Arjun, atotech compares regular heatsink vias on a PCB with vias filled with their special heatsink paste. This paste just increases the thermally conductive cross section thru the PCB to get the heat into the inner layers quicker than without filling. You have to pay attention to the details. You can also see that they only compare their new technologie with thermal conductive adhesive Film. If you use thermal conductive paste instead, you will be closer to their performance. BR Gert ---------------------------------------- Absender ist HARTING Electronics GmbH & Co. KG; Sitz der Gesellschaft: Espelkamp; Registergericht: Bad Oeynhausen; Register-Nr.: HRA 5596; persönlich haftende Gesellschafterin: HARTING Electronics Management GmbH; Sitz der Komplementär-GmbH: Espelkamp; Registergericht der Komplementär-GmbH: Bad Oeynhausen; Register-Nr. der Komplementär-GmbH: HRB 8808; Geschäftsführer: Edgar-Peter Duening, Torsten Ratzmann, Dr. Alexander Rost -----Ursprüngliche Nachricht----- Von: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] Im Auftrag von Arjun Bingipur Gesendet: Freitag, 6. Januar 2012 13:24 An: brian@xxxxxxxxxxxxxxxxxx Cc: si-list@xxxxxxxxxxxxx Betreff: [SI-LIST] Re: Thermally Conductive Adhesives As I understand from the link below, it is treated as an alternative to copper heat sink. http://www.atotech.com/products/electronics-materials/surface-protection/heatsink-paste.html Regards, Arjun Brian Rautio <brian@xxxxxxxxxxxxxxxxxx> 06/01/2012 12:01 To Arjun Bingipur <Arjun.Bingipur@xxxxxxxxxxxxxxxxx> cc "<si-list@xxxxxxxxxxxxx>" Subject Re: [SI-LIST] Thermally Conductive Adhesives Not really an SI question but an easy answer. The information you're looking for is limited (or non-existent) because the application isn't as you are thinking. Thermal paste is not a replacement for "conventional copper heatsinks," but rather an agent used to fill in any air gaps resulting from roughness in the interface between a die/IC/package/etc. and the heatsink material itself. Without it, such air gaps serve as an unfortunately good thermal insulator. Some thermal pastes include an epoxy or adhesive to mechanically fasten the heatsink as well. Thanks, Brian On Jan 6, 2012, at 6:48 AM, Arjun Bingipur wrote: > Hi, > I would like to ask the experts a question at the risk of it being non-SI > related. > > I'm in the process of evaluating Heat Sink Paste technology instead of > conventional copper heat sinks. > > Although there are very good technical papers on thermally conductive > adhesives and various other technical specifications, the information is > quite limited when it comes to actual application. > > I would like to hear from the group if there are any real time success > stories used in mass production? Failure modes? Trade offs? Any one tried > it especially in the Automotive industry? > > Any information will be much appreciated. > > Regards, > Arjun > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > > List technical documents are available at: > http://www.si-list.net > > List archives are viewable at: > //www.freelists.org/archives/si-list > > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu