You should develop your own follow up table. (beside the incoming inspection statistical method of accept / reject table). I recommend follow up table of common rejects families (mech. deviations, warpage, solderability, drills diameter, finish plating / coating, documents, solder mask, solder balls etc.) for each supplier per shipment and per major or minor failure. After a while you will see that each supplier has its typical failure that should be analyzed and to be corrected. Best Regards ROKAH Reuven e mail: [log in to unmask] bob wettermann <[log in to unmask] To: [log in to unmask] NET> cc: Sent by: TechNet Subject: [TN] Board Shop Outgoing QC Measurement <[log in to unmask] Suggestions > 23/10/03 03:10 AM Please respond to "TechNet E-Mail Forum."; Please respond to bob wettermann What is the the most common practice for measuring the outgoing QC levels of a PCB fabrication facility? Are ppm defect rates used? If so how are they practically measured-by the number of solder joints, the number of operations performed per board or...? --------------------------------------------------- Technet Mail List provided as a free 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 847-509-9700 ext.5315 ----------------------------------------------------- BWET Bob Wettermann PH 847-767-5745 --------------------------------------------------- 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 847-509-9700 ext.5315 -----------------------------------------------------