Fellow Techies: My company is currently initiating an SPC program to help control our SMT processes. I would like to benchmark what statistical process control methods and systems the industry is currently using. We are a high mix low volume facility that use an MPM 2700 printer (with vision system), Fuji CP and IP placers, and Vitronics ovens. However, we are currently stopping the line and making adjustments according to inspection and audit results. We are interested on focusing on process inputs. Can anyone please share what lessons learned, and what process controls they currently have in place for this type of processes/equipment. SPC charts? X-chart, C-chart,P-chart, U-chart? How data is collected and used? What software/hardware is being used? Currently, we are calculating DPMO's to monitor line and product performance, but we are finding out that the DPMO target values (<75) are too small of a number to stop lines and adjust processes. Plus, this is a reactive step, not a preventive step. Any comments/suggestions. Any information is appreciated. Thanks for your help. -Teo Tijerina Conexant Systems, Inc. 915.780.5552 [log in to unmask] ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################