On Feb 15, 2009, at 7:56 AM, Electron wrote: > I will try to use the DELTRON 456-0050 aluminium case the way you > said, > if it fails (too high temperature inside) then it's epoxy resin time. Why do you assume that epoxy resin won't cause thermal problems of its own? It's essentially a thermal insulator, after all, unless substantially filled with alumina or some other thermally conductive insulator. Chips that didn't USED to need a heatsink might not be happy coated with plastic... BillW -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist