SC 13D

                          UNITED STATES
               SECURITIES AND EXCHANGE COMMISSION
                     Washington D.C.  20549

                          SCHEDULE 13D

            Under the Securities Exchange Act of 1934

                          Plexus Corp.
                        (Name of Issuer)

             Common Stock, $0.01 Par Value Per Share
                 (Title of Class of Securities)

                           729132 10 0
                         (CUSIP Number)

                         Allan C. Mulder
                      10618 Spicewood Trail
                    Boynton Beach, FL  33436
                         (414) 733-9011

   (Name, Address and Telephone Number of Person Authorized to
               Receive Notices and Communications)

                         August 2, 1994
     (Date of Event which Requires Filing of this Statement)


If the filing person has previously filed a statement on Schedule
13G to report the acquisition which is the subject of this
Schedule 13D, and is filing this schedule because of Rule 13d-
1(b)(3) or (4), check the following box [ ].

Check the following box if a fee is being paid with the statement
[X].  
                          SCHEDULE 13D

CUSIP No.  729132 10 0 

1.   Name of Reporting Person
     S.S. or I.R.S. Identification No. of Above Person
          Allan C. Mulder

2.   Check the Appropriate Box if a Member of a Group
     (a)  [ ]            (b)  [ ]

3.   SEC Use Only

4.   Source of Funds
          PF

5.   Check Box if Disclosure of Legal Proceedings is Required    
     Pursuant to Items 2(d) or 2(e) [ ]

6.   Citizenship or Place of Organization
          Florida

     Number of Shares Beneficially Owned by Each Reporting Person
     With:

7.   Sole Voting Power

          609,663

8.   Shared Voting Power
          0

9.   Sole Dispositive Power

          609,663

10.  Shared Dispositive Power
          0

11.  Aggregate Amount Beneficially Owned by Each Reporting Person

          609,663

12.  Check Box if the Aggregate Amount in Row (11) Excludes
     Certain Shares
          [ ]

13.  Percent of Class Represented by Amount in Row (11)

          8.9%

14.  Type of Reporting Person
          IN

Item 1.   Security and Issuer.

Name of Issuer and Address of Principal Executive Offices:

          Plexus Corp.
          55 Jewelers Park Drive
          P.O. Box 156
          Neenah WI 54956

Security to Which This Statement Relates:

          Common Stock, $.01 Par Value ("Plexus Common")

Item 2.   Identity and Background.

(a)-(c) and (f).  This Schedule 13D is filed on behalf of Allan
C. Mulder, a Florida resident individual and a United States
citizen ("Mulder").  Mulder is retired.  The principal address of
Mulder is 10618 Spicewood Trail, Boynton Beach, Florida 33436.

(d) and (e).  During the last five years, Mulder has not (i) been
convicted in a criminal proceeding (excluding traffic violations
or similar misdemeanors) or (ii) been a party to a civil
proceeding of a judicial or administrative body of competent
jurisdiction and as a result of such proceeding was or is subject
to a judgment, decree or final order enjoining future violations
of, or prohibiting or mandating activities subject to, federal or
state securities laws or finding any violation with respect to
such laws.

Item 3.   Source and Amount of Funds or Other Consideration.

     On June 29, 1994, Mulder purchased 5,000 shares of Plexus
Corp. Class A Preferred Stock ("Plexus Preferred") for cash in a
private placement transaction with Plexus.  (As further explained
below, shares of Plexus Preferred are convertible into shares of
Plexus Common.)  Such shares of Plexus Preferred were purchased
for cash, obtained from personal investment funds.  Plexus used a
portion of the purchase price to repay secured indebtedness of
approzimately $3,000,000 of Plexus to Mulder (which had been lent
from Mulder's personal funds).

Item 4.   Purpose of the Transaction.

