From what I see on the news on an almost daily basis, the material will not have a chance to decompose from the UV in southern California. The house will probably: 1) Slide down a hill 2)Be destroyed by wildfires 3)Be crushed in an earthquake, long before the sun has a chance to do anything to it. Why do they build houses on the side of a pile of wet sandstone anyway? Doesn't take much of a lightbulb to figure out that even with high land values, not being able to sleep at night for fear of one of the above happening just isn't worth it. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Ingemar Hernefjord (KC/EMW) Sent: Thursday, June 02, 2005 1:08 AM To: [log in to unmask] Subject: Re: [TN] FR-4 Thermal Conductivity Constant?? ...and you can etch the copper so it fakes bricks or oregon pine or what you like. Question is for how many years such a house will withstand the UV in southern california? Ingemar -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of John Burke Sent: den 2 juni 2005 00:47 To: [log in to unmask] Subject: Re: [TN] FR-4 Thermal Conductivity Constant?? Typically, from memory, it is around 0.2 Watts/Meter/degree centigrade. In other words it would make excellent house insulation.............8-) John Burke ------------------------------------ Avanex John Burke Senior Manager RoHS Compliance [log in to unmask] 40919 Encyclopedia Circle Fremont CA 94538 tel: 510 897 4250 fax: 510 979 0189 mobile: 510 676 6312 ------------------------------------ -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of John Parsons Sent: Wednesday, June 01, 2005 3:31 PM To: [log in to unmask] Subject: [TN] FR-4 Thermal Conductivity Constant?? Happy Wednesday to all, I have a customer asking for the thermal conductivity constant for FR-4. I have seen this spec'd on some specialty laminates, Rogers, GIL for instance, but not on any "FR-4" laminates. Would this spec likely be available from the laminate supplier? If not, why? Tell me why I see it on the big $$$ high frequency laminates but not the "cheap stuff". TIA John Parsons --------------------------------------------------- Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------