Quality and Reliability Assurance

Our company conducts evaluations and examinations of semiconductor devices according to our quality assurance program at every stage from market research and planning to design prototype development and mass production.

Creating quality starts from the planning stage for semiconductor devices. We conduct market research to ascertain and analyze customer requirements, incorporate these into product planning and then apply that to quality.

Continuing from the product-planning stage, we incorporate consistent quality in all stages of design, prototype development and mass production.

When Design change and / or Process Change are proposed internally, a primary review meeting organized by the QA department and other relevant departments is held to study the changes.
In order to confirm that there are no differences in quality and reliability to our existing products, evaluation and qualification tests are performed if needed. The manager of QA department finally approves the changes before the application.
We notify our customers of changes in advance when we judge the changes could affects the products and / or process of customers from the viewpoint of quality, reliability, electrical characteristics, device dimensions, external appearance, and ease-of-use.

Fujitsu Semiconductor Memory Solution controls manufacturing logs of all devices from the wafer process to assembling, testing, and shipping so that we can trace the manufacturing history when any problem occurs in the market or manufacturing process of a customer.
Manufacturing history of each device can be identified by the marking on each device package.

Fujitsu Semiconductor Memory Solution, a design and development company of electronics devices has a strong relationship with suppliers such as wafer manufacturers and package assembly makers. We collaborate to improve our products in terms of quality, engineering, price, stable supply and CSR* in order to satisfy our customers.

* CSR：Corporate Social Responsibility

For manufacturing of high-quality products, the suppliers to which we outsource wafer manufacturing, and packaging for our products are very important. Therefore, we carefully decide and certify the suppliers.
First stage is the selection stage. At this stage, we decide candidates for supplier through three steps, candidate selection, a capital investigation, and a technical investigation.
After selecting the candidate, we shift to the second stage, certification stage. At this stage, we can begin to certify the candidate through four-steps, a prototype technology evaluation, a reliability evaluation, conclusion of purchasing specification (including an agreement on Quality Assurance), and finally an audit, for certification.
If the candidate is approved by the audit, we certify the company as a supplier.

Fujitsu Semiconductor Memory Solution outsources manufacturing of our products to certified suppliers. In controlling mass production at this stage, we conduct continuous monitoring, measurements, and analysis of the supplier through monthly reports, quality meetings, complaint support and abnormal control activities. Furthermore, we evaluate and rate our suppliers quality based on the results of their performance. And also we conduct periodic audits, special audits, and give them feedback.

Fujitsu Semiconductor Memory Solution has continued to supply detailed support for product quality to ensure a stable supply of high-quality products.

An example is failure analysis. If any failure by our products occurs at the customer side after shipping, we investigate the failed device to find the root cause. Then we implement countermeasures against the cause, and take corrective action to prevent the same failure recurring. The failure analysis report to the customer includes the above status, the cause of failure, countermeasure, and corrective action etc. We provide feedback internally to improve quality and reliability of products. In addition, Fujitsu Semiconductor Memory Solution responds to customer requests such as providing of quality and reliability data, and cooperating with factory audits.

Fujitsu Semiconductor Memory Solution carefully analyzes all products returned from customers as failures. After an initial check on external appearance and electrical characteristics, we investigate the cause of the failure. When we specify the root cause, we implement countermeasures against the cause, and take corrective action to prevent the same failure from recurring.

Fujitsu Semiconductor Memory Solution provides feedback on the failure analysis information to not only our internal engineering Dept. but also suppliers to improve the quality and reliability of the final product.