Microsemi to Present At the 18th Annual Wachovia Nantucket Conference

IRVINE, Calif., June 19, 2008 (PRIME NEWSWIRE) -- Microsemi Corporation
(Nasdaq:MSCC), a leading manufacturer of high performance analog mixed-signal
integrated circuits and high reliability semiconductors, will present at the
18th Annual Wachovia Nantucket Conference at the White Elephant Hotel in
Nantucket, MA on June 23-26, 2008.

A live Webcast of this presentation will be available as well, for those not
able to attend in person, through Microsemi's website on Thursday, June 26, 2008
at 10:45 am EDT at www.microsemi.com.

Microsemi Corporation, with corporate headquarters in Irvine, California, 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
company's PowerDsine systems provide a cost-effective way to deliver power over
existing Ethernet infrastructures. Principal markets served include 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 website at
http://www.microsemi.com.

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

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CONTACT: Microsemi Corporation
Financial Contact:
John W. Hohener, Vice President and CFO
(949) 221-7100
Editorial Contact:
Cliff Silver, Corporate Communications Manager
(949) 221-7100