Today’s wafer manufacturers are seeking efficient strategies to enhance Overall Equipment Effectiveness (OEE) and yield.  Around the globe our customers are fabricating millions of wafers in various materials such as Silicon, GaAs, SiC, GaN, InP, GaSb, LNBO3, LiTaO3, SOI, and epitaxial wafers. Stringent fabrication processes not only require automated wafer sort and wafer storage but also wafer quality throughout the process from ingot pulling to final wafer cleaning and packing for shipment to the wafer fabs. NADAtech provides customers with the capability to automatically sort, store, and inspect wafers during the fabrication process in order to detect problems such as particles, chips, dimples, slip, bow/warp, and thickness and then binning these yield issues in the proper locations for corrective actions or reclaim. Our systems proactively identify process excursions in situ to aid engineers in making sound decisions at critical points during the entire process.

The decision to utilize a wafer sorter or wafer stocker is tailored to specific customer requirements for each process step, but the underlying principle remains a quality-based wafer sorting process. When preparing wafers for larger binning applications, a wafer stocker is preferred due to their typical capacity range between 200 and 800 wafers.

Customers rely on NADAtech to provide high volume manufacturing yield enhancement techniques throughout the entire process. For comprehensive assistance in determining the optimal wafer sorter, stocker, and and inline metrology and inspection strategies for your organization, please contact us. Our knowledgeable staff will provide expert guidance tailored to your needs.