Semiconductor Advanced Packaging & Test worked example

Underfill Usage with underfill dispense rate of 30 units / hr: a worked example

Push underfill dispense rate up to 30 units / hr and the picture changes. This example computes every intermediate figure at that operating point. Use it when underfill usage in semiconductor advanced packaging and test is being quoted and consumables are a real chunk of the cost stack.

The inputs for this scenario

  • Underfill dispense rate: 30 units / hr (raised for this scenario; the documented default is 12)
  • Dispenser runtime this run: 8 hr (unchanged)
  • Underfill material cost per unit: 3.5 $ / unit (unchanged)

Working through the calculation

  • Applying the documented formula (Underfill usage consumed = underfill usage use rate × underfill usage runtime) to the inputs above produces each figure below.
  • At this operating point the engine returns 240 units for underfill usage consumed, the number this scenario is built around.
  • At this operating point the engine returns 840 $ for underfill usage run cost.
  • At this operating point the engine returns 8 hr for underfill usage runtime.
  • At this operating point the engine returns 3.5 $ / unit for underfill usage unit cost.

How this compares with the baseline

  • Against the tool's baseline example, where underfill dispense rate sits at 12 units / hr and the headline result is 96 units, this scenario comes in 150% above the baseline at 240 units.
  • It computes total underfill consumed as dispense rate times runtime, and the run material cost as consumption times unit cost. 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

  • Underfill usage consumed: 240 units (headline result)
  • Underfill usage run cost: 840 $
  • Underfill usage runtime: 8 hr
  • Underfill usage unit cost: 3.5 $ / unit

Run it with your numbers

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

Last reviewed 2026-05-12.