首次通过率（FPY）

First Pass Yield (FPY) is a critical metric in 制造业 和 产品设计 that measures the percentage of products that are produced correctly without any rework or defects during the initial production process. It serves as an indicator of process efficiency and quality, reflecting the effectiveness of design and production methodologies. High FPY values are essential for minimizing costs, reducing waste, and ensuring customer satisfaction by delivering reliable products.