MedTech Manufacturing worked example
Medical Device Yield at 99% target yield rate: a worked example
Push target yield rate up to 99% and the picture changes. This example computes every intermediate figure at that operating point. Use this to track manufacturing quality performance, identify yield improvement opportunities, or report FPY KPIs to quality management review.
The inputs for this scenario
- Accepted units (first pass): 470 devices (unchanged)
- Total units started: 500 devices (unchanged)
- Target yield rate: 99 % (raised for this scenario; the documented default is 97)
Working through the calculation
- Applying the documented formula (Medical device yield rate = accepted units ÷ total units started × 100) to the inputs above produces each figure below.
- At this operating point the engine returns 94 % yield for first-pass yield (fpy), the number this scenario is built around.
- At this operating point the engine returns 5 points for yield gap to target.
- At this operating point the engine returns 470 count for accepted units.
- At this operating point the engine returns 500 count for total units started.
How this compares with the baseline
- Against the tool's baseline example, where target yield rate sits at 97% and the headline result is 94 % yield, this scenario lands almost exactly on the baseline at 94 % yield.
- It computes first-pass yield (accepted units divided by units started, times 100) and the point gap between that yield and your target. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.
Results at a glance
- First-pass yield (FPY): 94 % yield (headline result)
- Yield gap to target: 5 points
- Accepted units: 470 count
- Total units started: 500 count
Run it with your numbers
- Every input above is editable in the live Medical Device Yield calculator, which recalculates instantly and can be shared with the inputs intact.
Last reviewed 2026-05-12.