EXHIBIT 24
				POWER OF ATTORNEY

Know all by these presents, that Dennis Leibel hereby constitutes and appoints
James J. Peterson, David R. Sonksen, Ralph Brandi, Debbie Weber and John M.
Holtrust, or any of them acting singly, each with full power of substitution,
Dennis Leibel's true and lawful attorney in fact to:

(1)	execute for and on behalf of Dennis Leibel, in Dennis Leibel's capacity
as an executive officer and/or director of MICROSEMI CORPORATION (the "Company"):
(i) a Form 3, Initial Statement of Beneficial Ownership of Securities; (ii) a
Form 4, Statement of Changes in Beneficial Ownership of Securities; and (iii) a
Form 5, Annual Statement of Beneficial Ownership of Securities,  in accordance
with Section 16(a) of the Securities Exchange Act of 1934 and the rules thereunder;
(2)	do and perform any and all acts for and on behalf of Dennis Leibel which
may be necessary or desirable to complete and execute such Form 3, Form 4, and
Form 5 report(s) and to timely file such Form(s) with the United States Securities
and Exchange Commission and any stock exchange or similar authority; and
(3)	take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney in fact, may be of benefit to,
in the best interest of, or legally required by, Dennis Leibel, it being understood
that the documents executed by such attorney in fact on behalf of Dennis Leibel
pursuant to this Power of Attorney shall be in such form and shall contain such
terms and conditions as such attorney in fact may approve in such attorney in
fact's discretion.

Dennis Leibel hereby grants to such attorney in fact full power and authority
to do and perform any and every act and thing whatsoever requisite, necessary,
or proper to be done in the exercise of any of the rights and powers herein
granted, as fully to all intents and purposes as Dennis Leibel might or could do
if personally present, with full power of substitution or revocation, hereby
ratifying and confirming all that such attorney in fact, or such attorney in
fact's substitute or substitutes, shall lawfully do or cause to be done by
virtue of this Power of Attorney and the rights and powers herein granted.
Dennis Leibel acknowledges that the foregoing attorney in fact, in serving in
such capacity at the request of Dennis Leibel, is not assuming, nor is the
Company assuming, any of Dennis Leibel's responsibility to comply with
Section 16 of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect until revoked by
Dennis Leibel in a signed writing delivered to the foregoing attorney in fact.

IN WITNESS WHEREOF, Dennis Leibel has caused this Power of Attorney to be
executed as of this 27th day of August, 2002.

						/s/  Dennis Leibel
						Signature