%0 Conference Paper %1 lotsize05 %A Low, Malcolm Yoke Hean %A Liow, Mike Long Foong %A Lendermann, Peter %A Potoradi, Jurgen %A Tng, Long Kim %A Lim, Wai Khang %A Quadt, Daniel %B 2005 International Conference on Modeling and Analysis of Semiconductor Manufacturing (MASM) %D 2005 %K Bucket Lot Planning Semiconductor Sizing %P 201-208 %T Analysis of Lot Sizing and Planning Bucket Strategies for Semiconductor Backend Operation %U http://web.mysites.ntu.edu.sg/yhlow/public/Shared%20Documents/papers/masm2005.pdf %X Capacity planning in existing semiconductor assembly and test operation is usually done in weekly buckets, and incoming customer orders are checked “capable-to-promise” against these weekly buckets. Consequently, delivery of a customer order on a specific date can be ensured only if they are planned for in the previous planning week. The overall leadtime from customer order processing to final delivery can amount to more than six weeks. Significant leadtime reduction can be made through moving from weekly to daily planning buckets. At the same time, in the hyper-complex, make-to-order environment of the assembly and test manufacturing process, where order quantities are not necessarily a multiple of the optimal lot sizes due to customer order constraints, the issue of lot sizing has become even more critical than before. In this paper, we investigate the issue of lot sizing and the impact of planning bucket on the order fulfillment rate of the backend operation. A simulation model based on actual factory data is constructed and experiments were carried out to determine the best lot size to use for the factory as well as to evaluate the impact of switching from a weekly to a daily planning bucket.

@inproceedings{lotsize05, abstract = {Capacity planning in existing semiconductor assembly and test operation is usually done in weekly buckets, and incoming customer orders are checked “capable-to-promise” against these weekly buckets. Consequently, delivery of a customer order on a specific date can be ensured only if they are planned for in the previous planning week. The overall leadtime from customer order processing to final delivery can amount to more than six weeks. Significant leadtime reduction can be made through moving from weekly to daily planning buckets. At the same time, in the hyper-complex, make-to-order environment of the assembly and test manufacturing process, where order quantities are not necessarily a multiple of the optimal lot sizes due to customer order constraints, the issue of lot sizing has become even more critical than before. In this paper, we investigate the issue of lot sizing and the impact of planning bucket on the order fulfillment rate of the backend operation. A simulation model based on actual factory data is constructed and experiments were carried out to determine the best lot size to use for the factory as well as to evaluate the impact of switching from a weekly to a daily planning bucket.}, added-at = {2009-07-02T07:39:11.000+0200}, author = {Low, Malcolm Yoke Hean and Liow, Mike Long Foong and Lendermann, Peter and Potoradi, Jurgen and Tng, Long Kim and Lim, Wai Khang and Quadt, Daniel}, biburl = {https://www.bibsonomy.org/bibtex/23db1a63c97841e1c8d8815c0b5ae53fc/myhlow}, booktitle = {2005 International Conference on Modeling and Analysis of Semiconductor Manufacturing (MASM)}, interhash = {1f56c59e5283f12c036e13f479a0cf7c}, intrahash = {3db1a63c97841e1c8d8815c0b5ae53fc}, keywords = {Bucket Lot Planning Semiconductor Sizing}, month = {October}, pages = {201-208}, timestamp = {2009-07-02T07:39:11.000+0200}, title = {Analysis of Lot Sizing and Planning Bucket Strategies for Semiconductor Backend Operation}, url = {http://web.mysites.ntu.edu.sg/yhlow/public/Shared%20Documents/papers/masm2005.pdf}, year = 2005 }