     Mulder has been a long time investor in Plexus, with his
interest in Plexus having been acquired, and continuing to be,
for investment purposes.  Mulder purchased the shares of Plexus
Preferred in continuation of that long term investment, and
structured under a form which provides current income to Mr.
Mulder but provides the opportunity for conversion into Plexus
Common.  Mulder may purchase additional Plexus shares, or dispose
of such shares, in market or private transactions, in the event
such actions would be attractive for investment purposes.  See
also Item 3 above with respect to the repayment of debt.
     In June 1995, Mulder was elected by the Plexus board of
directors to a newly created position on the board.  Mulder did
not solicit a seat on the Plexus board, but accepted when offered
a board position by Plexus.

     Other than the foregoing, Mulder has no plans or proposals
which would result in the acquisition or disposition of Plexus
Common Stock or any other action which is enumerated in Item 4 of
Schedule 13D.

Item 5.   Interest in Securities of the Issuer.

(a) and (b).

     As of August 8, 1995, Plexus reported outstanding 6,467,776
shares of Plexus Common.  As of such date, the undersigned had
sold voting and dispositive power with respect to 213,624 shares
of Plexus Common, and 5,000 shares of Plexus Preferred.  Shares
of Plexus Common currently outstanding which are held by Mulder
represent 3.3% of the currently outstanding shares of Plexus
Common.

     Pursuant to the terms of Plexus Preferred, Mulder has the
right to acquire an additional 396,039 shares of Plexus Common
upon full conversion of the Plexus Preferred.  Such a conversion
would result in a total of 609,663 shares of Plexus Common,
representing 8.9% of the outstanding shares of Plexus Common on
the date hereof, as computed in accordance with Rule 13d-3 under
the Securities Exchange Act of 1934.  If the Plexus Preferred is
converted and Mulder acquires the Plexus Common, the shares of
Plexus Common acquired upon conversion will be acquired by Mulder
with sole voting and dispositive power.

(c).  Mulder acquired the 5,000 shares of Plexus Preferred on
June 29, 1994 in a private placement transaction (which was more
than sixty days prior to the first date upon which such shares of
Plexus Preferred first became convertible into shares of Plexus
Common).  Other than the foregoing, there have been no trans-
actions by Mulder with respect to Plexus Common Stock during the
sixty days preceding the date of this Schedule 13D or the date
upon which Mulder was first deemed the beneficial owner of more
than 5% of the class of Plexus Common.

(d).  None.

(e).  Not Applicable.

Item 6.   Contracts, Arrangements, Understandings or
          Relationships with Respect to Securities of the Issuer.
     
     Other than the Preferred Stock Purchase Agreement and the
Designation of Series A Preferred Stock (which is a part of the
Articles of Incorporation of Plexus), there are no contracts,
arrangements, understandings or relationships between Mulder and
any other person with respect to any securities of Plexus.

Item 7.     Material to be Filed as Exhibits. 

     Mulder hereby files, or incorporates into this Schedule 13D
by reference, the following exhibits:

     1.   Preferred Stock Purchase Agreement dated as of June 29,
          1994 between Mulder and Plexus.

     2.   Plexus' Restated Articles of Incorporation, as amended
          through June 29, 1994, including the designation of
          Series A Preferred Stock.  (Incorporated by reference
          from Exhibit 3(i) to Plexus' Report on Form 10-Q for
          the quarter ended June 30, 1994.)

                            SIGNATURE

     After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this state-
ment is true, complete and correct.


     Date:  September 19, 1995.    /s/ Allan C. Mulder           
                                   Allan C. Mulder

EX-1

Exhibit 1 to Mulder 13D


                        PRIVATE PLACEMENT
                     SUBSCRIPTION AGREEMENT
                   (Series A Preferred Stock)


