Power Electronics, Motors & Drives worked example

Power Electronics Scrap Cost at 92% share of unit cost recognized as scrap: a worked example

What does the result look like when share of unit cost recognized as scrap reaches 92%? The full calculation is worked below with real intermediate numbers. Use it when quantifying the cost of failed power stages, bad modules, damaged boards, rejected drives, or scrapped motor control assemblies.

The inputs for this scenario

  • Scrapped power electronics units: 100 units (unchanged)
  • Cost per scrapped unit: 45 $ / unit (unchanged)
  • Share of unit cost recognized as scrap: 92 % (raised for this scenario; the documented default is 80)
  • Fixed scrap containment and disposal cost: 250 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Variable power electronics scrap cost = scrapped units × cost per scrapped unit × scrap exposure captured) to the inputs above produces each figure below.
  • At this operating point the engine returns 4,390 $ for total power electronics scrap cost, the number this scenario is built around.
  • At this operating point the engine returns 43.9 $ / piece for scrap cost per affected unit.
  • At this operating point the engine returns 4,140 $ for variable power electronics scrap cost.
  • At this operating point the engine returns 250 $ for fixed scrap containment cost.

How this compares with the baseline

  • Against the tool's baseline example, where share of unit cost recognized as scrap sits at 80% and the headline result is 3,850 $, this scenario comes in 14.03% above the baseline at 4,390 $.
  • A figure at this level is achievable when share of unit cost recognized as scrap is genuinely sustained, not just peaked for a shift. The capture percent lets you recognize only part of the standard cost as loss; if you set it wrong you will over- or under-state the true write-off.

Results at a glance

  • Total power electronics scrap cost: 4,390 $ (headline result)
  • Scrap cost per affected unit: 43.9 $ / piece
  • Variable power electronics scrap cost: 4,140 $
  • Fixed scrap containment cost: 250 $

Run it with your numbers

  • Every input above is editable in the live Power Electronics Scrap Cost calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.