-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 ALpSSD8ImxhigLYUHXJSMhwNJv0j88amZjofHHAj4+U+oADIaox3TTnRabQKFgQy
 A8+cWnonEs+xF33umUnY4A==

<SEC-DOCUMENT>0001104659-03-019213.txt : 20030819
<SEC-HEADER>0001104659-03-019213.hdr.sgml : 20030819
<ACCEPTANCE-DATETIME>20030819212113
ACCESSION NUMBER:		0001104659-03-019213
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030815
FILED AS OF DATE:		20030819

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KKR 1996 GP LLC
		CENTRAL INDEX KEY:			0001031667
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10879
		FILM NUMBER:		03856972

	BUSINESS ADDRESS:	
		STREET 1:		KOHLBERG KRAVIS ROBERTS & CO
		STREET 2:		9 WEST 57TH STREET SUITE 4200
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019
		BUSINESS PHONE:		2127508300

	MAIL ADDRESS:	
		STREET 1:		9 WEST 57TH STREET STE 4200
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019
</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>0001031667</rptOwnerCik>
            <rptOwnerName>KKR 1996 GP LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>9 WEST 57TH STREET STE 4200</rptOwnerStreet1>
            <rptOwnerStreet2></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>6937770</value>
        </transactionShares>
        <transactionPricePerShare>
          <value>50.00</value>
        </transactionPricePerShare>
        <transactionAcquiredDisposedCode>
          <value>D</value>
        </transactionAcquiredDisposedCode>
      </transactionAmounts>
      <postTransactionAmounts>
        <sharesOwnedFollowingTransaction>
          <value>9384477</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 KKR Associates 1996 L.P., which is the sole general partner of KKR 1996 Fund 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 KKR 1996 Fund 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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