<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2020 Workiva-->
<!--r:caee3533-3dce-4b76-98e7-e2f6e88bb0d2,g:517ec416-af1e-4de5-a460-947df06e2d2c-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:form="http://www.formfactor.com/20200627" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.formfactor.com/20200627">
  <xs:import namespace="http://fasb.org/srt/2020-01-31" schemaLocation="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2020-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd"/>
  <xs:import namespace="http://www.w3.org/1999/xlink" schemaLocation="http://www.xbrl.org/2003/xlink-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/country/2020-01-31" schemaLocation="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/currency/2020-01-31" schemaLocation="https://xbrl.sec.gov/currency/2020/currency-2020-01-31.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2019-01-31" schemaLocation="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="form-20200627_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="form-20200627_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="form-20200627_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="form-20200627_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="CoverPage" roleURI="http://www.formfactor.com/role/CoverPage">
        <link:definition>0001001 - Document - Cover Page</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedBalanceSheets" roleURI="http://www.formfactor.com/role/CondensedConsolidatedBalanceSheets">
        <link:definition>1001002 - Statement - Condensed Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedBalanceSheetsParenthetical" roleURI="http://www.formfactor.com/role/CondensedConsolidatedBalanceSheetsParenthetical">
        <link:definition>1002003 - Statement - Condensed Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementsofIncome" roleURI="http://www.formfactor.com/role/CondensedConsolidatedStatementsofIncome">
        <link:definition>1003004 - Statement - Condensed Consolidated Statements of Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementsofComprehensiveIncome" roleURI="http://www.formfactor.com/role/CondensedConsolidatedStatementsofComprehensiveIncome">
        <link:definition>1004005 - Statement - Condensed Consolidated Statements of Comprehensive Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY" roleURI="http://www.formfactor.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY">
        <link:definition>1005006 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementsofCashFlows" roleURI="http://www.formfactor.com/role/CondensedConsolidatedStatementsofCashFlows">
        <link:definition>1006007 - Statement - Condensed Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisofPresentationandNewAccountingPronouncements" roleURI="http://www.formfactor.com/role/BasisofPresentationandNewAccountingPronouncements">
        <link:definition>2101101 - Disclosure - Basis of Presentation and New Accounting Pronouncements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisofPresentationandNewAccountingPronouncementsPolicies" roleURI="http://www.formfactor.com/role/BasisofPresentationandNewAccountingPronouncementsPolicies">
        <link:definition>2202201 - Disclosure - Basis of Presentation and New Accounting Pronouncements (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisofPresentationandNewAccountingPronouncementsAdditionalInformationDetails" roleURI="http://www.formfactor.com/role/BasisofPresentationandNewAccountingPronouncementsAdditionalInformationDetails">
        <link:definition>2403401 - Disclosure - Basis of Presentation and New Accounting Pronouncements - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisofPresentationandNewAccountingPronouncementsASU201618InformationDetails" roleURI="http://www.formfactor.com/role/BasisofPresentationandNewAccountingPronouncementsASU201618InformationDetails">
        <link:definition>2404402 - Disclosure - Basis of Presentation and New Accounting Pronouncements - ASU 2016-18 Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConcentrationofCreditandOtherRisks" roleURI="http://www.formfactor.com/role/ConcentrationofCreditandOtherRisks">
        <link:definition>2105102 - Disclosure - Concentration of Credit and Other Risks</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConcentrationofCreditandOtherRisksTables" roleURI="http://www.formfactor.com/role/ConcentrationofCreditandOtherRisksTables">
        <link:definition>2306301 - Disclosure - Concentration of Credit and Other Risks (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConcentrationofCreditandOtherRisksDetails" roleURI="http://www.formfactor.com/role/ConcentrationofCreditandOtherRisksDetails">
        <link:definition>2407403 - Disclosure - Concentration of Credit and Other Risks (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Inventories" roleURI="http://www.formfactor.com/role/Inventories">
        <link:definition>2108103 - Disclosure - Inventories</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesTables" roleURI="http://www.formfactor.com/role/InventoriesTables">
        <link:definition>2309302 - Disclosure - Inventories (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesDetails" roleURI="http://www.formfactor.com/role/InventoriesDetails">
