pages/products/Thermal-Interface-Materials.asp

http://www.icepak.com/prod/icepak/solutions/articles/iceart10.htm

http://www.coolermaster.com/index.php?LT=english&Language_s=2&url_place=discovery_detail&serial=56