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01 ·Fabrication & Packaging·★ MEMBER·11 min read Yield and Design — DFM, the Art of Giving Something Up A circuit can be correct in simulation and still fail to make money in volume. Defect density models and the clustering factor, design rules that restrict what shapes you may draw, redundancy that assumes breakage, and binning that turns one die into several products — the engineering of trading performance for yield, from first principles.