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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 JkPaZAwfrMVDExz+J1A0GNcG9FpTqGPtpDAiDgKDWllZMjBeHVyhfNPAI6NlTQ43
 +GALQvuQYlvxaMxInJlK9A==

<SEC-DOCUMENT>0001104659-03-019216.txt : 20030819
<SEC-HEADER>0001104659-03-019216.hdr.sgml : 20030819
<ACCEPTANCE-DATETIME>20030819212211
ACCESSION NUMBER:		0001104659-03-019216
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030815
FILED AS OF DATE:		20030819

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KKR ASSOCIATES NXS LP
		CENTRAL INDEX KEY:			0001260364
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10879
		FILM NUMBER:		03856974

	BUSINESS ADDRESS:	
		STREET 1:		C/O KKR & CO
		STREET 2:		9 WEST 57TH ST 41ST FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019

	MAIL ADDRESS:	
		STREET 1:		C/O KKR& CO
		STREET 2:		9 WEST 57TH ST 41ST FL
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMPHENOL CORP /DE/
		CENTRAL INDEX KEY:			0000820313
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRONIC CONNECTORS [3678]
		IRS NUMBER:				222785165
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		358 HALL AVE
		CITY:			WALLINGFORD
		STATE:			CT
		ZIP:			06492
		BUSINESS PHONE:		2032658900
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0" encoding="utf-8"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>
  <periodOfReport>2003-08-15</periodOfReport>
  <notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000820313</issuerCik>
        <issuerName>AMPHENOL CORP /DE/</issuerName>
        <issuerTradingSymbol>APH</issuerTradingSymbol>
  </issuer>
  <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001260364</rptOwnerCik>
            <rptOwnerName>KKR ASSOCIATES NXS LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O KKR&amp; CO</rptOwnerStreet1>
            <rptOwnerStreet2>9 WEST 57TH ST 41ST FL</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10019</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
      <isDirector>0</isDirector>
      <isOfficer>0</isOfficer>
      <isTenPercentOwner>1</isTenPercentOwner>
      <isOther>0</isOther>
    </reportingOwnerRelationship>
  </reportingOwner>
  <nonDerivativeTable>
    <nonDerivativeTransaction>
      <securityTitle>
        <value>Class A Common Stock</value>
      </securityTitle>
      <transactionDate>
        <value>2003-08-15</value>
      </transactionDate>
      <transactionCoding>
        <transactionFormType>4</transactionFormType>
        <transactionCode>J</transactionCode>
        <equitySwapInvolved>0</equitySwapInvolved>
        <footnoteId id="F1"/>
      </transactionCoding>
      <transactionTimeliness>
        <value></value>
      </transactionTimeliness>
      <transactionAmounts>
        <transactionShares>
          <value>1969249</value>
        </transactionShares>
        <transactionPricePerShare>
          <value>50.00</value>
        </transactionPricePerShare>
        <transactionAcquiredDisposedCode>
          <value>D</value>
        </transactionAcquiredDisposedCode>
      </transactionAmounts>
      <postTransactionAmounts>
        <sharesOwnedFollowingTransaction>
          <value>2446932</value>
        </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
        <directOrIndirectOwnership>
          <value>I</value>
        </directOrIndirectOwnership>
        <natureOfOwnership>
          <value>See Footnote</value>
          <footnoteId id="F2"/>
        </natureOfOwnership>
      </ownershipNature>
    </nonDerivativeTransaction>
  </nonDerivativeTable>
  <footnotes>
    <footnote id="F1">Sale of shares in a registered underwritten secondary offering.  The underwriting agreement was entered into on August 15, 2003; the sale is expected to be consummated on August 20, 2003.  The reported price of $50.00 per share does not reflect an underwriting discount of $1.98 per share.  The Reporting Person received $48.02 per share.</footnote>
    <footnote id="F2">As the sole general partner of NXS Associates L.P., the Reporting Person may be deemed, for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Act"), to be a "ten percent beneficial owner" of shares of Class A Common Stock directly held by NXS Associates L.P.  However, pursuant to Rule 16a-1(a)(2) promulgated under the Act, the Reporting Person disclaims that it is the beneficial owner of such Class A Common Stock.</footnote>
  </footnotes>
  <ownerSignature>
    <signatureName>/s/ William J. Janetschek, Attorney-in-Fact for Reporting Person</signatureName>
    <signatureDate>2003-08-19</signatureDate>
  </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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