Document:

<PAGE>
                                                                     Exhibit 4.3

                            PHILIPS ELECTRONICS N.V.,
             (previously called N.V. Philips' Gloeilampenfabrieken)

                                     Issuer

                                       TO

                          MORGAN GUARANTY TRUST COMPANY
                                  OF NEW YORK,

                                     Trustee

                                 --------------
                          FIRST SUPPLEMENTAL INDENTURE

                             Dated as of May 6, 1994

                                 --------------

                                 Debt Securities
<PAGE>
      FIRST SUPPLEMENTAL INDENTURE, dated as of May 6, 1994, between PHILIPS
ELECTRONICS N.V., a corporation duly organized and validly existing under the
laws of The Netherlands (herein called "New Electronics" and previously called
N.V. Philips' Gloeilampenfabrieken), having its principal office at
Groenewoudseweg 1, 5621 BA Eindhoven, The Netherlands and MORGAN GUARANTY TRUST
COMPANY OF NEW YORK, a banking corporation duly organized and existing under the
laws of New York, as Trustee under the Indenture hereinafter defined (herein
called the "Trustee").

                                    RECITALS

      Philips Electronics N.V., the parent company of N.V. Philips
Gloeilampenfabrieken before the Merger (as hereinafter defined), has heretofore
executed and delivered to the Trustee a certain indenture, dated as of August 1,
1993 (herein called the "Indenture"), pursuant to which one or more series of
unsecured debentures, notes or other evidences of indebtedness (herein called
the "Securities") may be issued from time to time. All terms used in this First
Supplemental Indenture which are defined in the Indenture and not defined herein
shall have the meanings assigned to them in the Indenture.

      Subsection (1) of Section 801 of the Indenture provides that the Company
shall not merge into any other Person unless the Person into which the Company
is merged shall expressly assume, by a supplement to the Indenture, the due and
punctual payment of the principal of and any premium and interest (including all
additional amounts, if any, payable pursuant to Section 1004 of the Indenture
and subsection (3) of Section 801 of the Indenture) on all the Securities and
the performance or observance of every covenant of the Indenture to be performed
or observed by the Company.

      Subsection (1) of Section 901 of the Indenture provides that a
Supplemental Indenture may be entered into by the Company when authorized by a
Board Resolution, without the consent of any Holders, for the purpose of
evidencing the succession of another Person to the Company and the assumption by
any such successor of the covenants of the Company contained in the Indenture.
<PAGE>
      Simultaneously herewith, the Company has merged into its wholly owned
subsidiary, New Electronics (the "Merger").

      The Company desires and hereby requests the Trustee to join with it in the
execution and delivery of this First Supplemental Indenture.

      The Company has furnished the Trustee with (i) Opinions of Counsel stating
that the execution of the First Supplemental Indenture is authorized or
permitted by the Indenture, (ii) an Officers' Certificate stating that all
conditions precedent provided for in the Indenture with respect to this First
Supplemental Indenture have been complied with and (iii) a copy of the
resolutions of the Board of Management of New Electronics certified by its
Secretary pursuant to which New Electronics' execution and delivery of this
First Supplemental Indenture has been authorized.

      All things necessary to make this First Supplemental Indenture a valid
agreement between New Electronics and the Trustee and a valid supplement to the
Indenture have been done.

            NOW, THEREFORE, THIS FIRST SUPPLEMENTAL INDENTURE WITNESSETH:

            For and in consideration of the premises, the parties covenant and
      agree:

                  (1) New Electronics hereby expressly assumes the due and
            punctual payment of the principal of and any premium and interest
            (including all additional amounts, if any, payable pursuant to
            Section 1004 of the Indenture and subsection (3) of Section 801 of
            the Indenture) on all the Securities and the performance or
            observance of every covenant of the Indenture on the part of the
            Company to be performed or observed.

