Cycle time management during production ramp-up

摘要: Abstract Aggressive capacity ramp rate of a semiconductor wafer fabrication is vital for the commercial success enterprise. Basic requirements are short and stable production cycle times to timely qualify equipment provide acceptable yield. Therefore, in ramp-up environment which characterized by high variability uncertainty, an adequate methodology required properly manage conflict fast throughput increase. This paper presents time closely monitoring limiting work process (WIP), means so-called “WIP caps”. Used consequently, this allows accelerate as soon factory performance enables while keeping under control.