Plexus Corp.
55 Jewelers Park Drive
Neenah, Wisconsin  54956-0156

     1.   Subscription.  The undersigned Allan C. Mulder, a Florida
resident (hereinafter referred to as "Buyer"), hereby agrees to
purchase and pay for 5,000 shares of Series A Preferred Stock $.01
par value (the "Shares") of Plexus Corp., a Wisconsin Corporation
("Plexus"), in the aggregate amount of $5 million of Series A
Preferred Stock, (or $1,000 per share), payable upon acceptance by
Plexus of this Subscription.  The purchase price for the
subscription shall be payable in cash and/or certified check to
Plexus. In connection therewith, Plexus shall pay the remaining
principal balance (and accrued interest) on the $3 million Note
from Plexus to Buyer, such Note shall be cancelled, and Buyer shall
release the related Mortgage against real property owned by
Electronic Assembly Corporation, a subsidiary of Plexus (forms of
the Note and the Mortgage are attached hereto as Exhibit E).  It is
understood and agreed that this Subscription Agreement is not to
become effective until accepted by Plexus.

     2.   Representations by Buyer.  Buyer represents and warrants
to Plexus as follows:

          a.   Buyer has not received an offering memorandum in
               connection with this subscription, but has been
               provided with the following:

               i.   Reports and statements of Plexus:

                    (a)  Annual Report on Form 10-K for the fiscal
                         year ended September 30, 1993.

                    (b)  Annual Report to Shareholders for the
                         year ended September 30, 1993.

                    (c)  Proxy Statement for Annual Meeting of
                         Shareholders on February 16, 1994.

                    (d)  Quarterly Reports on Forms 10-Q for the
                         quarters ended December 31, 1993 and
                         March 31, 1994.

               ii.  The form of designation of Series A Preferred
                    Stock, attached hereto as Exhibit A, including
                    the designations, powers, preferences,
                    qualifications, limitations, restrictions and
                    relative rights of the Series A Preferred
                    Stock.

               iii. A description of Plexus Common Stock and
                    Series A Preferred Stock, attached hereto as
                    Exhibit B.

               iv.  Certain further information regarding Plexus
                    set forth on Exhibit C hereto.

          b.   Plexus has offered to provide and has in fact
               provided to Buyer any additional information
               concerning Plexus requested by Buyer, and Buyer has
               been provided with the opportunity to ask questions
               and receive answers concerning the terms and
               conditions of this transaction and to obtain
               additional information which Plexus possesses or
               can acquire without unreasonable effort or expense
               that is necessary to verify the accuracy of the
               information which has been furnished.

          c.   The Shares are being conveyed without registration
               under the Securities Act of 1933, as amended (the
               "1933 Act") in reliance upon the exemptions
               provided under Section 4(2) of the 1933 Act and
               Regulation D thereunder, as a sale of securities
               not involving a public offering.  As a result of
               relying on exemptions from registration, the Shares
               may not be sold, offered for sale, transferred,
               pledged, or hypothecated in the absence of an
               effective registration statement under the 1933 Act
               or an exemption from registration under the 1933
               Act and the rules and regulations promulgated by
               the Securities and Exchange Commission (the "SEC")
               thereunder.  The Shares are not being registered
               under the laws of any state, and may be subject to
               additional state restrictions on transfer.  The
               Shares have not been reviewed or passed upon in any
               manner by the securities commissioner of any state
               or by the SEC.

          d.   Buyer represents that he is financially able to
               accept the risks associated with this investment
               and that he is able to bear the risks of the
               investment, including the risk of lack of
               liquidity.  Buyer has such knowledge and experience
               in financial and business matters as to be able to
               evaluate the merits and risks of this investment. 
               Buyer has not employed any person as his investment
               representative in connection with evaluating the
               merits and risks of a prospective investment in
               Plexus.  There is no existing market for the
               Shares.

          e.   The securities are being acquired by Buyer for his
               own account for investment and not with a view to
               distribution.  Buyer has no present intention of
               selling or otherwise disposing of any of these
               securities and has no present intention of dividing
               the same with others.  Buyer does not contemplate
               any sale of any of the securities upon the
               occurrence or nonoccurrence of any predetermined
               event or circumstance.  Buyer has no present or
               contemplated agreement, undertaking arrangement,
               obligation, indebtedness or commitment providing
               for, or which is likely to compel a disposition in
               any manner of the securities.  Buyer is unaware of
               any circumstances presently in existence or likely
               to occur which are likely to promote in the future
               any disposition of the securities.