                 (2) New Electronics hereby agrees to indemnify the Holder or
            the beneficial owner of each Security against (a) any tax,
            assessment or governmental charge imposed on any such Holder or the
            beneficial owner or required to be withheld or deducted from

                                       -2-
<PAGE>
         any payment to such Holder or the beneficial owner as a consequence
         of the Merger and (b) any costs or expenses of the act of the
         Merger.

                  (3) The Recitals herein contained are made by the Company and
         the Trustee shall have no responsibility therefor. The Trustee shall
         have no responsibility for the validity or sufficiency of this First
         Supplemental Indenture.

                  (4) No notation on Securities authenticated and delivered
         hereafter or exchange of new Securities for Outstanding Securities
         shall be required in respect of this First Supplemental Indenture.

                  This instrument may be executed in any number of counterparts,
each of which so executed shall be deemed to be an original, but all such
counterparts shall together constitute but one and the same instrument.

                                       -3-
<PAGE>
      IN WITNESS WHEREOF, the parties hereto have caused this First Supplemental
Indenture to be duly executed on behalf of each of them all as of the day and
year first above written.

                                      PHILIPS ELECTRONICS N.V.
                                       (Previously called N.V. Philips'
                                               Gloeilampenfabrieken)

                                      By:       /s/ D.G. Eustace
                                         -----------------------
                                        Name:  D.G. Eustace
                                        Title: Executive Vice-President
                                               and Member of the Board
                                               of Management

                                      By:      /s/ F.P. Carrubba
                                         -----------------------
                                        Name:  F.P. Carrubba

                                        Title: Executive Vice-President
                                               and Member of the Board
                                               of Management

                                      MORGAN GUARANTY TRUST COMPANY
                                      OF NEW YORK, as Trustee

                                      By:    /s/ John W. Cole
                                         -----------------------
                                        Name:  John W. Cole
                                        Title: Vice President

                                       -4-
<PAGE>
STATE OF NEW YORK  )
                   ) ss.:
COUNTY OF NEW YORK )

      On the sixth day of May, 1994, before me personally came John W. Cole, to
me known, who, being by me duly sworn, did depose and say that he is Vice
President of MORGAN GUARANTY TRUST COMPANY of New York, one of the corporations
described in and which executed the foregoing instrument, and that he signed his
name thereto by authority of the Board of Directors.

                                             By:   /s/ Joanne E. Ilse
                                                 -------------------------------

                                             Joanne E. Ilse
                                             Notary Public, State of New York
                                             No. 01IL5018680
                                             Qualified in Queens County
                                             Commission Expires October 4, 1995

[NOTARIAL SEAL]

                                       -5-<PAGE>
                                                                     Exhibit 4.4
================================================================================

                      KONINKLIJKE PHILIPS ELECTRONICS N.V.

                                    As Issuer

                                       TO

                                  CITIBANK N.A.

                                   As Trustee

                                 ---------------

                          SECOND SUPPLEMENTAL INDENTURE

                              Dated as of [ ], 2002

                            TO THE INDENTURE BETWEEN
    KONINKLIJKE PHILIPS ELECTRONICS N.V. (formerly Philips Electronics N.V.),
                                 AS ISSUER, AND
                         CITIBANK N.A. (as successor to
             MORGAN GUARANTY TRUST COMPANY OF NEW YORK) AS TRUSTEE,
                           DATED AS OF AUGUST 1, 1993,
             AS AMENDED BY THE FIRST SUPPLEMENTAL INDENTURE BETWEEN
    KONINKLIJKE PHILIPS ELECTRONICS N.V. (formerly Philips Electronics N.V.)
                                 AS ISSUER, AND
                         CITIBANK N.A. (as successor to
             MORGAN GUARANTY TRUST COMPANY OF NEW YORK) AS TRUSTEE,
                             DATED AS OF MAY 6, 1994

                                ----------------

================================================================================
<PAGE>
                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                         Page
<S>                                                                      <C>
                                   ARTICLE ONE
                           AMENDMENTS TO THE INDENTURE

   SECTION 101.       SECURITY FORMS.......................................2
   SECTION 102.       COVENANTS............................................2

