Photo Release -- Alpha and Omega Semiconductor Releases Robust 600V AlphaMOS-II MOSFET Family

Photo Release -- Alpha and Omega Semiconductor Releases Robust 600V
AlphaMOS-II MOSFET Family

Ideal Solutions for High-Voltage Applications Where Reliability and
Performance Are Critical

SUNNYVALE, Calif., Feb. 15, 2013 (GLOBE NEWSWIRE) -- Alpha and Omega
Semiconductor Limited (AOS) (Nasdaq:AOSL), a designer, developer and global
supplier of a broad range of power semiconductors and power ICs, today
introduced the AOTF11C60 and AOTF20C60, 600V MOSFETs with AlphaMOS™ II
technology. The AlphaMOS II (a patent pending proprietary structure and
process) combines planar-like robustness and controlled switching
characteristics with the low on-resistance performance of super-junction type
devices. The AOTF11C60 and AOTF20C60 are ideally suited for high-voltage
applications where reliability and performance are critical. Such applications
include server, telecom and networking power supplies, uninterruptable power
supplies, solar inverters, industrial motor control systems, and LED lighting.

600V AlphaMOS-II MOSFETs
 Alpha and Omega Semiconductor Releases
 Robust 600V AlphaMOS-II MOSFET Family

A photo accompanying this release is available at
http://www.globenewswire.com/newsroom/prs/?pkgid=17196

AOS's new AlphaMOS II technology offers a simplified manufacturing process
without compromising the core performance of the MOSFET. The AOTF11C60 and
AOTF20C60 offer significant improvement in UIS capability over super-junction.
Additionally the new family has been optimized for low noise operation and
high efficiency by fine tuning the switching parameters. Their low R[DS(ON)],
C[iss] and C[rss], make the new MOSFETs perfectly suited for designs that
require high efficiency, robustness and reliability.

"As efficiency and reliability becomes more and more critical, power designers
need high voltage MOSFETs which can withstand reverse recovery current spikes
and can also reduce switching and conduction losses. With their unique
structure, the new AlphaMOS II products help designers achieve all that in a
more robust solution," said Yalcin Bulut, Vice President of Discrete Product
Lines at AOS.

AOTF11C60 Technical Highlights

  o600V N-channel MOSFET
  oR[DS(ON)] < 0.4 Ohms max at V[GS] = 10V
  oC[OSS] = 108 pF typ
  oQ[g] (10V) = 30 nC typ

AOTF20C60 Technical Highlights

  o600V N-channel MOSFET
  oR[DS(ON)] < 0.25 Ohms max at V[GS] = 10V
  oC[OSS] = 190 pF typ
  oQ[g] (10V) = 52 nC typ
    

Pricing and Availability

The AOTF11C60 and AOTF20C60 100% Rg and UIS tested and are housed in Halogen
Free RoHS compliant TO-220F packages.The devices are immediately available in
production quantities with a lead-time of 12 weeks. The unit price for 10,000
pieces is $0.925 and $1.54, respectively.

About AOS

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 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 www.aosmd.com.

Forward-Looking Statements

This press release contains forward-looking statements that are based on
current expectations, estimates, forecasts and projections of future
performance based on management's judgment, beliefs, current trends and
anticipated product performance. These forward-looking statements include,
without limitation, references to the efficiency and capability of new
products, and the potential to expand into new markets. Forward-looking
statements involve risks and uncertainties that may cause actual results to
differ materially from those contained in the forward-looking statements.
These factors include, but are not limited to, the actual product performance
in volume production, the quality and reliability of the product, our ability
to achieve design wins, the general business and economic conditions, the
state of the semiconductor industry, and other risks as described in the
Company's annual report and other filings with the U.S. Securities and
Exchange Commission. Although the Company believes that the expectations
reflected in the forward looking statements are reasonable, it cannot
guarantee future results, level of activity, performance, or achievements. You
should not place undue reliance on these forward-looking statements. All
information provided in this press release is as of today's date, unless
otherwise stated, and AOS undertakes no duty to update such information,
except as required under applicable law.

CONTACT: Martha Aparicio
         408-789-3233
         martha.aparicio@aosmd.com

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