But they are not "Buried Vias" as separated out by the comma prior to through holes. This symbology would be correct when placed after the comma and prior to the "through holes". Tom Kemp John Perry <[log in to unmask]> Sent by: IPC-600-6012 <[log in to unmask]> 05/25/2010 02:30 PM Please respond to "(Combined Forum of D-33a and 7-31a Subcommittees)" <[log in to unmask]> To [log in to unmask] cc Subject Re: [IPC-600-6012] New rev C Hi Everyone, The "greater than or equal" symbol in the title to Table 3-3 of IPC-6012C is there by intent. It is there to address the plain vanilla 2-sided printed boards. When we split out the plating thickness tables (used to all be Table 3-2) we picked up greater than 2 layers and all the sub type constructions, but forgot to include plain double-sided boards. John Perry Technical Project Manager IPC - Association Connecting Electronics Industries(r) 3000 Lakeside Drive # 309S Bannockburn, IL 60015-1249 USA +1 847-597-2818 (tel) +1 847-615-7105 (fax) +1 847-615-7100 (Main) [log in to unmask] www.ipc.org -----Original Message----- From: IPC-600-6012 [mailto:[log in to unmask]] On Behalf Of Jose A Rios Sent: Tuesday, May 25, 2010 2:17 PM To: Listserv IPC-600-6012 Subject: Re: [IPC-600-6012] New rev C it sure looks that way.... Joey Rios PWB & Process Quality Eng'r Endicott Interconnect Technologies 1093 Clark St. Endicott, NY 13760 Office: 607-755-5896 Wendi Boger <[log in to unmask]> Sent by: IPC-600-6012 <[log in to unmask]> 05/25/2010 02:35 PM Please respond to "(Combined Forum of D-33a and 7-31a Subcommittees)" <[log in to unmask]> To [log in to unmask] cc Subject [IPC-600-6012] New rev C Everyone, Is there a typo on Table 3-3 in 6012 Rev C? Shouldn't it say > 2 layers not >/= 2 layers. The 2 layers buried via would be covered under Table 3-5. Wendi This communication is for use by the intended recipient(s) only and may contain information that is privileged, confidential, proprietary and exempt from disclosure under applicable law. You are hereby notified that any dissemination, distribution, forwarding or copying hereof is strictly prohibited without the express written consent of DDi. If you have received this communication in error or are not the intended recipient, you should destroy the message and any attachments or copies, and you are prohibited from retaining, distributing, disclosing, or using any information contained herein. Please inform us of the erroneous delivery by return e-mail. Thank you for your cooperation. ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________