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

fYear

1995

fDate

17-19 Sep 1995

Firstpage

108

Lastpage

111

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Manufacturing, 1995., IEEE/UCS/SEMI International Symposium on

Conference_Location

Austin, TX

Print_ISBN

0-7803-2928-7

Type

conf

DOI

10.1109/ISSM.1995.524370

Filename

524370