Diodes Incorporated to Acquire onsemi’s South Portland, Maine Wafer Fabrication Facility and Operations


March 1, 2022

Diodes Incorporated has recently announced it has entered into a definitive agreement to acquire onsemi’s wafer fabrication facility and operations located in South Portland, Maine. Terms of the agreement were not disclosed.

The South Portland Facility (SPFAB) offers Diodes additional 200mm wafer fab capacity for analog products to accelerate its growth initiatives in the automotive and industrial end markets. This US-based facility, together with Diodes’ existing wafer fabrication facilities in Asia and Europe, will further enhance Diodes’ global manufacturing operations.

“The proposed acquisition of the South Portland Facility aligns well with our strategic objective for significant revenue and profit dollar growth over the next several years,” said Dr. Keh-Shew Lu, chairman, president, and chief executive officer of Diodes. “The team’s exceptional engineering capabilities and skills will support our technical and operational performance expectations and are a welcomed addition to the Diodes’ family. Moreover, adding SPFAB to our manufacturing footprint will allow Diodes to support increasing customer demand through expanded capacity and internal manufacturing flexibility, further strengthening Diodes’ competitive advantage in this supply constrained environment. We are very enthusiastic about this acquisition and its value to Diodes’ future technology roadmap.”

The closing of the South Portland Facility transaction is subject to customary closing conditions and is expected to be completed in the second quarter of 2022. Following the close, Diodes will integrate the South Portland Facility as well as its operations and employees.




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