I have used these from mouser:
http://www.mouser.com/index.cfm?han...ductid=358711&e_categoryid=80&e_pcodeid=53201
The data for the 4180 pad is here:
http://www.aavidthermalloy.com/products/standard/access/insulate.shtml
The surface of the package is covered, and the pad is thick enough to isolate it from the heatsink.
The 4170 pads are smaller, but I used them for TO-264 devices once as well:
http://www.briangt.com/gallery/jeetamp/Resize_of_amp_016
Most of the surface is covered on the bottom of the package, and the heat transfers quite well. The 4180 pads are quite a lot bigger, and work perfect for the TO-264 IMO.
--
Brian
http://www.mouser.com/index.cfm?han...ductid=358711&e_categoryid=80&e_pcodeid=53201
The data for the 4180 pad is here:
http://www.aavidthermalloy.com/products/standard/access/insulate.shtml
The surface of the package is covered, and the pad is thick enough to isolate it from the heatsink.
The 4170 pads are smaller, but I used them for TO-264 devices once as well:
http://www.briangt.com/gallery/jeetamp/Resize_of_amp_016
Most of the surface is covered on the bottom of the package, and the heat transfers quite well. The 4180 pads are quite a lot bigger, and work perfect for the TO-264 IMO.
--
Brian
I used insulators for TO-3P package on my TO-264's and they worked just fine.
You can find them at Parts Express for $1.50/10
Insulators
You can find them at Parts Express for $1.50/10
Insulators
If you don't mind spending a few extra bucks, the Bergquist K-10 appears to be an excellent choice. The TO-247AC type (linked to below) will completely cover a TO-264. I plan on using these for my amp.
Digikey BER120-ND
Digikey BER120-ND
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