POWER OF ATTORNEY
Know all persons by these presents, that the

undersigned hereby constitutes and appoints each of Joseph Kaufman,
George
Setton or Simon Painter, signing singly, the undersigned's true
and lawful
attorney-in-fact to:
(1)	execute for and on behalf of the
undersigned, in
the undersigned's capacity as an officer and/or director
of Plexus Corp.
(the "Company"), Forms 3, 4, and 5 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
the undersigned which may be
necessary or desirable to complete and
execute any such Form 3, 4, or 5,
complete and execute any amendment or
amendments thereto, and timely file
such form 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, the undersigned, it being understood that the

documents executed by such attorney-in-fact on behalf of the undersigned

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.
The undersigned hereby grants to
each 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 the undersigned 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.  The
undersigned acknowledges that the foregoing
attorneys-in-fact, in serving
in such capacity at the request of the
undersigned, are not assuming, nor
is the Company assuming, any of the
undersigned's responsibilities to
comply with Section 16 of the
Securities Exchange Act of 1934.
This Power
of Attorney shall remain
in full force and effect until the undersigned is
no longer required to
file Forms 3, 4, and 5 with respect to the
undersigned's holdings of and
transactions in securities issued by the
Company, unless earlier revoked
by the undersigned in a signed writing
delivered to the foregoing
attorneys-in-fact.
IN WITNESS WHEREOF, the
undersigned has caused this
Power of Attorney to be executed as of this
19th day of August, 2002.


/s/  David A. Clark