ppm targets

**PPM Targets** are **the maximum allowable defective parts per million specified for semiconductor products** — quality targets that define the acceptable outgoing defect rate, determined by the end application's reliability requirements and customer expectations. **PPM Target Levels** - **Automotive (AEC-Q100)**: <1 PPM — the most demanding target, reflecting safety-critical applications. - **Medical**: <5 PPM — patient safety drives stringent quality requirements. - **Industrial/Telecom**: <10-20 PPM — high reliability for infrastructure equipment. - **Consumer Electronics**: <50-100 PPM — lower criticality allows slightly relaxed targets. **Why It Matters** - **Test Strategy**: PPM targets determine the required test coverage, burn-in strategy, and screening levels. - **Economics**: Achieving <1 PPM requires significantly more testing than <100 PPM — major cost impact. - **Contractual**: PPM targets are contractually specified — failure to meet them triggers penalties or business loss. **PPM Targets** are **the quality bar** — application-specific defect rate limits that drive testing strategy, screening intensity, and manufacturing quality requirements.