Scrap Decision

Scrap Decision is a formal disposition that removes a lot or wafer from production when recovery is not economically or technically justified - It is a core method in modern semiconductor operations execution workflows.

What Is Scrap Decision?

• Definition: a formal disposition that removes a lot or wafer from production when recovery is not economically or technically justified.
• Core Mechanism: Disposition boards evaluate risk, recovery feasibility, and business impact before terminating flow.
• Operational Scope: It is applied in semiconductor manufacturing operations to improve traceability, cycle-time control, equipment reliability, and production quality outcomes.
• Failure Modes: Delayed scrap calls can consume scarce tool time and hide systemic process failures.

Why Scrap Decision Matters

• Outcome Quality: Better methods improve decision reliability, efficiency, and measurable impact.
• Risk Management: Structured controls reduce instability, bias loops, and hidden failure modes.
• Operational Efficiency: Well-calibrated methods lower rework and accelerate learning cycles.
• Strategic Alignment: Clear metrics connect technical actions to business and sustainability goals.
• Scalable Deployment: Robust approaches transfer effectively across domains and operating conditions.

How It Is Used in Practice

• Method Selection: Choose approaches by risk profile, implementation complexity, and measurable impact.
• Calibration: Use clear disposition criteria tied to defect severity, cost, and downstream risk.
• Validation: Track objective metrics, compliance rates, and operational outcomes through recurring controlled reviews.

Scrap Decision is a high-impact method for resilient semiconductor operations execution - It protects line capacity by preventing unrecoverable material from consuming production resources.