Rick, in previous salt mines, we only did one BOM for both. At Nielsen, after years of working with many CM's domestic and offshore, in all tiers, we've never been asked for a two level BOM. It's something the various CM's engineering staff determines. I suggest you structure in the manner preferred by your manufacturing floor, whether it's in house or outside. Bob Croslin The Nielsen Company -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Smith, Rick Sent: Tuesday, November 30, 2010 10:30 AM To: [log in to unmask] Subject: [TN] Separate BOM's for Same Assembly Hi Folks, Engineering currently produces two separate BOM's for a single board assembly, 1 for SMD's and the other for PTH parts which are subsequently entered into the ERP system by Doc Control. Without going into a lot of detail I understand the reasons for the separate BOM's are related to production logistics, routings and cost. I am told this is typical in the industry for OEM's and would like to either corroborate or debunk this with your responses. I am trying to determine if the 2 BOM system is necessitated by ERP limitations or the result of a misguided approach to process development. Does anyone use the two BOM approach for a single board assembly? Thanks! Regards, Rick ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- 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 ----------------------------------------------------- ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- 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 -----------------------------------------------------