Colin, How much heat you moving? Does thermal resistance at the heatsink junction have to stay low, or extremely low. If you have to move a lot of heat, Chomerics has a process called Power Site that allows you to solder your device directly to the heatsink (see http://www.parker.com/chomerics/products/documents/powersite_cat.pdf.). Have you investigated thermally conductive adhesive tape? They don't have the mess of the thermal adhesives and they are repairable. Check out 3M http://www.3m.com/us/mfg_industrial/adhesives/html/tc_selector.jhtml or Bergquist http://www.bergquistcompany.com/therm.htm, they might give you some thermal management ideas. Good Luck, Gary Camac ----- Original Message ----- From: "Colin Weber" <[log in to unmask]> To: <[log in to unmask]> Sent: Monday, August 12, 2002 9:06 PM Subject: [TN] Thermal Potting Mix > We have a scenario where we want to put string of rectifier diodes in > series, onto > an aluminium heatsink, to conduct heat from them. What we envisaged doing is > soldering these diodes onto a single sided circuit board and potting this > assembly > onto the heatsink. > > My question is what is the most suitable thermally conductive potting mix to > use for this case, and will not let loose, or break free from the aluminium > over > time? > > > Regards, > > Colin Weber > > Regards, > > Colin Weber > > -------------------------------------------------------------------------- ------- > Technet Mail List provided as a free service by IPC using LISTSERV 1.8e > To unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet > To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) > To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest > Search the archives of previous posts at: http://listserv.ipc.org/archives > Please visit IPC web site http://www.ipc.org/html/forum.htm for additional > information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 > -------------------------------------------------------------------------- ------- > --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------