<?xml version="1.0" encoding="utf-8"?>
<ownershipDocument>
    <schemaVersion>X0101</schemaVersion>

    <documentType>4</documentType>
  <periodOfReport>2003-07-15</periodOfReport>
  <notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000911149</issuerCik>
        <issuerName>MICRO COMPONENT TECHNOLOGY INC</issuerName>
        <issuerTradingSymbol>MCTI</issuerTradingSymbol>
  </issuer>
  <reportingOwner>
    <reportingOwnerId>
            <rptOwnerCik>0001206021</rptOwnerCik>
            <rptOwnerName>MAUN THOMAS P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
      <isDirector>0</isDirector>
      <isOfficer>1</isOfficer>
      <isTenPercentOwner>0</isTenPercentOwner>
      <isOther>0</isOther>
      <officerTitle>Chief Financial Officer</officerTitle>
    </reportingOwnerRelationship>
  </reportingOwner>
  <derivativeSecurity>
    <securityTitle>
      <value>Employee Stock Option (right to buy)</value>
    </securityTitle>
    <conversionOrExercisePrice>
      <value>0.90</value>
    </conversionOrExercisePrice>
    <transactionDate>
      <value>2003-07-15</value>
      <footnoteId id="F1"/>
    </transactionDate>
    <transactionCoding>
      <transactionFormType>4</transactionFormType>
      <transactionCode>A</transactionCode>
      <equitySwapInvolved>0</equitySwapInvolved>
    </transactionCoding>
    <transactionTimeliness>
      <value/>
    </transactionTimeliness>
    <transactionAmounts>
      <transactionShares>
        <value>150000</value>
      </transactionShares>
      <transactionValue>
        <value>0</value>
      </transactionValue>
      <transactionAcquiredDisposedCode>
        <value>A</value>
      </transactionAcquiredDisposedCode>
    </transactionAmounts>
    <exerciseDate>
      <value>2004-06-25</value>
    </exerciseDate>
    <expirationDate>
      <value>2013-06-25</value>
    </expirationDate>
    <underlyingSecurity>
      <underlyingSecurityTitle>
        <value>Common Stock</value>
      </underlyingSecurityTitle>
      <underlyingSecurityShares>
        <value>150000</value>
      </underlyingSecurityShares>
    </underlyingSecurity>
    <postTransactionAmounts>
      <sharesOwnedFollowingTransaction>
        <value>263436</value>
      </sharesOwnedFollowingTransaction>
    </postTransactionAmounts>
    <ownershipNature>
      <directOrIndirectOwnership>
        <value>D</value>
      </directOrIndirectOwnership>
    </ownershipNature>
  </derivativeSecurity>
  <footnotes>
    <footnote id="F1">The option was granted on June 25, 2003.  Pursuant to the terms of the plan, the exercise price is the closing sale price on July 15, 2003.  The option becomes exercisable in four equal annual installments beginning with June 25, 2004.</footnote>
  </footnotes>
  <ownerSignature>
    <signatureName>/s/ Thomas P. Maun</signatureName>
    <signatureDate>2003-07-16</signatureDate>
  </ownerSignature>
</ownershipDocument>

