Specific energy consumption of dynamic random access memory module supply chain in Taiwan

This study focuses on specific energy consumption (SEC) of all major energy consuming segments of the Dynamic Random Access Memory (DRAM) module supply chain, including 12” Si-wafer (ingot), wafer fabrication, integrated circuit (IC) assembly, IC testing, module assembly, and printed circuit board (...

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Bibliographic Details
Published in:Energy (Oxford) 2012-05, Vol.41 (1), p.508-513
Main Authors: Chang, Cheng-Kuang, Hu, Shih-Cheng, Liu, Vincent, Chan, David Yi-Liang, Huang, Chin-Yi, Weng, Ling-Chia
Format: Article
Language:English
Subjects:
Applied sciences
Assembly
Capacity utilization
carbon dioxide
Circuit boards
DRAM
Dynamic random access memory
electricity
electronic circuits
Energy
energy conservation
Energy consumption
Energy efficiency
Exact sciences and technology
greenhouse gas emissions
Integrated circuits
Modules
polychlorinated biphenyls
Printed circuits
specific energy
Supply chain
Supply chains
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Summary:This study focuses on specific energy consumption (SEC) of all major energy consuming segments of the Dynamic Random Access Memory (DRAM) module supply chain, including 12” Si-wafer (ingot), wafer fabrication, integrated circuit (IC) assembly, IC testing, module assembly, and printed circuit board (PCB). Results show that energy consumption of a single unit of the end product from the DRAM supply chain is 4.67 kWh/PIC (PIC = a piece of DRAM module). For its annual shipments of 85,136,366 PIC/yr, the whole DRAM supply chain consumes a total of 397,331,726 kWh of energy, emitting 252,703 tons of CO2. The outcomes of this study provide baseline SEC of the DRAM supply chain that can be used while designing fabrication plants (hereafter referred to as “fabs”) in the future. We estimate that if all fabs in Taiwan achieve the same level of SEC as the best performer (i.e. lowest SEC level), annual energy savings and emissions reduction in Taiwan could be expected to reach 228,561,645 kWh of electricity and 149,426 tons of CO2 emissions, respectively. ► Specific energy consumption (SEC) of energy consuming segments of the DRAM supply chain in Taiwan is studied. ► Energy consumption of a single unit of the end product from the DRAM supply chain is 4.67 kWh/piece. ► The whole DRAM supply chain consumes a total of 397,331,726 kWh of energy, emitting 252,703 tons of CO2.
ISSN:0360-5442
DOI:10.1016/j.energy.2012.02.036