                                   ARTICLE TWO
                            MISCELLANEOUS PROVISIONS

   SECTION 201.       INTEGRAL PART........................................3
   SECTION 202.       GENERAL DEFINITIONS..................................3
   SECTION 203.       ADOPTION, RATIFICATION AND CONFIRMATION..............3
   SECTION 204.       COUNTERPARTS.........................................3
   SECTION 205.       SEVERABILITY.........................................3
   SECTION 206.       TRUSTEE NOT RESPONSIBLE FOR RECITALS.................3
   SECTION 207.       GOVERNING LAW........................................4
</TABLE>
<PAGE>
                 KONINKLIJKE PHILIPS ELECTRONICS N.V., AS ISSUER
                          SECOND SUPPLEMENTAL INDENTURE

         THIS SECOND SUPPLEMENTAL INDENTURE, dated as of          , 2002, is
entered into between KONINKLIJKE PHILIPS ELECTRONICS N.V., a corporation duly
organized and validly existing under the laws of The Netherlands (the "ISSUER"),
having its registered office at Breitner Center, Amstelplein 2, 1070 MX
Amsterdam, The Netherlands, and CITIBANK N.A., (as successor to Morgan Guaranty
Trust Company of New York pursuant to a Tripartite Agreement among the Issuer,
Citibank N.A. and Morgan Guaranty Trust Company of New York dated May 20, 1994),
a company duly organized and existing under the laws of the State of New York,
as Trustee (the "TRUSTEE") under the Indenture dated as of August 1, 1993
between the Issuer and the Trustee (the "INITIAL BASE INDENTURE"), as amended by
the First Supplemental Indenture dated as of May 6, 1994 between the Issuer and
the Trustee (the "FIRST SUPPLEMENTAL INDENTURE" and, collectively, the
"SUPPLEMENTED BASE INDENTURE" and, as supplemented by this Second Supplemental
Indenture, the "INDENTURE").

                                    RECITALS

         The Issuer has delivered to the Trustee the Initial Base Indenture on
August 1, 1993 and the First Supplemental Indenture on May 6, 1994.

         Section 901(5) of the Supplemented Base Indenture provides that the
Issuer, when authorized by or pursuant to a Board Resolution, and the Trustee,
at any time and from time to time, may enter into one or more indentures
supplemental to the Indenture to add to, change or eliminate any of the
provisions of this Indenture in respect of the Securities of one or more series,
provided that any such addition, change or elimination (A) shall neither (i)
apply to any Security of any series Outstanding when such supplemental Indenture
is executed and entitled to the benefit of such provision nor (ii) modify the
rights of any Holder of any such Security with respect to such provision or (B)
shall become effective only when there is no such Security Outstanding.

         The Issuer and the Trustee deem it advisable to enter into this Second
Supplemental Indenture for the purpose of amending and supplementing certain
sections of the Supplemented Base Indenture.

         All conditions and requirements of the Indenture necessary to make this
Second Supplemental Indenture a valid, binding and legal instrument in
accordance with its terms have been performed and fulfilled by the parties
hereto.

         NOW, THEREFORE, THIS SUPPLEMENTAL INDENTURE WITNESSETH,

         For and in consideration of the premises, it is mutually agreed, for
the equal and proportionate benefit of all Holders, as follows:

                                        1
<PAGE>
                                   ARTICLE ONE
                           AMENDMENTS TO THE INDENTURE

SECTION 101. SECURITY FORMS

         Section 203 of the Supplemented Base Indenture shall be amended by:

         (a) Inserting after the paragraph (d) of Section 203 on page 21 of the
Supplemented Base Indenture the following:

                    "(e) any withholding or deduction imposed on a payment to an
           individual which is required to be made pursuant to any European
           Union Directive on the taxation of savings implementing the
           conclusions of ECOFIN Council meeting of November 26-27, 2000 or any
           law implementing or complying with, or introduced in order to conform
           to, such Directive;

                    (f) any withholding or deduction required to be made with
           respect to a Security presented for payment by or on behalf of a
           Holder of such Security who would have been able to avoid such
           withholding or deduction by presenting the relevant Security to
           another Paying Agent in a member state of the European Union; or"

         (b) deleting paragraph (e) of Section 203 and replacing it with new
paragraph (g) as follows:

                  "(g) any combination of (a), (b), (c), (d), (e) or (f) above."

