SEMICONDUCTOR BOM WAFER & SUBSTRATE QUALITY CHECKLIST 2026

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--- WAFER MATERIAL SPECIFICATION VERIFICATION ---
[ ] Wafer Material Type
[ ] Target Wafer Diameter (mm)
[ ] Crystal Orientation (<100>, <110>, <111>)
[ ] Impurity Concentration Limit (ppm)
[ ] Material Certificate of Analysis (CoA)
[ ] Required Thickness Tolerances (Standard Tolerance, Ultra-Thin Specification, High-Precision Spec)
[ ] Verification Engineer Approval

--- SUBSTRATE SURFACE INTEGRITY INSPECTION ---
[ ] Surface Roughness (Ra) Status (Within Specification, Out of Specification, Requires Re-inspection)
[ ] Measured Surface Roughness (Ra) Value
[ ] Detected Surface Defects (Scratches, Pitting, Particulate Contamination, Micro-cracks, None Detected)
[ ] Defect Detail & Observation Notes
[ ] Microscopic Imaging/SEM Report
[ ] Quality Inspector Authentication

--- CHEMICAL & DOPANT COMPOSITION AUDIT ---
[ ] Dopant Concentration Level
[ ] Purity Percentage
[ ] Chemical Grade Classification (Electronic Grade (Ultra-High), Industrial Grade, Reagent Grade)
[ ] Chemical Batch Expiry Date
[ ] Certificate of Analysis (CoA)
[ ] Detected Impurities (Carbon, Oxygen, Metallic Trace Elements, None/Within Tolerance)
[ ] Quality Assurance Approval

--- LAYER THICKNESS & DEPOSITION ACCURACY ---
[ ] Dielectric Layer Thickness (nm)
[ ] Metallization Layer Thickness (nm)
[ ] Deposition Method (Chemical Vapor Deposition (CVD), Physical Vapor Deposition (PVD), Atomic Layer Deposition (ALD), Sputtering)
[ ] Deposition Variance Notes
[ ] Thickness Metrology Report
[ ] Quality Engineer Approval

--- PART NUMBER & BATCH TRACEABILITY ---
[ ] Primary Part Number
[ ] Batch/Lot ID Number
[ ] Manufacturing Date
[ ] Expiration/Shelf-life Date
[ ] Substrate Material Type (Silicon (Si), Silicon Carbide (SiC), Gallium Nitride (GaN), Germanium (Ge))
[ ] Certificate of Analysis (CoA) Upload
[ ] Quality Assurance Inspector Sign-off

--- CONTAMINATION CONTROL & CLEANROOM COMPLIANCE ---
[ ] Cleanroom ISO Class Verification (ISO Class 1, ISO Class 3, ISO Class 5, ISO Class 7)
[ ] Daily Contamination Control Checkpoints Completed (Air Particle Counter Calibration, Surface Decontamination Protocol, Gown/PPE Integrity Check, Equipment Sterilization Log)
[ ] Particle Count Per Cubic Meter
[ ] Cleanroom Environmental Monitoring Report
[ ] Last Sterilization/Decontamination Date
[ ] Quality Assurance Inspector Signature

--- SUPPLIER QUALITY & COMPLIANCE DOCUMENTATION ---
[ ] Certificate of Analysis (CoA) Expiry Date
[ ] Supplier Compliance Certificate
[ ] Regulatory Compliance Status (Fully Compliant, Pending Verification, Non-Compliant / Action Required)
[ ] Verified Compliance Standards (RoHS Compliant, REACH Compliant, ISO 9001 Certified, Conflict Minerals Free)
[ ] Supplier Audit Reference Number
[ ] Quality Assurance Approval

--- POST-PROCESSING & PACKAGING READINESS ---
[ ] Substrate Compatibility Status (Compatible with Assembly Line, Requires Modification, Incompatible / Hold)
[ ] Target Dicing Margin (microns)
[ ] Required Post-Processing Steps (Wafer Thinning, Backgrinding, Lapping, Singulation/Dicing, Polymer Coating)
[ ] Scheduled Packaging Start Date
[ ] Post-Processing Specification Sheet
[ ] Quality Assurance Inspector Sign-off

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