A special feature of the production sites in the
automotive industry are the short lead times. In addition,
manufacturers are able to increase production capacity
even at short notice, for instance through extra shifts or
the fast ramp-up of additional production resources.
Therefore, the automotive industry can respond quickly
to demand fluctuations.
By contrast, the lead times in the semiconductor industry
amount to 10-16 weeks, because the manufacture of
chips (front end) is very complex and involves up to 800
process steps [19]. The manufacturing of dies in the
front end requires 10 to 12 weeks for microprocessors.
In addition, the facilities for chip manufacturing are
operated under 24/7 conditions with utilization rates of
90-95%. The long lead times in the semiconductor
industry require long-term planning horizons and stable
planning figures. In the semiconductor industry,
production orders are scheduled up to six months in
advance. Therefore, a change in planning quantities
directly affects production planning and may even make
processed production lots obsolete [1]
A special feature of the production sites in theautomotive industry are the short lead times. In addition,manufacturers are able to increase production capacityeven at short notice, for instance through extra shifts orthe fast ramp-up of additional production resources.Therefore, the automotive industry can respond quicklyto demand fluctuations.By contrast, the lead times in the semiconductor industryamount to 10-16 weeks, because the manufacture ofchips (front end) is very complex and involves up to 800process steps [19]. The manufacturing of dies in thefront end requires 10 to 12 weeks for microprocessors.In addition, the facilities for chip manufacturing areoperated under 24/7 conditions with utilization rates of90-95%. The long lead times in the semiconductorindustry require long-term planning horizons and stableplanning figures. In the semiconductor industry,production orders are scheduled up to six months inadvance. Therefore, a change in planning quantitiesdirectly affects production planning and may even makeprocessed production lots obsolete [1]
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