        <link:definition>2410404 - Disclosure - Inventories (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Acquisition" roleURI="http://www.formfactor.com/role/Acquisition">
        <link:definition>2111104 - Disclosure - Acquisition</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionTables" roleURI="http://www.formfactor.com/role/AcquisitionTables">
        <link:definition>2312303 - Disclosure - Acquisition (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionAdditionalInformationDetails" roleURI="http://www.formfactor.com/role/AcquisitionAdditionalInformationDetails">
        <link:definition>2413405 - Disclosure - Acquisition - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionAssetsAcquiredandLiabilitiesAssumedDetails" roleURI="http://www.formfactor.com/role/AcquisitionAssetsAcquiredandLiabilitiesAssumedDetails">
        <link:definition>2414406 - Disclosure - Acquisition - Assets Acquired and Liabilities Assumed (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionIntangibleAssetsAcquiredDetails" roleURI="http://www.formfactor.com/role/AcquisitionIntangibleAssetsAcquiredDetails">
        <link:definition>2415407 - Disclosure - Acquisition - Intangible Assets Acquired (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssets" roleURI="http://www.formfactor.com/role/GoodwillandIntangibleAssets">
        <link:definition>2116105 - Disclosure - Goodwill and Intangible Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsTables" roleURI="http://www.formfactor.com/role/GoodwillandIntangibleAssetsTables">
        <link:definition>2317304 - Disclosure - Goodwill and Intangible Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsGoodwillDetails" roleURI="http://www.formfactor.com/role/GoodwillandIntangibleAssetsGoodwillDetails">
        <link:definition>2418408 - Disclosure - Goodwill and Intangible Assets - Goodwill (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsIntangibleAssetsDetails" roleURI="http://www.formfactor.com/role/GoodwillandIntangibleAssetsIntangibleAssetsDetails">
        <link:definition>2419409 - Disclosure - Goodwill and Intangible Assets - Intangible Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsAmortizationExpenseDetails" roleURI="http://www.formfactor.com/role/GoodwillandIntangibleAssetsAmortizationExpenseDetails">
        <link:definition>2420410 - Disclosure - Goodwill and Intangible Assets - Amortization Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Debt" roleURI="http://www.formfactor.com/role/Debt">
        <link:definition>2121106 - Disclosure - Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtTables" roleURI="http://www.formfactor.com/role/DebtTables">
        <link:definition>2322305 - Disclosure - Debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtScheduleofDebtDetails" roleURI="http://www.formfactor.com/role/DebtScheduleofDebtDetails">
        <link:definition>2423411 - Disclosure - Debt - Schedule of Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtMaturityScheduleDetails" roleURI="http://www.formfactor.com/role/DebtMaturityScheduleDetails">
        <link:definition>2424412 - Disclosure - Debt - Maturity Schedule (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtMaturityScheduleDetails_1" roleURI="http://www.formfactor.com/role/DebtMaturityScheduleDetails_1">
        <link:definition>2424412 - Disclosure - Debt - Maturity Schedule (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtCMITermLoanDetails" roleURI="http://www.formfactor.com/role/DebtCMITermLoanDetails">
        <link:definition>2425413 - Disclosure - Debt - CMI Term Loan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtFRTTermLoanDetails" roleURI="http://www.formfactor.com/role/DebtFRTTermLoanDetails">
        <link:definition>2426414 - Disclosure - Debt - FRT Term Loan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtBuildingTermLoanDetails" roleURI="http://www.formfactor.com/role/DebtBuildingTermLoanDetails">
        <link:definition>2427415 - Disclosure - Debt - Building Term Loan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedLiabilities" roleURI="http://www.formfactor.com/role/AccruedLiabilities">
        <link:definition>2128107 - Disclosure - Accrued Liabilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedLiabilitiesTables" roleURI="http://www.formfactor.com/role/AccruedLiabilitiesTables">
        <link:definition>2329306 - Disclosure - Accrued Liabilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedLiabilitiesDetails" roleURI="http://www.formfactor.com/role/AccruedLiabilitiesDetails">
        <link:definition>2430416 - Disclosure - Accrued Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueandDerivativeInstruments" roleURI="http://www.formfactor.com/role/FairValueandDerivativeInstruments">
        <link:definition>2131108 - Disclosure - Fair Value and Derivative Instruments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueandDerivativeInstrumentsTables" roleURI="http://www.formfactor.com/role/FairValueandDerivativeInstrumentsTables">
        <link:definition>2332307 - Disclosure - Fair Value and Derivative Instruments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueandDerivativeInstrumentsFairValueAssetsMeasuredonRecurringBasisDetails" roleURI="http://www.formfactor.com/role/FairValueandDerivativeInstrumentsFairValueAssetsMeasuredonRecurringBasisDetails">
