Engineering Hours Hidden inside a Unit Price Quotation
Unbundling hidden engineering hours from unit quotations exposes true manufacturing costs, restores IP ownership, and prevents locked-in margin erosion.
Yield Loss Factor
Meaning
Manufacturing performance metric expressing the ratio of defective or scrapped circuit board assemblies to total units processed through an assembly line. Tracking the yield loss factor enables factory managers to quantify component defects, soldering failures and assembly line processing errors. Process engineers analyze scrap data to identify root causes of manufacturing yield degradation.
Defect Accounting
Scrap tracking systems record defective unit counts at post-reflow inspection, automated optical inspection and functional testing stations. Calculating the yield loss factor provides baseline data for evaluating assembly process stability and component vendor quality levels. Quality engineers log specific defect codes to track recurring soldering or component placement errors.
Process Scrap
Solder bridging, component tombstoning and trace damage during assembly force boards to be scrapped or routed for manual rework. Elevated yield loss factor levels trigger immediate process audits across surface mount placement lines and solder reflow ovens. Factory floor supervisors stop lines when scrap rates exceed statistical process control thresholds.
Engineering teams analyze rejected board assemblies using X-ray inspection to detect hidden BGA solder voids.
Yield Target
Process optimization initiatives aim to minimize scrap rates to maximize gross operational margins on volume manufacturing runs. Lower scrap rates reduce component waste and shorten average production lead times. Continuous process improvement programs target zero-defect manufacturing standards across high-volume assembly operations.