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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,
 Ml526Goi6s81TTczGByorbTBXRS9UTg9mVyVGC7yLiKvOchgoorwz6EcfRgFcNkX
 f0HHXv5LMCvL2Urs/OeDcg==

<SEC-DOCUMENT>0001209191-03-018665.txt : 20030822
<SEC-HEADER>0001209191-03-018665.hdr.sgml : 20030822
<ACCEPTANCE-DATETIME>20030822172954
ACCESSION NUMBER:		0001209191-03-018665
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030822
FILED AS OF DATE:		20030822

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ALLEN JOHN H
		CENTRAL INDEX KEY:			0001222023

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-04298
		FILM NUMBER:		03863195

	BUSINESS ADDRESS:	
		STREET 1:		COHU INC
		STREET 2:		12367 CROSTHWAITE CIRCLE
		CITY:			POWAY
		STATE:			CA
		ZIP:			92064-6817

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COHU INC
		CENTRAL INDEX KEY:			0000021535
		STANDARD INDUSTRIAL CLASSIFICATION:	INSTRUMENTS FOR MEAS & TESTING OF ELECTRICITY & ELEC SIGNALS [3825]
		IRS NUMBER:				951934119
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		12367 CROSTHWAITE CIRCLE
		CITY:			POWAY
		STATE:			CA
		ZIP:			92064-6817
		BUSINESS PHONE:		858-848-8100

	MAIL ADDRESS:	
		STREET 1:		12367 CROSTHWAITE CIRCLE
		CITY:			POWAY
		STATE:			CA
		ZIP:			92064-6817

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COHU ELECTRONICS INC
		DATE OF NAME CHANGE:	19720809
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-08-22</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000021535</issuerCik><issuerName>COHU INC</issuerName>        <issuerTradingSymbol>COHU</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001222023</rptOwnerCik><rptOwnerName>ALLEN JOHN H</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>12367 CROSTHWAITE CIRCLE</rptOwnerStreet1><rptOwnerStreet2></rptOwnerStreet2><rptOwnerCity>POWAY</rptOwnerCity><rptOwnerState>CA</rptOwnerState><rptOwnerZipCode>92064</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>VP Finance &amp; CFO</officerTitle></reportingOwnerRelationship></reportingOwner><nonDerivativeTable
><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-08-22</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>20000</value></transactionShares><transactionPricePerShare><value>12.07</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>38528</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-08-22</value></tr
ansactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>20000</value></transactionShares><transactionPricePerShare><value>21.68</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>18528</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><derivativeTable><derivativeTransaction><securityTitle><value>Employee Stock Option (Right to buy)</value></securityTitle><conversionOrExercisePrice><value>12.07</value></conversionOrExercisePrice><transactionDate><value>2003-08-22</value><
/transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>20000</value></transactionShares><transactionPricePerShare><value>12.07</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2000-03-10</value><footnoteId id="F1" /></exerciseDate><expirationDate><value>2009-03-10</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>20000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>30000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></dir
ectOrIndirectOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">The option vests in four equal annual installments beginning March 10, 2000</footnote></footnotes><remarks></remarks><ownerSignature><signatureName>/s/ John H. Allen</signatureName><signatureDate>2003-08-22</signatureDate></ownerSignature></ownershipDocument>

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