Educational role path

Metrology and yield engineering

Separate measurement-system variation, process variation, data grain, uncertainty, and yield proxies before drawing a conclusion.

Levels: 3
Checkpoints: 6
Artifact tasks: 12

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Competency level

Foundation

Name the variables, units, artifacts, and evidence classes required to read the role path.

1.1

Separate variation components

Separate repeatability, reproducibility, bias, resolution, process variation, and sampling effects.

Prerequisite: Start here
Evidence boundary: A teaching decomposition is not a qualified measurement-system study.

Public artifact tasks

lessonGauge R&R measurement systemsDefine each variation component.mapMetrology and yield domainLocate the measurement and yield evidence lane.

1.2

Classify grain and uncertainty

Classify metric grain, units, missingness, and uncertainty before comparing two results.

Prerequisite: Separate variation components
Evidence boundary: Matching labels without matching grain and conditions does not support comparison.

Public artifact tasks

referenceEvidence guideUse the public evidence and metric vocabulary.mapKnowledge AtlasConnect measurement concepts to related domains.

Competency level

Cross-domain practice

Trace and compare bounded public replays across at least one engineering handoff.

2.1

Compare Gauge R&R states

Compare two Gauge R&R replay states and explain which variation component changed the decision proxy.

Prerequisite: Classify grain and uncertainty
Evidence boundary: The replay cannot qualify a gauge or set a production acceptance limit.

Public artifact tasks

simulationGauge R&R replayCompare fixed measurement-system states.labGauge R&R labRecord the metric, threshold proxy, and limitation.

2.2

Trace measurement to yield

Trace one measured or proxy variable into a process-device-yield question while preserving sampling and evidence boundaries.

Prerequisite: Compare Gauge R&R states
Evidence boundary: The trace does not establish root cause, excursion attribution, or yield impact.

Public artifact tasks

lessonProcess-device-yield integrationIdentify the handoff variables and evidence classes.labProcess-device-yield labRecord missing measured-replacement evidence.

Competency level

Evidence-ready

Construct an inspectable evidence record with limitations, stop conditions, and replacement needs.

3.1

Construct a measurement evidence record

Construct a record containing metric definition, grain, unit, method, uncertainty, source, limitation, and replacement need.

Prerequisite: Trace measurement to yield
Evidence boundary: Structural completeness does not establish measurement validity or traceability.

Public artifact tasks

workspaceEvidence provenanceTrace the artifact, source, and release lineage.sourceSource policyCheck whether a source is accessible and citable.

3.2

Document a disposition stop

Document why the available public evidence cannot support wafer disposition, control-limit changes, or excursion closure.

Prerequisite: Construct a measurement evidence record
Evidence boundary: Disposition requires authorized production data, procedures, and accountable review outside SemiAgora.

Public artifact tasks

trustCorrectionsRecord a public claim or route correction.releaseRelease ledgerVerify the exact published evidence boundary.

Role boundary

Evidence first. Career promises stay out.

This path teaches measurement and evidence literacy; it does not support wafer disposition, control limits, excursion response, or yield commitment.

Role paths are educational navigation. They do not certify competence, promise employment, rank candidates, or represent employer acceptance.

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