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MORE PROCESS CONTROL <br /> Lot control and This number is tied di- This"Step Wedge"may <br /> traceability are typically done rectly to a work order that has not look very important but it <br /> by.means of''date coding" every operation documented provides us with very critical <br /> which we feel is not exact and traceable to date of each statistical quality control and <br /> enough for the Eighties process,operator, quantity, process control data. <br /> technology and demands. chemical makeup of baths, These Wedge patterns <br /> We use an eight digit temperature of baths,cross are placed in strategic loca- <br /> number that is stamped on section report SQC and SPC tions on every film layer by <br /> every layer at material issue data. True and complete Quality Engineering and then <br /> and etched onto every board traceability. inspected at various stages of <br /> we make. the manufacturing process <br /> from imaging to final inspection. <br /> i <br /> Most matched imped- <br /> ance type boards require the <br /> manufacturer to hold a finished <br /> trace width within -t .0015"of <br /> a specific dimension. <br /> This Micromool fier allows <br /> us to modify the trace widths <br /> on your film to dimensions <br /> compatible with our pro - <br /> cesses and thereby achieve a <br /> finished product that will meet <br /> your design specifications. <br /> P <br />