Press release

Alpha and Omega Semiconductor to Attend the 5th Annual ROTH London Conference

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Alpha and Omega Semiconductor Limited (“AOS”) (Nasdaq:AOSL) today
announced that Mr. Yifan Liang, chief financial officer of the company,
will attend the 5th Annual ROTH London Conference at the
Intercontinental Park Lane, London, England on Wednesday, June 19, 2019.

Mr. Liang will be available for one-on-one and small group meetings with
institutional investors throughout the course of the day. To arrange a
one-on-one meeting, please contact either your ROTH salesperson, or
Alpha and Omega Semiconductor’s investor relations, at

About Alpha and Omega Semiconductor

Alpha and Omega Semiconductor Limited, or AOS, is a designer, developer
and global supplier of a broad range of power semiconductors, including
a wide portfolio of Power MOSFET, IGBT, IPM and Power IC products. AOS
has developed extensive intellectual property and technical knowledge
that encompasses the latest advancements in the power semiconductor
industry, which enables us to introduce innovative products to address
the increasingly complex power requirements of advanced electronics. AOS
differentiates itself by integrating its Discrete and IC semiconductor
process technology, product design, and advanced packaging know-how to
develop high performance power management solutions. AOS’s portfolio of
products targets high-volume applications, including portable computers,
flat panel TVs, LED lighting, smart phones, battery packs, consumer and
industrial motor controls and power supplies for TVs, computers, servers
and telecommunications equipment. For more information, please visit