Procurement Validation
Quality assurance protocols confirm that micro-electromechanical systems meet the design specifications and material purity requirements defined in the procurement contract. Detailed mems sourcing verification involves auditing the entire supply chain from the raw silicon wafer to the final packaged sensor. This oversight prevents the integration of counterfeit or substandard components into critical systems.
It includes checking the calibration records of the foundry and the cleanroom certification of the assembly house.
Vendor Audit
Site inspections of the manufacturer provide evidence of process control and consistency. During mems sourcing verification, an inspector reviews the statistical process control charts for etch depth and layer thickness. These metrics determine the yield and reliability of the final product.
Lot Testing
Physical evaluation of a sample from each production batch is required before acceptance. The mems sourcing verification team subjects the samples to thermal cycling and vibration to ensure they match the datasheet. Any failure in this stage results in the rejection of the entire lot.
Reliability Data
Long term performance predictions are based on accelerated aging tests provided by the supplier. High temperature operating life data is a mandatory part of mems sourcing verification for industrial customers. This documentation stays with the component throughout its service life.
