Company: AOSL
Filing Date: 2025-08-28
Form Type: 10-K
Source: 0001628280-25-041297
Chunk: 71

Company: ALPHA & OMEGA SEMICONDUCTOR Ltd
Filing Date: 2025-08-28
Form: 10-K
Item: Item 1
Chunk 71
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 our in-house packaging and testing facilities.  Our efforts to develop innovative packaging technologies continues to provide new and cost-effective solutions with higher power density to our customers.  During the fiscal year ended June 30, 2025, we continued our diversification strategies by developing new silicon and packaging platforms to expand our SAM and offer higher performance products.

Process technology and device physics: We focus on specialized process technology in the manufacturing of our products, including vertical DMOS, Shielded Gate Trench, Trench field stop IGBTs, charge-balance high voltage MOSFETs, Schottky Diode and BCDMOS processes.  Our process engineers work closely with our design team to deploy and implement our proprietary manufacturing processes at our Oregon Fab, the Chongqing Fab as well as the third-party foundries that fabricate our wafers.  To improve our process technology, we continue to develop and enhance our expertise in device physics in order to better understand the physical characteristics of materials and the interactions among these materials during the manufacturing process.

New products and new technology platforms: We invest significantly in the development of new technology platforms and introduction of new products.  Because power management affects all electronic systems, we believe that developing a wide portfolio of products enables us to target new applications in addition to expanding our share of power management needs  within existing applications.

 As a technology company, we will continue our significant investment in research and development in our low voltage, medium voltage, and high voltage power discretes, IGBT and power modules and power ICs by developing new technology platforms and new products that allow for improved product performance, higher efficiency packages and higher levels of integration.

Operations    

The manufacture of our products is divided into two major steps: wafer fabrication and packaging and testing. 

Wafer fabrication  

Our Oregon Fab allows us to accelerate the development of our technology and products, as well as to provide better service to our customers.  We allocate our wafer production between our in-house facility and third-party foundries.  Currently wafers from our third-party accounts for around 30% of AOS’s total wafer supply.

Packaging and testing

Completed wafers from the foundries are sent to our in-house packaging and testing facilities or to our subcontractors, where the wafers are cut into individual die, soldered to lead frames, wired to terminals and then encapsulated in protective packaging.  After packaging, all devices are tested in accordance with our specifications and substandard or defective devices are rejected.