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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Unit</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F20"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2010-11-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2250</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F18"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2008-03-12</value>
            </exerciseDate>
            <expirationDate>
                <value>2018-03-11</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2250</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Unit</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F20"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2010-11-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1125</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F19"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2007-10-26</value>
            </exerciseDate>
            <expirationDate>
                <value>2017-10-25</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1125</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Appreciation Right</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>11.02</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2010-11-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3800</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F12"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2010-11-03</value>
            </exerciseDate>
            <expirationDate>
                <value>2020-02-09</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3800</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Appreciation Right</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>11.02</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2010-11-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3800</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F13"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2011-01-02</value>
            </exerciseDate>
            <expirationDate>
                <value>2020-02-09</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3800</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Appreciation Right</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>12.46</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2010-11-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>16875</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F14"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2011-04-01</value>
            </exerciseDate>
            <expirationDate>
                <value>2019-05-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>16875</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Appreciation Right</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>12.46</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2010-11-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>16875</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F15"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2013-04-01</value>
            </exerciseDate>
            <expirationDate>
                <value>2019-05-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>16875</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Pursuant to the merger agreement between the issuer, Microsemi Corporation (&quot;Microsemi&quot;) and Artful Acquisition Corp., (&quot;Artful&quot;) (the &quot;Merger Agreement&quot;), and in connection with the completion of a cash tender offer by Artful to purchase all of issuer's issued and outstanding common stock, (the &quot;Tender Offer&quot;), this option was assumed and exchanged for an option to purchase 17,709 shares of Microsemi common stock at an exercise price per share of $12.47.</footnote>
        <footnote id="F2">Pursuant to the Merger Agreement and in connection with the Tender Offer, this option was assumed and exchanged for an option to purchase 17,709 shares of Microsemi common stock at an exercise price per share of $12.47.</footnote>
        <footnote id="F3">Pursuant to the Merger Agreement and in connection with the Tender Offer, this option was assumed and exchanged for an option to purchase 17,709 shares of Microsemi common stock at an exercise price per share of $10.53.</footnote>
        <footnote id="F4">Pursuant to the Merger Agreement and in connection with the Tender Offer, this option was assumed and exchanged for an option to purchase 17,709 shares of Microsemi common stock at an exercise price per share of $10.53.</footnote>
        <footnote id="F5">Pursuant to the Merger Agreement and in connection with the Tender Offer, this option was assumed and exchanged for an option to purchase 17,709 shares of Microsemi common stock at an exercise price per share of $14.08.</footnote>
        <footnote id="F6">Pursuant to the Merger Agreement and in connection with the Tender Offer, this option was assumed and exchanged for an option to purchase 17,709 shares of Microsemi common stock at an exercise price per share of $14.08.</footnote>
        <footnote id="F7">Pursuant to the Merger Agreement and in connection with the Tender Offer, this option was assumed and exchanged for an option to purchase 47,225 shares of Microsemi common stock at an exercise price per share of $14.97.</footnote>
        <footnote id="F8">Pursuant to the Merger Agreement, and in connection with the Tender Offer, this option was assumed and exchanged for an option to purchase 20,989 shares of Microsemi common stock at an exercise price per share of $14.44.</footnote>
        <footnote id="F9">Pursuant to the Merger Agreement and in connection with the Tender Offer, this option was assumed and exchanged for an option to purchase 20,989 shares of Microsemi common stock at an exercise price per share of $14.44.</footnote>
        <footnote id="F10">Pursuant to the Merger Agreement and in connection with the Tender Offer, this Stock Appreciation Rights (&quot;SAR&quot;) was assumed and exchanged for an SAR with respect to 17,709 shares of Microsemi common stock at an exercise price per share of $14.58.</footnote>
        <footnote id="F11">Pursuant to the Merger Agreement and in connection with the Tender Offer, this SAR was assumed and exchanged for an SAR with respect to 17,709 shares of Microsemi common stock at an exercise price per share of $14.58.</footnote>
        <footnote id="F12">Pursuant to the Merger Agreement and in connection with the Tender Offer, this SAR was assumed and exchanged for an SAR with respect to 3,987 shares of Microsemi common stock at an exercise price per share of $10.51.</footnote>
        <footnote id="F13">Pursuant to the Merger Agreement and in connection with the Tender Offer, this SAR was assumed and exchanged for an SAR with respect to 3,987 shares of Microsemi common stock at an exercise price per share of $10.51.</footnote>
        <footnote id="F14">Pursuant to the Merger Agreement and in connection with the Tender Offer, this SAR was assumed and exchanged for an SAR with respect to 17,709 shares of Microsemi common stock at an exercise price per share of $11.88.</footnote>
        <footnote id="F15">Pursuant to the Merger Agreement and in connection with the Tender Offer, this SAR was assumed and exchanged for an SAR with respect to 17,709 shares of Microsemi common stock at an exercise price per share of $11.88.</footnote>
        <footnote id="F16">Pursuant to the Merger Agreement and in connection with the Tender Offer, this Restricted Stock Unit (&quot;RSU&quot;) was assumed by Microsemi and exchanged for an RSU covering 4,722 shares of Microsemi common stock.</footnote>
        <footnote id="F17">Pursuant to the Merger Agreement and in connection with the Tender Offer, this RSU was assumed by Microsemi and exchanged for an RSU covering 4,722 shares of Microsemi common stock.</footnote>
        <footnote id="F18">Pursuant to the Merger Agreement and in connection with the Tender Offer, this RSU was assumed by Microsemi and exchanged for an RSU covering 2,361 shares of Microsemi common stock.</footnote>
        <footnote id="F19">Pursuant to the Merger Agreement and in connection with the Tender Offer, this RSU was assumed by Microsemi and exchanged for an RSU covering 1,125 shares of Microsemi common stock.</footnote>
        <footnote id="F20">Each Restricted Stock Unit (&quot;RSU&quot;) represented a contingent right to receive one share of issuer common stock.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Esmat Z. Hamdy</signatureName>
        <signatureDate>2010-11-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
