Optimal load allocation method for keeping target TAT - application of Nonlinear Programming -

For high-mix and small product Fab that includes hot-lot and normal lot, the target TAT( Turn Around Time) of hot-lot is shorter than normal product. Each process is available to limited tools because the tool is used for production and development. This paper proposes a new optimal load allocation method, for keeping TAT and throughput of Fab, and shows results of verification for effectiveness of this method by using simulation.