Title :
Impact of tool installation delay on factory ramp-up performance
Author :
Hoxie, L.C. ; Solomon, Lance ; Thomison, Jerry ; Abt, Norm ; Pittman, Sarah
Author_Institution :
Motorola Inc., Austin, TX, USA
Abstract :
This study examines the effect of delays in tool installation and qualification on plant performance, specified as discounted cumulative cash flow (DCCF) as the plant is ramped from zero to 20,000 wafer starts/month. Two different ramp strategies are addressed-conservative (24 months) and aggressive (9 months). A specific ramp analysis methodology using a discrete event simulator and cost and yield models, applied to the given assumption set, showed: (1) tool qualification delays impacted investment cost by $34 million/month before the fab breaks even and (2) opting for a 62.5% shorter ramp period effected a 19% reduction in break even time
Keywords :
discrete event simulation; economics; factory automation; integrated circuit manufacture; integrated circuit yield; investment; aggressive strategy; break even time; conservative strategy; discounted cumulative cash flow; discrete event simulator; factory ramp-up performance; investment cost; plant revenue generation; ramp strategies; tool installation delay; yield models; Analytical models; Costs; Delay effects; Delay estimation; Discrete event simulation; Equations; Probes; Production facilities; Qualifications; Semiconductor device modeling;
Conference_Titel :
Semiconductor Manufacturing, 1995., IEEE/UCS/SEMI International Symposium on
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-2928-7
DOI :
10.1109/ISSM.1995.524370