          f.   Neither Plexus nor any of its officers, directors,
               or others is in any way obligated in the future to
               register any of the Shares under the 1933 Act or
               any state securities law, or to provide any
               information necessary to facilitate disposition of
               any of the Shares under any exemption from
               registration provisions under the 1933 Act.  

          g.   Buyer is a bona fide resident of the State of
               Florida.  Florida law provides that if sales of
               Series A Preferred Stock are made to five or more
               persons in Florida, any such sale is voidable by
               the purchaser in such sale either within three days
               after the first tender of consideration is made by
               the purchaser to Plexus, or within three days after
               the availability of that privilege is communicated
               to the purchaser, whichever occurs later.

          h.   Buyer has full right and authority to execute,
               deliver and perform this Agreement to acquire the
               Shares.

          i.   The execution of this Subscription Agreement, the
               issuance of the Series A Preferred Stock, and the
               matters set forth on Exhibit C hereto may be
               considered material non-public information until
               they have been publicly disclosed by Plexus. 
               Therefore, the Buyer will refrain from any and all
               trading in Common Stock of Plexus until such
               matters have been publicly disclosed by Plexus.

     3.   Accredited Investor.  Buyer is an "accredited investor,"
as defined in Rule 501(a) of Regulation D promulgated by the SEC
under the 1933 Act.  A copy of Rule 501(a) is attached as Exhibit
D hereto.

     4.   Counsel.  Buyer has relied upon Buyer's own counsel and
other advisors to the extent he deems necessary as to all matters
and questions concerning the purchase of the Shares and has not
relied upon any opinion of Plexus or its counsel.

     5.   Legended Certificate.  Buyer understands that the
certificate(s) representing the securities purchased, including any
shares of Common Stock to be issued upon conversion of the Shares,
will bear a restrictive legend referring to the restrictions on
transfer thereof resulting from their issuance without registration
under the securities laws, in a form substantially as follows:

          THE SECURITIES REPRESENTED BY THIS CERTIFICATE
          HAVE NOT BEEN REGISTERED UNDER THE SECURITIES
          ACT OF 1933, AS AMENDED, OR THE SECURITIES
          LAWS OF ANY STATES, BUT HAVE BEEN ISSUED IN
          RELIANCE UPON EXEMPTIONS THEREFROM.  THEY HAVE
          BEEN ACQUIRED FOR INVESTMENT AND MAY NOT BE
          SOLD OR TRANSFERRED IN THE ABSENCE OF AN
          EFFECTIVE REGISTRATION STATEMENT UNDER THE
          SECURITIES ACT OF 1933 AND THE LAWS OF ANY
          STATE IN WHICH THEY ARE OFFERED OR SOLD, OR AN
          OPINION OF COUNSEL SATISFACTORY TO PLEXUS
          CORP. (UNLESS WAIVED BY IT) THAT REGISTRATION
          IS NOT REQUIRED UNDER SUCH LAWS.

     6.   Reliance; Indemnification.  Buyer acknowledges that
Plexus will issue the Shares in reliance upon the representations
and warranties made by Buyer herein.  Buyer agrees to indemnify
Plexus and its officers, directors, shareholders and affiliates
from any and all loss, damage, expense or liability (including
reasonable attorneys' fees) arising out of a breach of Buyer's
representations and warranties in this Subscription Agreement.  

     Dated this 29 day of June, 1994.


/s/ Allan C. Mulder                
Allan C. Mulder

Address:

10618 Spicewoood Trail

Boynton Beach, FL  33436

Social Security Number: [omitted
herein for confidentiality]


Subscription accepted this 29th
day of June, 1994.

PLEXUS CORP.


By: Joseph D. Kaufman         
    Vice President