        <link:definition>2433417 - Disclosure - Fair Value and Derivative Instruments - Fair Value Assets Measured on Recurring Basis (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueandDerivativeInstrumentsAdditionalInformationDetails" roleURI="http://www.formfactor.com/role/FairValueandDerivativeInstrumentsAdditionalInformationDetails">
        <link:definition>2434418 - Disclosure - Fair Value and Derivative Instruments - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueandDerivativeInstrumentsImpactofCashFlowHedgesandDerivativesDetails" roleURI="http://www.formfactor.com/role/FairValueandDerivativeInstrumentsImpactofCashFlowHedgesandDerivativesDetails">
        <link:definition>2435419 - Disclosure - Fair Value and Derivative Instruments - Impact of Cash Flow Hedges and Derivatives (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueandDerivativeInstrumentsForeignCurrencyForwardContractsDetails" roleURI="http://www.formfactor.com/role/FairValueandDerivativeInstrumentsForeignCurrencyForwardContractsDetails">
        <link:definition>2436420 - Disclosure - Fair Value and Derivative Instruments - Foreign Currency Forward Contracts (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueandDerivativeInstrumentsGainsandLossesRelatedtoNondesignatedDerivativeInstrumentsDetails" roleURI="http://www.formfactor.com/role/FairValueandDerivativeInstrumentsGainsandLossesRelatedtoNondesignatedDerivativeInstrumentsDetails">
        <link:definition>2437421 - Disclosure - Fair Value and Derivative Instruments - Gains and Losses Related to Non-designated Derivative Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueandDerivativeInstrumentsAssetsMeasuredatFairValueonaNonRecurringBasisDetails" roleURI="http://www.formfactor.com/role/FairValueandDerivativeInstrumentsAssetsMeasuredatFairValueonaNonRecurringBasisDetails">
        <link:definition>2438422 - Disclosure - Fair Value and Derivative Instruments - Assets Measured at Fair Value on a Non-Recurring Basis (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueandDerivativeInstrumentsImpactofForeignExchangeDerivattiveContractsDesignatedasCashFlowHedgesDetails" roleURI="http://www.formfactor.com/role/FairValueandDerivativeInstrumentsImpactofForeignExchangeDerivattiveContractsDesignatedasCashFlowHedgesDetails">
        <link:definition>2439423 - Disclosure - Fair Value and Derivative Instruments - Impact of Foreign Exchange Derivattive Contracts Designated as Cash Flow Hedges (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Warranty" roleURI="http://www.formfactor.com/role/Warranty">
        <link:definition>2140109 - Disclosure - Warranty</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="WarrantyTables" roleURI="http://www.formfactor.com/role/WarrantyTables">
        <link:definition>2341308 - Disclosure - Warranty (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="WarrantyDetails" roleURI="http://www.formfactor.com/role/WarrantyDetails">
        <link:definition>2442424 - Disclosure - Warranty (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyPlantandEquipmentnet" roleURI="http://www.formfactor.com/role/PropertyPlantandEquipmentnet">
        <link:definition>2143110 - Disclosure - Property, Plant, and Equipment, net</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyPlantandEquipmentnetTables" roleURI="http://www.formfactor.com/role/PropertyPlantandEquipmentnetTables">
        <link:definition>2344309 - Disclosure - Property, Plant, and Equipment, net (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyPlantandEquipmentnetDetails" roleURI="http://www.formfactor.com/role/PropertyPlantandEquipmentnetDetails">
        <link:definition>2445425 - Disclosure - Property, Plant, and Equipment, net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityandStockBasedCompensation" roleURI="http://www.formfactor.com/role/StockholdersEquityandStockBasedCompensation">
        <link:definition>2146111 - Disclosure - Stockholders&#8217; Equity and Stock-Based Compensation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityandStockBasedCompensationTables" roleURI="http://www.formfactor.com/role/StockholdersEquityandStockBasedCompensationTables">
        <link:definition>2347310 - Disclosure - Stockholders&#8217; Equity and Stock-Based Compensation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityandStockBasedCompensationAdditionalInformationDetails" roleURI="http://www.formfactor.com/role/StockholdersEquityandStockBasedCompensationAdditionalInformationDetails">
        <link:definition>2448426 - Disclosure - Stockholders&#8217; Equity and Stock-Based Compensation - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityandStockBasedCompensationRestrictedStockUnitActivityDetails" roleURI="http://www.formfactor.com/role/StockholdersEquityandStockBasedCompensationRestrictedStockUnitActivityDetails">
        <link:definition>2449427 - Disclosure - Stockholders&#8217; Equity and Stock-Based Compensation - Restricted Stock Unit Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityandStockBasedCompensationStockOptionActivityDetails" roleURI="http://www.formfactor.com/role/StockholdersEquityandStockBasedCompensationStockOptionActivityDetails">
        <link:definition>2450428 - Disclosure - Stockholders&#8217; Equity and Stock-Based Compensation - Stock Option Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityandStockBasedCompensationESPPActivityDetails" roleURI="http://www.formfactor.com/role/StockholdersEquityandStockBasedCompensationESPPActivityDetails">
