Forum Discussion
Rolled Throughput Yield (Not First Time Yield)
Anonymous , not able to find/understand Yield and process.
The information you have provided is not making the problem clear to me. Can you please explain with an example.
Appreciate your Kudos.
Hi amitchandak
I am trying to show how many items are output from each operation in the routing.
Then, using this information we can calculate the First Time Yield which is the % of units that were output.
On operation 1, if we expected to output 10 items and only 9 were successful, this is a first time yield of 90% for operation 1.
On operation 2 we have 9 available to start, but only 8 were completed. On operation 2 the first time yield is therefore 88.9%.
The rolled throughput yield is calculated at each stage of the manufacturing process, on each operation. It is a product of the first time yield of each operation up to that point.
In the above example, rolled throughput yield is as follows:
Operation 1 = 90%
Operation 2 = 90% x 88.9% = 80.0%