Lean Definition

First Pass Yield

First Pass Yield is the percent of finished products or sub-assembly/component units that meet all quality related specifications at a critical test point in the process. This is a measure of the yield that results from the first time through the process, prior to any rework. It should reflect all defective units detected since the preceding yield test point. IN process industries, yield should be calculated as the percent of output that meets target-grade specifications ( excluding saleable “off Grade” product).