Hi Kjell, All,<br><br>You find a lot of these heatsinks from computer 
shops, e.g. I recently purchased a heatsink originally used for a 
northbridge of a PC mainboard for the FPGA:<br><br><a href="http://www.caseking.de/shop/catalog/Zubehoer/Chipsatz-Kuehler/Xilence-Northbridge-Chipsatz-Kuehler-aktiv-black::6375.html" target="_blank">http://www.caseking.de/shop/catalog/Zubehoer/Chipsatz-Kuehler/Xilence-Northbridge-Chipsatz-Kuehler-aktiv-black::6375.html</a><br>


<br>I also use RAM coolers for the ADC, etc. You probably find these in any computer shop.<br><br clear="all">73, Hermann<br>DL3HVH<br clear="all"><br>