Hi Jeffrey, Used these guys in the past, had problems meeting a schedule, but it's been a while ago. They may have gotten better with their deliveries. We used something they called T-Clad: http://www.bergquistcompany.com/thermal_substrates.cfm Next one we used was Tyco, but Tyco sold it's whole PCB business to TTM Technologies: http://www.ttmtech.com/manufacturing/man_equipment.jsp They still list Thermagon, so you check with them... Steve -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of McGlaughlin, Jeffrey A Sent: Monday, December 01, 2008 7:57 AM To: [log in to unmask] Subject: [TN] Alumina Substrate To All, I have been ask to identify a source for some small high frequency circuits on 5 mil thick Alumina substrate. Can anyone recommend a source in the US (absolute requirement)? TIA, Jeffrey A McGlaughlin, CID Engineering Designer Battelle 505 King Ave Columbus Ohio 43201-2693 Phone (614)424-7582 --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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 15.0 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 -----------------------------------------------------