日本語 
OKI will begin offering a ” Complete EMS ” service for AI server equipment equipped with high-performance semiconductors with over 10,000 terminals (connection points) starting March 25, 2026, utilizing its unique high-heat-dissipation PCB technology. The service will offer two types of EMS: “Complete Common Process EMS,” which handles common production processes such as parts procurement and inventory management, board mounting, equipment assembly, and testing, and “Complete Product Group EMS,” which provides integrated support for all processes, including rework. OKI aims for sales of 1 billion yen in fiscal year 2026.
In the production lines for AI server equipment, challenges include high component mounting precision, management of warping and interference due to differences in thermal expansion between PCBs and components during high-temperature heating, countermeasures against the high heat generated when a large number of AI semiconductors are in operation, detection of solder defects inside contacts that cannot be detected by AOI (Note 2), and an increase in the number of inspection items. Furthermore, the increased difficulty of traceability and rework after mounting large and expensive AI semiconductors leads to challenges such as decreased production yield and increased failure costs and production time due to the disposal of defective products.
The new service will provide simulation and manufacturing technologies for high-multilayer PCBs incorporating high-density mounting technology for large, high-multilayer PCBs of AI semiconductors, and our unique ” copper coin embedded PCB technology ” that achieves high heat dissipation, all cultivated through the manufacturing of information and communication infrastructure equipment and semiconductor inspection equipment that require high-speed, high-capacity data transmission. In addition, our high-speed solder inspection technology using X-rays, automated functional inspection technology, and multi-product, small-batch production technology and skills for high-quality, high-reliability products will enable high yield and reduced production time for AI server equipment production.
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With “Comprehensive EMS for the Entire Product Range,” even if a semiconductor defect is discovered after board mounting, and the component is expensive, has a long lead time, is a micro-component, or is densely mounted, making rework difficult on a normal production line, OKI ‘s “EMS Masters ” with advanced soldering skills utilize a rework and reballing (Note 3) line with uniquely developed equipment and jigs to handle rework even high-performance semiconductors with over 10,000 terminals in a short lead time. Customers can expect to reduce subcontracting management man-hours with “Comprehensive EMS,” improve yield, reduce failure costs, shorten lead times, and further enhance business efficiency.
Since 2025, OKI has been accelerating companies’ asset-light management in manufacturing and has launched its “Comprehensive EMS” service to support the improvement of management indicators. Through this service, OKI has provided many customers with the design and production technologies and skills necessary to quickly launch new, variable-volume, high-quality, and highly reliable production systems. Moving forward, OKI will continue to develop new service menus for “Comprehensive EMS,” aiming to contribute to solving further management challenges as a sustainable “virtual factory” that provides transparency and immediacy, making customers feel as if they are using their own factory.
SOURCE: PRTimes
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