EXHIBIT 3.1.35

                            CERTIFICATE OF AMENDMENT
                                       OF
                        AMENDED AND RESTATED CERTIFICATE
                                OF INCORPORATION

                                    * * * * *

                  Zycon Corporation, a corporation organized and existing under
                  and by virtue of the General Corporation Law of the State of
                  Delaware,

                  DOES HEREBY CERTIFY:

FIRST:            That the Board of Directors of said corporation, by the
                  unanimous written consent of its members, filed with the
                  minutes of the Board, adopted a resolution proposing and
                  declaring advisable the following amendment to the Amended and
                  Restated Certificate of Incorporation of said corporation:
                  RESOLVED, that the Certificate of Incorporation of Zycon
                  Corporation be amended by changing the First Article thereof
                  so that, as amended, said Article shall be and read as
                  follows:

                  "The name of the Corporation (hereinafter called the
                  'Corporation') is Hadco Santa Clara, Inc."

SECOND:           That in lieu of a meeting and vote of stockholders, the
                  stockholders have given unanimous written consent to said
                  amendment in accordance with the provisions of Section 228 of
                  the General Corporation Law of the State of Delaware.

THIRD:            That the aforesaid amendment was duly adopted in accordance
                  with the applicable provisions of Sections 242 and 228 of the
                  General Corporation Law of the State of Delaware.



         IN WITNESS WHEREOF, said Zycon Corporation has caused this certificate
to be signed by Timothy P. Losik, its Vice President, this 9th day of July,
1997.

                                           ZYCON CORPORATION

                                           By:  /s/ Timothy P. Losik
                                               ---------------------------------
                                               Timothy P. Losik
                                               Vice President