Appliance Electronics & Control Boards worked example

Control Board Burn-In Capacity Calculator at 99% burn-in chamber uptime: a worked example

What does the result look like when burn-in chamber uptime reaches 99%? The full calculation is worked below with real intermediate numbers. a reliability or production engineer needs to verify whether burn-in chambers can support appliance board volume

The inputs for this scenario

  • Boards loaded per burn-in batch: 96 boards/batch (unchanged)
  • Available burn-in batches: 18 batches/week (unchanged)
  • Burn-in chamber uptime: 99 % (raised for this scenario; the documented default is 92)
  • Burn-in pass yield: 98 % (unchanged)

Working through the calculation

  • Applying the documented formula (Gross burn-in board capacity = boards loaded per burn-in batch × available burn-in batches) to the inputs above produces each figure below.
  • At this operating point the engine returns 1,677 boards/week for usable burn-in board capacity, the number this scenario is built around.
  • At this operating point the engine returns 1,728 boards/week for gross burn-in board capacity.
  • At this operating point the engine returns 17.28 boards/week for boards lost to chamber downtime.
  • At this operating point the engine returns 34.21 boards/week for boards failed or held after burn-in.

How this compares with the baseline

  • Against the tool's baseline example, where burn-in chamber uptime sits at 92% and the headline result is 1,558 boards/week, this scenario comes in 7.61% above the baseline at 1,677 boards/week.
  • A figure at this level is achievable when burn-in chamber uptime is genuinely sustained, not just peaked for a shift. It assumes full batches every cycle; partial loads from mixed product or scheduling gaps reduce effective batch size and the calculator will overstate throughput.

Results at a glance

  • Usable burn-in board capacity: 1,677 boards/week (headline result)
  • Gross burn-in board capacity: 1,728 boards/week
  • Boards lost to chamber downtime: 17.28 boards/week
  • Boards failed or held after burn-in: 34.21 boards/week

Run it with your numbers

  • Every input above is editable in the live Control Board Burn-In Capacity Calculator calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.