ANALYSIS OF THE SHORT TERM IMPACT OF CHANGES IN PRODUCT MIX

摘要

In this paper we use a simulation model of an existing semiconductor fab to study the effects of changes in product mix on fab performance. We observe how short-term increases in wafer starts of a product influence the cycle time and WIP of this product and of the other products. It is examined how the fab recovers from production surges under different dispatch rules and how fab performance is affected if the product mix is changed on a weekly basis. The methodology used to study the transient behavior of a wafer fab using simulation is discussed.