Sure it's covered, under "must meet customer requirements" Read 3.6.2.11, notice also it says plating/coating thickness and the reference to copper thickness (post final finish?) in relation to testing of the final, finished product, does not consider copper thickness and final finish the same. Yes, I would agree there are instances where a bare copper product would be provided, but as stated earlier these would be exceptions (I assume). I believe we need to separate Code C in Table 3-2 and state this is not final finish criteria unless specified by the customer. Franklin -----Original Message----- From: IPC-600-6012 [mailto:[log in to unmask]] On Behalf Of Thomas F Gardeski Sent: Monday, February 04, 2008 3:53 PM To: [log in to unmask] Subject: Re: [IPC-600-6012] Bare Copper as a Surface Finish Bare cooper is only supplied as an intermediate for further processing down the line. I don't think we have to cover it in 6012B. Thomas F. Gardeski Global Technical Service Manager DuPont High Performance Films 480 831 0975 AZ / 740 474 0269 OH [log in to unmask] John Perry <[log in to unmask] G> To Sent by: [log in to unmask] IPC-600-6012 cc <IPC-600-6012@ipc .org> Subject [IPC-600-6012] Bare Copper as a Surface Finish 02/04/2008 01:52 PM Please respond to "(Combined Forum of D-33a and 7-31a Subcommittees)" <IPC-600-6012@IPC .ORG> Colleagues, Our IPC-6012B specification provides for bare copper as a final finish in Table 3-2, Final Finish, Surface Plating and Coating Thickness Requirements. The task group is evaluating whether or not this should be removed from Table 3-2 in the future IPC-6012 Revision C. Among the concerns with bare copper are instances of single-sided via protection that provides for entrapment of chemistries that attack the bare copper in the hole wall. If there are those of you out there who use bare copper as a surface finish, could you provide feedback to IPC as to how it is used in your applications? Thanks in advance, John Perry Technical Project Manager IPC 3000 Lakeside Drive # 309S Bannockburn, IL 60015 [log in to unmask] 1-847-597-2818 (P) 1-847-615-7105 (F) 1-847-615-7100 (Main) This communication is for use by the intended recipient and contains information that may be Privileged, confidential or copyrighted under applicable law. If you are not the intended recipient, you are hereby formally notified that any use, copying or distribution of this e-mail, in whole or in part, is strictly prohibited. Please notify the sender by return e-mail and delete this e-mail from your system. Unless explicitly and conspicuously designated as "E-Contract Intended", this e-mail does not constitute a contract offer, a contract amendment, or an acceptance of a contract offer. This e-mail does not constitute a consent to the use of sender's contact information for direct marketing purposes or for transfers of data to third parties. Francais Deutsch Italiano Espanol Portugues Japanese Chinese Korean http://www.DuPont.com/corp/email_disclaimer.html