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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 DwbXMESg0ZV6oRcmjcaVXSOQBHfbRPt8n8tEZ4T1hc4hAkbq+Jb3iLzbenGWl/yJ
 P44AHVWrQmSJEy7ObFZeZA==

<SEC-DOCUMENT>0001179110-08-003486.txt : 20080219
<SEC-HEADER>0001179110-08-003486.hdr.sgml : 20080218
<ACCEPTANCE-DATETIME>20080219164923
ACCESSION NUMBER:		0001179110-08-003486
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080214
FILED AS OF DATE:		20080219
DATE AS OF CHANGE:		20080219

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WJ COMMUNICATIONS INC
		CENTRAL INDEX KEY:			0000105006
		STANDARD INDUSTRIAL CLASSIFICATION:	SPECIAL INDUSTRY MACHINERY, NEC [3559]
		IRS NUMBER:				941402710
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		401 RIVER OAKS PARKWAY
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95134
		BUSINESS PHONE:		408-577-6200

	MAIL ADDRESS:	
		STREET 1:		401 RIVER OAKS PARKWAY
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95134

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WATKINS JOHNSON CO
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DIAMOND BRUCE
		CENTRAL INDEX KEY:			0001251404

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-31337
		FILM NUMBER:		08627090

	BUSINESS ADDRESS:	
		STREET 1:		ZILOG INC
		STREET 2:		532 RACE ST
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95126
		BUSINESS PHONE:		4085588500
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-02-14</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000105006</issuerCik>
        <issuerName>WJ COMMUNICATIONS INC</issuerName>
        <issuerTradingSymbol>WJCI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001251404</rptOwnerCik>
            <rptOwnerName>DIAMOND BRUCE</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>401 RIVER OAKS PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN JOSE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95134</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President and CEO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-02-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>4415</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>.78</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>831732</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-02-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>64651</value>
                    <footnoteId id="F3"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>.78</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>767081</value>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">This amount represents the number of shares withheld by the Company to cover tax-withholding obligations of the reporting person arising pursuant to a vesting of a portion of the award.  The restricted stock vests ratably on a monthly basis over a thirty-six month period. The effective date of vest was January 29, 2008 and the stock certificate for the newly issued shares and the corresponding withholding of taxes occured on February 14, 2008.</footnote>
        <footnote id="F2">This amount represents the following items for the reporting person;(a) 34,129 shares acquired pursuant to the terms of the Company's Employee Stock Purchase plan; (b) An award of 500,000 shares of restricted stock that vest solely based on meeting performance criteria offset by 89,375 shares withheld by the Company to cover tax withholding obligations of vested shares; (c) An award of 500,000 shares of restricted stock offset by 178,274 shares withheld by the Company to cover tax withholding obligations of vested shares. This restricted award vests ratably over a thirty-six month period following the date of grant of July 29,2005 ; (d)  72,434 shares of common stock issued without payment for vested restricted stock units offset by 37,182 shares to cover tax withholding obligations for the vested units;  (e) 30,000 shares purchased in various open market transactions.</footnote>
        <footnote id="F3">This amount represents the number of shares withheld by the Company to cover tax-withholding obligations of the reporting person arising pursuant to a vesting of a portion of the award.  The effective date of vest was October 25, 2007 pursuant to the achievement of certain performance criteria.  The stock certificate for the newly issued shares and the corresponding withholding of taxes occured on February 14, 2008.</footnote>
        <footnote id="F4">This amount represents the following items for the reporting person;(a) 34,129 shares acquired pursuant to the terms of the Company's Employee Stock Purchase plan; (b) An award of 500,000 shares of restricted stock that vest solely based on meeting performance criteria offset by 154,026 shares withheld by the Company to cover tax withholding obligations of vested shares; (c) An award of 500,000 shares of restricted stock offset by 178,274 shares withheld by the Company to cover tax withholding obligations of vested shares. This restricted award vests ratably over a thirty-six month period following the date of grant of July 29,2005 ; (d)  72,434 shares of common stock issued without payment for vested restricted stock units offset by 37,182 shares to cover tax withholding obligations for the vested units;  (e) 30,000 shares purchased in various open market transactions.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/Rainer N. Growitz by Power of Attorney</signatureName>
        <signatureDate>2008-02-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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