Electronics Manufacturing worked example

SMT Placement Rate at 94% placement line efficiency: a worked example

What does the result look like when placement line efficiency reaches 94%? The full calculation is worked below with real intermediate numbers. an SMT process engineer needs to compare placement demand against real pick-and-place capacity before releasing a build

The inputs for this scenario

  • SMT panel cycles per hour: 42 panel cycles / hr (unchanged)
  • Component placements per panel cycle: 850 placements / panel (unchanged)
  • Placement line efficiency: 94 % (raised for this scenario; the documented default is 82)

Working through the calculation

  • Applying the documented formula (Gross placement rate = SMT panel cycles per hour × component placements per panel cycle) to the inputs above produces each figure below.
  • At this operating point the engine returns 33,558 placements / hr for effective smt placement rate, the number this scenario is built around.
  • At this operating point the engine returns 35,700 placements / hr for gross placement rate.
  • At this operating point the engine returns 2,142 placements / hr for placements lost to line inefficiency.
  • At this operating point the engine returns 94 % for placement line efficiency.

How this compares with the baseline

  • Against the tool's baseline example, where placement line efficiency sits at 82% and the headline result is 29,274 placements / hr, this scenario comes in 14.63% above the baseline at 33,558 placements / hr.
  • A figure at this level is achievable when placement line efficiency is genuinely sustained, not just peaked for a shift. Line efficiency here is a single blended factor — it cannot tell you whether your losses come from feeder changeovers, nozzle library mismatches, or vision rejects, so pair it with a downtime Pareto before you trust it for a capacity commitment.

Results at a glance

  • Effective SMT placement rate: 33,558 placements / hr (headline result)
  • Gross placement rate: 35,700 placements / hr
  • Placements lost to line inefficiency: 2,142 placements / hr
  • Placement line efficiency: 94 %

Run it with your numbers

  • Every input above is editable in the live SMT Placement Rate calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.