semiconductor logistics

**Semiconductor logistics** is the **planning and control of material, wafer, and information flow across fab, assembly, test, and supply-chain nodes** - it ensures the right materials and lots are in the right place at the right time. **What Is Semiconductor logistics?** - **Definition**: End-to-end logistics discipline spanning inbound materials, intra-fab movement, inter-site transport, and outbound delivery. - **Flow Components**: Raw materials, WIP lots, reticles, spare parts, and finished devices. - **System Interfaces**: MES, ERP, warehouse systems, AMHS, and external freight networks. - **Performance Goals**: Minimize delay, preserve quality, and maintain traceable chain-of-custody. **Why Semiconductor logistics Matters** - **Cycle-Time Control**: Logistics delays directly increase wafer cycle time and delivery risk. - **Capacity Utilization**: Poor material flow can starve bottleneck tools and reduce output. - **Quality Protection**: Sensitive materials require controlled handling and timing to avoid degradation. - **Cost Efficiency**: Inventory imbalance and expedite shipping inflate operating cost. - **Resilience Planning**: Strong logistics design improves recovery from supply and transport disruptions. **How It Is Used in Practice** - **Flow Mapping**: Identify bottlenecks across storage, transport, and dispatch handoff points. - **Digital Integration**: Link lot tracking, scheduling, and transport systems for real-time visibility. - **Risk Controls**: Apply buffer policies and contingency routing for critical materials and tools. Semiconductor logistics is **a core operations capability for stable fab performance** - disciplined flow control improves throughput, lowers cost, and protects on-time customer delivery.