I think that was clear. I would only suggest a tolerance applied to the overall thickness. Most shops should be able to build that with out any problems. Regards, James Hofer Director of Operations Accurate Circuit Engineering 3019 S. Kilson Dr. Santa Ana Ca. 92707-4202 714-546-2162 work 714-473-6127 cell [log in to unmask] ----- Original Message ----- From: "Richard" <[log in to unmask]> To: <[log in to unmask]> Sent: Wednesday, May 11, 2005 11:29 PM Subject: [TN] Thick PCB Fab Construction Question > Hi, > This is a question to all the fab people. > My project requires a PCB that will have a finished thickness of 4.7 mm. I > haven't found anyone who has a standard thickness very close, but know that > it's possible to build much thicker boards. What is the best way to call > out such a construction? > > The other significant details are: > > - 2 layers, 1/2 oz. cu > - No plated through holes > - Gold flash finish, no soldermask > - Material will be in two versions, one FR4 and one in a hi-freq.substrate > - Boards will have an additional "cover" substrate layer laminated over the > top, but this is not included in the 4.7 mm thickness > > I hope that was clear enough. > > Thank you very much for any light you can shed on this. > Richard > > --------------------------------------------------- > 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 -----------------------------------------------------