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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,
 RpoMXJc4DURnhSTzBPSTc3q8Vx/ByACfxPvMBYYkQmCAL1kUtOGcvWA5nnGQkuFo
 CNOKkL7oiS5cp4H1o/OtIg==

<SEC-DOCUMENT>0001036960-10-000001.txt : 20100126
<SEC-HEADER>0001036960-10-000001.hdr.sgml : 20100126
<ACCEPTANCE-DATETIME>20100126164628
ACCESSION NUMBER:		0001036960-10-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100125
FILED AS OF DATE:		20100126
DATE AS OF CHANGE:		20100126

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LONDON KEVIN B
		CENTRAL INDEX KEY:			0001230268

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15181
		FILM NUMBER:		10548136

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FAIRCHILD SEMICONDUCTOR INTERNATIONAL INC
		CENTRAL INDEX KEY:			0001036960
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				043363001
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		82 RUNNING HILL RD
		CITY:			SOUTH PORTLAND
		STATE:			ME
		ZIP:			04106
		BUSINESS PHONE:		2077758100

	MAIL ADDRESS:	
		STREET 1:		82 RUNNING HILL RD
		CITY:			SOUTH PORTLAND
		STATE:			ME
		ZIP:			04106

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FSC SEMICONDUCTOR CORP
		DATE OF NAME CHANGE:	19970424
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-01-25</periodOfReport>

    <issuer>
        <issuerCik>0001036960</issuerCik>
        <issuerName>FAIRCHILD SEMICONDUCTOR INTERNATIONAL INC</issuerName>
        <issuerTradingSymbol>FCS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001230268</rptOwnerCik>
            <rptOwnerName>LONDON KEVIN B</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>FAIRCHILD SEMICONDUCTOR INTERNATIONAL</rptOwnerStreet1>
            <rptOwnerStreet2>82 RUNNING HILL ROAD</rptOwnerStreet2>
            <rptOwnerCity>SOUTH PORTLAND</rptOwnerCity>
            <rptOwnerState>ME</rptOwnerState>
            <rptOwnerZipCode>04106</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Senior Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2010-01-25</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>900</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>9.79</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>11552</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Paul D. Delva (Attorney-in-fact)</signatureName>
        <signatureDate>2010-01-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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