        <link:definition>2451429 - Disclosure - Stockholders&#8217; Equity and Stock-Based Compensation - ESPP Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityandStockBasedCompensationStockBasedCompensationDetails" roleURI="http://www.formfactor.com/role/StockholdersEquityandStockBasedCompensationStockBasedCompensationDetails">
        <link:definition>2452430 - Disclosure - Stockholders&#8217; Equity and Stock-Based Compensation - Stock-Based Compensation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityandStockBasedCompensationUnrecognizedCompensationCostsDetails" roleURI="http://www.formfactor.com/role/StockholdersEquityandStockBasedCompensationUnrecognizedCompensationCostsDetails">
        <link:definition>2453431 - Disclosure - Stockholders&#8217; Equity and Stock-Based Compensation - Unrecognized Compensation Costs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomeperShare" roleURI="http://www.formfactor.com/role/NetIncomeperShare">
        <link:definition>2154112 - Disclosure - Net Income per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomeperShareTables" roleURI="http://www.formfactor.com/role/NetIncomeperShareTables">
        <link:definition>2355311 - Disclosure - Net Income per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomeperShareDetails" roleURI="http://www.formfactor.com/role/NetIncomeperShareDetails">
        <link:definition>2456432 - Disclosure - Net Income per Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingencies" roleURI="http://www.formfactor.com/role/CommitmentsandContingencies">
        <link:definition>2157113 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Leases" roleURI="http://www.formfactor.com/role/Leases">
        <link:definition>2158114 - Disclosure - Leases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesTables" roleURI="http://www.formfactor.com/role/LeasesTables">
        <link:definition>2359312 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesNarrativeDetails" roleURI="http://www.formfactor.com/role/LeasesNarrativeDetails">
        <link:definition>2460433 - Disclosure - Leases - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesComponentsofLeaseExpenseDetails" roleURI="http://www.formfactor.com/role/LeasesComponentsofLeaseExpenseDetails">
        <link:definition>2461434 - Disclosure - Leases - Components of Lease Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofFutureMinimumPaymentsUnderLeasesDetails" roleURI="http://www.formfactor.com/role/LeasesScheduleofFutureMinimumPaymentsUnderLeasesDetails">
        <link:definition>2462435 - Disclosure - Leases - Schedule of Future Minimum Payments Under Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofFutureMinimumPaymentsUnderLeasesDetails_1" roleURI="http://www.formfactor.com/role/LeasesScheduleofFutureMinimumPaymentsUnderLeasesDetails_1">
        <link:definition>2462435 - Disclosure - Leases - Schedule of Future Minimum Payments Under Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Revenue" roleURI="http://www.formfactor.com/role/Revenue">
        <link:definition>2163115 - Disclosure - Revenue</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueDetails" roleURI="http://www.formfactor.com/role/RevenueDetails">
        <link:definition>2464436 - Disclosure - Revenue (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperatingSegmentsandEnterpriseWideInformation" roleURI="http://www.formfactor.com/role/OperatingSegmentsandEnterpriseWideInformation">
        <link:definition>2165116 - Disclosure - Operating Segments and Enterprise-Wide Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperatingSegmentsandEnterpriseWideInformationTables" roleURI="http://www.formfactor.com/role/OperatingSegmentsandEnterpriseWideInformationTables">
        <link:definition>2366313 - Disclosure - Operating Segments and Enterprise-Wide Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperatingSegmentsandEnterpriseWideInformationAdditionalInformationDetails" roleURI="http://www.formfactor.com/role/OperatingSegmentsandEnterpriseWideInformationAdditionalInformationDetails">
        <link:definition>2467437 - Disclosure - Operating Segments and Enterprise-Wide Information - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperatingSegmentsandEnterpriseWideInformationOperatingResultsbySegmentDetails" roleURI="http://www.formfactor.com/role/OperatingSegmentsandEnterpriseWideInformationOperatingResultsbySegmentDetails">
        <link:definition>2468438 - Disclosure - Operating Segments and Enterprise-Wide Information - Operating Results by Segment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperatingSegmentsandEnterpriseWideInformationRevenuebySegmentRecognitionTypeandGeographicAreaDetails" roleURI="http://www.formfactor.com/role/OperatingSegmentsandEnterpriseWideInformationRevenuebySegmentRecognitionTypeandGeographicAreaDetails">
        <link:definition>2469439 - Disclosure - Operating Segments and Enterprise-Wide Information - Revenue by Segment, Recognition Type, and Geographic Area (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventNotes" roleURI="http://www.formfactor.com/role/SubsequentEventNotes">
        <link:definition>2170117 - Disclosure - Subsequent Event (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventDetails" roleURI="http://www.formfactor.com/role/SubsequentEventDetails">
