-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 lsK8k+nRpNBnU4b6EvCH0Q==

<SEC-DOCUMENT>0000950103-06-000527.txt : 20060315
<SEC-HEADER>0000950103-06-000527.hdr.sgml : 20060315
<ACCEPTANCE-DATETIME>20060315175733
ACCESSION NUMBER:		0000950103-06-000527
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060315
FILED AS OF DATE:		20060315
DATE AS OF CHANGE:		20060315

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ULTRA CLEAN HOLDINGS INC
		CENTRAL INDEX KEY:			0001275014
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				611430858
		FISCAL YEAR END:			1231

	MAIL ADDRESS:	
		STREET 1:		150 INDEPENDENCE DRIVE
		CITY:			MENLO PARK
		STATE:			CA
		ZIP:			94025

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FRANCISCO PARTNERS LP
		CENTRAL INDEX KEY:			0001122021

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-50646
		FILM NUMBER:		06689448

	BUSINESS ADDRESS:	
		STREET 1:		TWO EMBARCADERO CENTER SUITE 420
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94111

	MAIL ADDRESS:	
		STREET 1:		TWO EMBARCADERO CENTER SUITE 420
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94111

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FP ULTRA CLEAN LLC
		CENTRAL INDEX KEY:			0001283716

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-50646
		FILM NUMBER:		06689449

	MAIL ADDRESS:	
		STREET 1:		2882 SAND HILL RD
		STREET 2:		C/O ULTRA CLEAN
		CITY:			MENLO PARK
		STATE:			CA
		ZIP:			94025
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>dp02262_franciscoex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-03-15</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001275014</issuerCik>
        <issuerName>ULTRA CLEAN HOLDINGS INC</issuerName>
        <issuerTradingSymbol>UCTT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001122021</rptOwnerCik>
            <rptOwnerName>FRANCISCO PARTNERS LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2882 SAND HILL ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001283716</rptOwnerCik>
            <rptOwnerName>FP ULTRA CLEAN LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2882 SAND HILL ROAD, SUITE 280</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.001</value>
            </securityTitle>
            <transactionDate>
                <value>2006-03-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>4862500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>6.674</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4167400</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote 2</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The price represents the public offering price of $7.10 less the underwriting discounts and commissions of $0.426 per share.</footnote>
        <footnote id="F2">The shares reported herein are directly beneficially owned by FP-Ultra Clean, LLC. A majority of the membership interests of
 FP-Ultra Clean, L.L.C. are held by Francisco Partners, L.P., and Francisco Partners GP, LLC is the general partner of
 Francisco Partners, L.P., and the managing member of FP-Ultra Clean, L.L.C.</footnote>
    </footnotes>

    <remarks>This form is filed on behalf of Francisco Partners, L.P. and its general partner, Francisco Partners GP, LLC.</remarks>

    <ownerSignature>
        <signatureName>/s/ David T. ibnAle, as  a Managing Member</signatureName>
        <signatureDate>2006-03-15</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ David T. ibnAle, as  a Managing Member</signatureName>
        <signatureDate>2006-03-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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