-----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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<SEC-DOCUMENT>0001235847-09-000001.txt : 20090313
<SEC-HEADER>0001235847-09-000001.hdr.sgml : 20090313
<ACCEPTANCE-DATETIME>20090313110058
ACCESSION NUMBER:		0001235847-09-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090312
FILED AS OF DATE:		20090313
DATE AS OF CHANGE:		20090313

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MAHUSON WILLIAM E
		CENTRAL INDEX KEY:			0001235847

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27460
		FILM NUMBER:		09678096

	BUSINESS ADDRESS:	
		STREET 1:		205 INDIGO CREEK DR.
		CITY:			ROCHESTER
		STATE:			NY
		ZIP:			14626

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PERFORMANCE TECHNOLOGIES INC \DE\
		CENTRAL INDEX KEY:			0001003950
		STANDARD INDUSTRIAL CLASSIFICATION:	COMPUTER COMMUNICATIONS EQUIPMENT [3576]
		IRS NUMBER:				161158413
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		205 INDIGO CREEK DRIVE
		CITY:			ROCHESTER
		STATE:			NY
		ZIP:			14626
		BUSINESS PHONE:		5852560200

	MAIL ADDRESS:	
		STREET 1:		205 INDIGO CREEK DRIVE
		STREET 2:		205 INDIGO CREEK DRIVE
		CITY:			ROCHESTER
		STATE:			NY
		ZIP:			14626
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-03-12</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001003950</issuerCik>
        <issuerName>PERFORMANCE TECHNOLOGIES INC \DE\</issuerName>
        <issuerTradingSymbol>PTIX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001235847</rptOwnerCik>
            <rptOwnerName>MAHUSON WILLIAM E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1></rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity></rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Senior Corporate VP</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Non-Statutory Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.59</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2009-03-12</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>25000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.59</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2010-03-12</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2014-03-12</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock, $.01 par value</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>25000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>25000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Stock option granted under the Performance Technologies, Inc. 2003 Omnibus Plan in a transaction exempt under Section 16b-3. This option is exercisable in increments of 5,000 shares, 7,500 shares and 12,500 shares respectively on 3/12/10, 3/12/11 and 3/12/12.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>by:/s/William E. Mahuson</signatureName>
        <signatureDate>2009-03-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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