Accelerometer
Attach sealed mechanical die and separate readout die to selected carrier, wirebond external pads, encapsulate only outside the sealed moving cavity, calibrate and verify mounted performance Discovery hypothesis; acceptance remains open.
Research draftClosure: OpenInventory incomplete
Capability requirements and tolerances
Consumer-specific numerical targets, quantities and acceptance limits remain open or incompletely reviewed. No smartphone-grade suitability is claimed. Distinct capability tiers require their own making route and qualification.
Making steps · draft selected for navigation; not a validated fabrication specification.
Known Parts and Tools
The selected route supplies this page's inventory and the map's dependency links from one record. Further requirements may be missing; review flags do not prove physical suitability.
| Requirement | Role | Use | Relationship status |
|---|---|---|---|
| Accelerometer mechanical die | Part | incorporated protected moving die with sealed cavity | Cycle-checked; compatibility unknown |
| Sensor readout die | Part | incorporated or consumed; allocation remains open | Cycle-checked; compatibility unknown |
| Sensor package carrier | Part | incorporated or consumed; allocation remains open | Cycle-checked; compatibility unknown |
| Chip packaging equipment | Tool | reused during construction/verification | Cycle-checked; compatibility unknown |
| Sensor calibration equipment | Tool | reused during construction/verification | Cycle-checked; compatibility unknown |
| Electrical instruments | Tool | reused during construction/verification | Cycle-checked; compatibility unknown |
| Chip bonding wire | Part | incorporated or consumed; allocation remains open | Cycle-checked; compatibility unknown |
| Die attach material | Part | incorporated or consumed; allocation remains open | Cycle-checked; compatibility unknown |
| Chip encapsulation compound | Part | consumed only outside already sealed MEMS cavity; thermal/stress compatibility unresolved | Cycle-checked; compatibility unknown |
| Cleanroom | Tool | reused during construction/verification | Cycle-checked; compatibility unknown |
| Electrostatic protection | Tool | reused during construction/verification | Cycle-checked; compatibility unknown |
| Jigs and fixtures | Tool | reused during construction/verification | Cycle-checked; compatibility unknown |
Unselected candidate inventories · 1
These records expose known requirements and alternative or blocked hypotheses. They add no manufacturing links or selected discovery depth.
Bond and package a accelerometer-mems-die with a separate readout ASIC and controlled cavity; calibration limits and phone compatibility remain unproven
Bond and package a accelerometer-mems-die with a separate readout ASIC and controlled cavity; calibration limits and phone compatibility remain unproven
- Accelerometer mechanical die · part
- Sensor readout die · part
- Sensor cap wafer · part
- Sensor package carrier · part
- Sensor wafer bonding equipment · tool
- Chip packaging equipment · tool
- Sensor calibration equipment · tool
- Electrical instruments · tool
- Chip bonding wire · part
- Die attach material · part
- Chip encapsulation compound · part
- Cleanroom · tool
- Electrostatic protection · tool
- Jigs and fixtures · tool
Complete inventory, selected process and compatible quantitative capability remain open. Wafer-level protection/capping versus release/dicing timing must be resolved before a recipe or physical output can be accepted.
Making outline
- Attach sealed mechanical die and separate readout die to selected carrier, wirebond external pads, encapsulate only outside the sealed moving cavity, calibrate and verify mounted performance
- Build or acquire each explicit earlier physical input; establish independent references and interfaces.
- Make trials and accept only against the eventual caller specification; record uncertainty and rejected outputs.
What remains unresolved
- Discovery hypothesis only: quantitative demands, full recipe, quantities, losses, compatibility and acceptance remain to be researched.
- Selected wirebond package hypothesis does not establish flagship I/O density, power delivery, size or thermal capability; flip-chip bump/underfill architecture is a separate OR alternative requiring its own complete inventory.
- Release, protective capping, feedthrough formation and singulation order is unresolved; exposing released movable structures during wet dicing may be incompatible. Capping may need to precede dicing. Cavity pressure must be selected for the actual damping/acoustic demand, not universally vacuum.
- Full inventory, required quantities, process settings, numerical demand and suitability remain open.
- Attached bounded research supports investigation only; the selected inventory, process, quantitative demands and compatibility are not fully source-checked or approved.
Sources and leads
Source scope and research notes determine which claims have been checked. A URL does not establish a complete making route.
- MEMS process technology
- AN4508: Parameters and calibration of a low-g 3-axis accelerometer
- Wafer level packaging of MEMS, Esashi, Transducers 2009
Earlier research provenance
- proposals/2026-10-08-discovery/electronics/report.md
- proposals/2026-10-08-discovery/electronics/frontier-report.md
Bounded research drafts
Read the source scope, known inventory and remaining limitations. These drafts do not approve the complete selected route.
- Read mems research (historical note unavailable)
Used by
Items that directly require this item in their selected inventory.
Paths from Smartphone
These routes together include every item that can lead from Smartphone to this item. Repeated path combinations are collapsed; recipes are omitted.
Shortest route: Smartphone → Sensor system → MEMS sensors → Motion sensor → Accelerometer
Enable JavaScript to see the routes covering every contributing item.