placement speed

**Placement speed** is the **component placement throughput rate of a pick-and-place system, often expressed as components per hour** - it drives line capacity but must be balanced against placement quality. **What Is Placement speed?** - **Definition**: CPH measures how many placements a machine can complete under defined conditions. - **Real vs Nominal**: Actual throughput is lower than catalog speed due to feeder, vision, and travel constraints. - **Product Mix Impact**: Component size diversity and board layout complexity change effective speed. - **Line Context**: Throughput must be matched to SPI, reflow, and inspection bottlenecks. **Why Placement speed Matters** - **Capacity Planning**: Placement speed sets attainable UPH and factory output targets. - **Cost**: Higher stable throughput lowers fixed assembly cost per board. - **Scheduling**: Accurate speed modeling improves production planning and due-date reliability. - **Quality Tradeoff**: Excessive speed can reduce placement accuracy and raise defect rates. - **Investment Decisions**: Speed capability influences machine selection and line architecture. **How It Is Used in Practice** - **Balanced Optimization**: Tune acceleration and vision settings for best speed-quality combination. - **Line Simulation**: Use digital line models to identify true bottleneck rather than isolated machine CPH. - **KPI Segmentation**: Track throughput by product family to avoid misleading aggregate averages. Placement speed is **a core operational metric for SMT manufacturing performance** - placement speed should be optimized as part of total line efficiency, not as a standalone machine target.