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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,
 C1CGUW3eUov7QMEbeHZN6K/9uTN9DHRX9srCgtWnBs3SRm1ZtvbRkya/gWSkPYt4
 JwfimwfpoJpMupKEoKmEQA==

<SEC-DOCUMENT>0001209191-03-003764.txt : 20030509
<SEC-HEADER>0001209191-03-003764.hdr.sgml : 20030509
<ACCEPTANCE-DATETIME>20030509172216
ACCESSION NUMBER:		0001209191-03-003764
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030508
FILED AS OF DATE:		20030509

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HEI INC
		CENTRAL INDEX KEY:			0000351298
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				410944876
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			0831

	BUSINESS ADDRESS:	
		STREET 1:		1495 STEIGER LAKE LN
		STREET 2:		P O BOX 5000
		CITY:			VICTORIA
		STATE:			MN
		ZIP:			55386
		BUSINESS PHONE:		9524432500

	MAIL ADDRESS:	
		STREET 1:		P O BOX 5000
		STREET 2:		1495 STEIGER LAKE LANE
		CITY:			VICTORIA
		STATE:			MN
		ZIP:			55386

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			COLORADO MEDTECH INC
		CENTRAL INDEX KEY:			0000720013
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS [3845]
		STATE OF INCORPORATION:			CO
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-10078
		FILM NUMBER:		03691060

	BUSINESS ADDRESS:	
		STREET 1:		6175 LONGBOW DR
		CITY:			BOULDER
		STATE:			CO
		ZIP:			80301
		BUSINESS PHONE:		3035302660

	MAIL ADDRESS:	
		STREET 1:		6175 LONGBOW DRIVE
		CITY:			BOULDER
		STATE:			CO
		ZIP:			80301

	FORMER NAME:	
		FORMER CONFORMED NAME:	CYBERMEDIC INC
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>bdn05744_bdn1cmi.xml
<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument>    <schemaVersion>X0101</schemaVersion><documentType>4</documentType><periodOfReport>2003-05-08</periodOfReport><notSubjectToSection16>1</notSubjectToSection16><issuer><issuerCik>0000351298</issuerCik>        <issuerName>HEI INC</issuerName><issuerTradingSymbol>HEII</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0000720013</rptOwnerCik>            <rptOwnerName>COLORADO MEDTECH INC</rptOwnerName>        </reportingOwnerId>        <reportingOwnerAddress>            <rptOwnerStreet1>  </rptOwnerStreet1>            <rptOwnerStreet2>  </rptOwnerStreet2>            <rptOwnerCity>  </rptOwnerCity>            <rptOwnerState>  </rptOwnerState>            <rptOwnerZipCode>  </rptOwnerZipCode>        </reportingOwnerAddress><reportingOwnerRelationship><isDirector>0</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>1</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><nonDerivativeSecurity><securityTitle><value
>Common Stock</value></securityTitle><transactionDate><value>2003-05-08</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>955000</value></transactionShares><transactionValue><value>1.75</value></transactionValue><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>0</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeSecurity><ownerSignature><signatureName> /s/ Peter J. Jensen, Secretary</signatureName><signatureDate>2003-05-09</signatureDate></ownerSignature></ownershipDocument>

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