The Process of Qualifying a New Product or New Process for Wafer Fabrication


May 28, 2020

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Semiconductor fabrication, especially with GaAs wafer manufacturing, require processes that need a high level of control. That's why, whenever there are changes in these processes or the introduction of a new method, it must first go through proper qualification before it can be implemented. Following this strict guideline will help make sure that the changes do not affect the process flow and will still produce wafers that meet the required specifications. In this article, we will discuss the process of qualifying a new product or process in the wafer industry.

How a New Product is Integrated into the Wafer Fabrication Process

Each process change will have different effects on the GaAs wafer fabrication process, so there’s no specific standard procedure for qualifying changes. The qualification procedure must be custom-made for every change and guarantee that there is no depletion in the quality and reliability of the final wafers.Generally, semiconductor companies follow a basic course when creating a qualification procedure for a process change or a new process. It includes the following:

  • Identify possible failure modes and mechanisms that the process change may cause.
  • Do a sampling on the appropriate reliability stresses to hasten the possible failure mechanisms.
  • Test the samples to identify if they are still satisfactory after completing the reliability stresses.

This basic course works on the basis that the process change may be qualified for implementation if the final results will not show any decline or failure associated with the change.The secret to an excellent qualification procedure is the accurate prediction of what possible failure mechanisms the process change will trigger. Once you’ve identified the possible failure mechanisms, the reliability tests will follow.

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Looking for a GaAs Wafer?

Qualifying a new product or process is necessary to guarantee that the quality of the GaAs wafer produced is not compromised in any way. At Wafer World, we offer high-quality wafers at a reasonable price. Contact us for inquiries!

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