Electronics Manufacturing worked example

Reflow Oven Throughput at 99% reflow line efficiency: a worked example

This scenario runs the reflow oven throughput calculation on the strong side: 99% reflow line efficiency, with every other input held at its documented default. a process engineer needs to verify whether the reflow oven can keep up with SMT placement output

The inputs for this scenario

  • Boards through reflow: 2,600 boards (unchanged)
  • Reflow oven runtime: 10 hr (unchanged)
  • Reflow line efficiency: 99 % (raised for this scenario; the documented default is 92)

Working through the calculation

  • Applying the documented formula (Observed reflow board rate = boards through reflow รท reflow oven runtime) to the inputs above produces each figure below.
  • At this operating point the engine returns 257 boards / hr for effective reflow throughput, the number this scenario is built around.
  • At this operating point the engine returns 260 boards / hr for observed reflow board rate.
  • At this operating point the engine returns 99 % for reflow line efficiency.
  • At this operating point the engine returns 10 hr for reflow oven runtime.

How this compares with the baseline

  • Against the tool's baseline example, where reflow line efficiency sits at 92% and the headline result is 239 boards / hr, this scenario comes in 7.61% above the baseline at 257 boards / hr.
  • Use it when capacity planning the SMT line, identifying the bottleneck stage, or validating a quoted lead time against real oven output. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Effective reflow throughput: 257 boards / hr (headline result)
  • Observed reflow board rate: 260 boards / hr
  • Reflow line efficiency: 99 %
  • Reflow oven runtime: 10 hr

Run it with your numbers

  • Every input above is editable in the live Reflow Oven Throughput calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.