Supplier analysis for wafer fabrication

摘要

High-purity gases critical to the semiconductor manufacturing environment are increasingly sought-after to meet ever-higher production yields and quality thresholds. The speciality gases involved are either ultra-high purity (UHP) single-component gases or accurately prepared gas mixtures. As the industry drives towards the production of smaller chip sizes, it leads to the requirement for UHP gases to achieve higher levels of purity, with the utmost reliability. For some foundries or fabs, this has made it necessary to install captive air separation units (ASUs) in a bid to produce and monitor costly materials in-house and reduce scrappage.