IRVINE, Calif., Sept. 26, 2006, Sep 26, 2006 (PRIMEZONE via COMTEX News Network) -- Microsemi Corporation (Nasdaq:MSCC), a leading manufacturer of high performance analog/mixed signal integrated circuits and high reliability semiconductors, has introduced the industry's highest power UHF transistor for weather and over-the-horizon radar applications, doubling the power of prior solutions.

Designated the 0405-1000M, the new transistor provides one kilowatt of power to replace two 500-watt devices that previously were the highest available for these mission-critical UHF applications operating at 400-450 MHz, with no compromise in RF performance.

"We are very excited to be the first in the industry with a one kilowatt broadband transistor for this significant market," said Jerry Chang, Director of Microsemi's Radar and RF Module Business in Santa Clara, California. "Now our customers can use this one transistor instead of two less powerful devices to gain substantial reductions in size, complexity and the cost of their amplifier boards," he said.

Charles Leader, Vice President of Microsemi's Power Products RF Division, noted that Microsemi's Power Products Group continues to push the state-of-the-art in silicon bipolar, LDMOS and VDMOS transistor technologies -- as demonstrated by this new one kilowatt device -- while aggressively investing in Wide Band Gap technology for future leading edge applications.

The 0405-1000M transistor is designed for high performance, with a common emitter, class C, output stage offering unparalleled performance of 1000W of peak power and 70% collector efficiency at 450MHz. It employs a hermetically-sealed package for highest reliability in weather and over-the-horizon radar applications.

This latest Microsemi transistor utilizes a new chip design and processing enhancements to offer state-of-the-art performance, notably in high power and high gain over the specified frequency range with 300us pulse width and 10% duty cycle.

0405-100M Key Product Features:

 -- Designed for UHF Radar Application:       400 -- 450 MHz
 -- Medium Pulse Format:                      300 us, 10%
 -- Excellent Output Power:                   1000W
 -- High Power Gain:                          10 dB
 -- Collector Efficiency:                     70 % @450MHz
 -- Compression:                              In Compression
 -- Vcc:                                      +40V

The 0405-100M is available for immediate evaluation. Please contact the factory for evaluation kits. Technical information is available on the Microsemi web site, http://www.microsemi.com.

About Microsemi Corporation

Microsemi is a leading designer, manufacturer and marketer of high performance analog and mixed signal integrated circuits and high reliability semiconductors. The company's semiconductors manage and control or regulate power, protect against transient voltage spikes and transmit, receive and amplify signals.

Microsemi's products include individual components as well as integrated circuit solutions that enhance customer designs by improving performance and reliability, battery optimization, reducing size or protecting circuits. The principal markets the company serves included implanted medical, defense/aerospace and satellite, notebook computers, monitors and LCD TVs, automotive and mobile connectivity applications. More information may be obtained by contacting the company directly or by visiting its web site at http://www.microsemi.com. LX is a trademark of Microsemi Corporation.

The Microsemi Corporation logo is available at http://www.primezone.com/newsroom/prs/?pkgid=1233

"Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995: Any statements set forth in the news release that are not entirely historical and factual in nature are forward-looking statements. For instance, all statements of plans, beliefs, or expectations are forward-looking statements. Forward-looking statements are inherently subject to risks and uncertainties, some of which cannot be predicted or quantified. Potential risks and uncertainties include, but are not limited to, such factors as changes in generally accepted accounting principles, the difficulties regarding the making of estimates and projections, in the hiring and retention of qualified personnel in a competitive labor market, of acquiring and integrating new operations or assets, or in closing or disposing of operations or assets, or possible difficulties in transferring work from one plant to another, or regarding rapidly changing technology and product obsolescence, difficulties predicting the timing and costs of plant closures, the potential inability to realize cost savings or productivity gains or other impediments to improving capacity utilization, potential cost increases, weakness or competitive pricing environment of the marketplace, uncertain demand for and acceptance of the company's products, unexpected results of in-process or planned development or marketing and promotional campaigns, changes in demand for products, difficulties foreseeing future demand, inventory adjustments by customers, customer order cancellations, effects of limited visibility of future sales, potential non-realization of expected orders or non-realization of backlog, product returns, product liability, and other potential adverse business and economic conditions or adverse changes in current or expected industry conditions, business disruptions, travel disruptions, embargoes, epidemics, disasters, wars or potential future effects of the tragic events of September 11, variations in customer order preferences, fluctuations in market prices of the company's common stock and potential unavailability of additional capital on favorable terms, difficulties in implementing company strategies, dealing with environmental matters, other regulatory matters, or any matters involving litigation, arbitration, or investigation, difficulties and costs imposed by law, including Section 404 of the Sarbanes-Oxley Act of 2002, difficulties in determining the scope of, and procuring and maintaining, adequate insurance coverage, difficulties, and costs of protecting patents and other proprietary rights, work stoppages, labor issues, inventory obsolescence, difficulties regarding customer qualification of products, manufacturing facilities and processes, and other difficulties managing consolidation or growth, including in the maintenance of internal controls, the implementation of information systems, and the training of personnel. In addition to these factors and any other factors mentioned elsewhere in this news release, the reader should refer as well to the factors, uncertainties or risks identified in the company's most recent Form 10-K and subsequent Form 10-Q reports filed with the SEC. Additional risk factors shall be identified from time to time in Microsemi's future filings. Microsemi does not undertake to supplement or correct any information in this release that is or becomes incorrect.

Investor Inquiries: David R. Sonksen, Microsemi Corporation, Irvine, CA (949) 221-7101.

This news release was distributed by PrimeZone, www.primezone.com

SOURCE: Microsemi Corporation

Microsemi Corporation
          Financial Contact:
          David R. Sonksen, Executive Vice President and CFO
            (949) 221-7101
          Editorial Contact:
          Cliff Silver, Manager, Corporate Communications
            (949) 221-7112

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