First time yield is a metric used to determine how a process is performing in relation to the number of good parts or services it produces. In other words FTY measures the percent of non-defective units that are successfully produced from a process the first time through. The metric is more specifically used to measure the ratio of parts made correctly the first time through. First time through yield can help gauge whether or not a cell is making parts correctly the first time through.
How is it Calculated?
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