SECTION 102. COVENANTS

         Article 10 of the Supplemented Base Indenture shall be amended by:

         (a) Inserting the following sentence of the end of the second paragraph
Section 1004 ("ADDITIONAL AMOUNTS"):

                  "The Company further covenants that if the conclusions of the
                  ECOFIN Council meeting of November 26-27, 2000 are
                  implemented, it will maintain a paying agent in a European
                  Union member state that will not be obliged to withhold or
                  deduct tax pursuant to any directive implementing such
                  conclusions (such obligation of the Company being conditional
                  upon the existence of such member state). The Company may, at
                  any time, terminate the appointment of any paying agent,
                  appoint additional paying agents, and approve any change in
                  the office through which any paying agent acts. In the event
                  that the Issuer should change its paying agent provided in
                  accordance with this clause, the Issuer shall give notice in
                  accordance with Section 105 of the Indenture."

                                        2
<PAGE>
                                   ARTICLE TWO
                            MISCELLANEOUS PROVISIONS

SECTION 201. INTEGRAL PART

         This Second Supplemental Indenture constitutes an integral part of the
Indenture. In the event of a conflict or inconsistency between the Supplemented
Base Indenture and this Second Supplemental Indenture, this Second Supplemental
Indenture shall control.

SECTION 202. GENERAL DEFINITIONS

         For all purposes of this Second Supplemental Indenture:

         capitalized terms used herein without definition shall have the
meanings specified in the Supplemented Base Indenture; and

         the terms "HEREIN", "HEREOF", "HEREUNDER", "HEREOF" and other words of
similar import refer to this Second Supplemental Indenture.

SECTION 203. NO APPLICATION TO SECURITIES OF ALL SERIES OUTSTANDING

         The provisions of the Indenture effected through this Second
Supplemental Indenture shall not have retroactive effect and shall neither (i)
apply to any Security of any series Outstanding when such Second Supplemental
Indenture is executed and entitled to the benefit of such provision nor (ii)
modify the rights of any Holder of any such Security with respect to such
provision.

SECTION 204. ADOPTION, RATIFICATION AND CONFIRMATION

         The Supplemented Base Indenture, as supplemented and amended by this
Second Supplemental Indenture, is in all respects hereby adopted, ratified and
confirmed.

SECTION 205. COUNTERPARTS

         This Second Supplemental Indenture may be executed in any number of
counterparts, each of which when so executed shall be deemed an original; and
all such counterparts shall together constitute but one and the same instrument.

SECTION 206. SEVERABILITY

         If any provision in the Supplemented Base Indenture or this Second
Supplemental Indenture shall be invalid, illegal or unenforceable, the validity,
legality and enforceability of the remaining provisions shall not in any way be
affected or impaired thereby.

SECTION 207. TRUSTEE NOT RESPONSIBLE FOR RECITALS

         The recitals herein contained are made by the Issuer and not by the
Trustee, and the Trustee assumes no responsibility for the correctness thereof.
The Trustee makes no representation as to the validity or sufficiency of this
Second Supplemental Indenture.

                                        3
<PAGE>
SECTION 208. GOVERNING LAW

         THIS SECOND SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY AND BE
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

                                        4
<PAGE>
         IN WITNESS WHEREOF, the parties hereto have caused this Second
Supplemental Indenture to be duly executed and their respective corporate seals
to be hereunto fixed and attested as of the day and year first written above.

                                   KONINKLIJKE PHILIPS ELECTRONICS N.V.
                                   as Issuer

                                   By:
                                       -------------------------------
                                       Name:
                                       Title:

                                   CITIBANK N.A.
                                   as Trustee

                                   By:
                                       -------------------------------
                                       Name:
                                       Title:

                                        5

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