        <link:definition>2471440 - Disclosure - Subsequent Event (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="form_ProbeCardsSegmentMember" abstract="true" name="ProbeCardsSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_LongTermDebtInterestYearOne" abstract="false" name="LongTermDebtInterestYearOne" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_CMITermLoanMember" abstract="true" name="CMITermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_LongTermDebtPrincipalAndInterestYearTwo" abstract="false" name="LongTermDebtPrincipalAndInterestYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_SystemsSegmentMember" abstract="true" name="SystemsSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_LongTermDebtInterestAfterYearFour" abstract="false" name="LongTermDebtInterestAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_OperatingLeaseRightOfUseAssetAmortization" abstract="false" name="OperatingLeaseRightOfUseAssetAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_MajorCustomer1Member" abstract="true" name="MajorCustomer1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_LongTermDebtPrincipalAndInterestYearThree" abstract="false" name="LongTermDebtPrincipalAndInterestYearThree" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_LongTermDebtInterestYearFour" abstract="false" name="LongTermDebtInterestYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_LongTermDebtPrincipalAndInterestYearOne" abstract="false" name="LongTermDebtPrincipalAndInterestYearOne" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_LongTermDebtInterestDue" abstract="false" name="LongTermDebtInterestDue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_MicronMember" abstract="true" name="MicronMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_PropertyPlantAndEquipmentNetExcludesConstructionInProgress" abstract="false" name="PropertyPlantAndEquipmentNetExcludesConstructionInProgress" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_SystemsProductGroupMember" abstract="true" name="SystemsProductGroupMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_MajorCustomer2Member" abstract="true" name="MajorCustomer2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_LongTermDebtPrincipalAndInterestYearFour" abstract="false" name="LongTermDebtPrincipalAndInterestYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_DebtInstrumentInterestPaymentTerm" abstract="false" name="DebtInstrumentInterestPaymentTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="form_LongTermLineOfCreditQuarterlyRepaymentAmount" abstract="false" name="LongTermLineOfCreditQuarterlyRepaymentAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_LongTermDebtPrincipalAndInterestPrincipalAndInterest" abstract="false" name="LongTermDebtPrincipalAndInterestPrincipalAndInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_PerformanceRestrictedStockUnitsMember" abstract="true" name="PerformanceRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_ExistingDevelopedTechnologiesMember" abstract="true" name="ExistingDevelopedTechnologiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_FRTMember" abstract="true" name="FRTMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_IntelMember" abstract="true" name="IntelMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_GrossMarginPercent" abstract="false" name="GrossMarginPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="form_LongTermDebtInterestYearTwo" abstract="false" name="LongTermDebtInterestYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_EuroInterbankOfferedRateMember" abstract="true" name="EuroInterbankOfferedRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFivePercentage" abstract="false" name="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFivePercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="form_RestOfTheWorldMember" abstract="true" name="RestOfTheWorldMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_ContingentConsiderationCalculationAmountMultipleOfEBIT" abstract="false" name="ContingentConsiderationCalculationAmountMultipleOfEBIT" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="form_LongTermDebtMaturityAfterYearFour" abstract="false" name="LongTermDebtMaturityAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiabilityNet" abstract="false" name="BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiabilityNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThreePercentage" abstract="false" name="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThreePercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="form_FRTTermLoanMember" abstract="true" name="FRTTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_ChangeInCapitalExpendituresIncurredButNotYetPaid" abstract="false" name="ChangeInCapitalExpendituresIncurredButNotYetPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_LongTermDebtPrincipalAndInterestAfterYearFour" abstract="false" name="LongTermDebtPrincipalAndInterestAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_FoundryLogicProductGroupMember" abstract="true" name="FoundryLogicProductGroupMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_LongTermDebtPrincipalAndInterestRemainderOfFiscalYear" abstract="false" name="LongTermDebtPrincipalAndInterestRemainderOfFiscalYear" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_DRAMProductGroupMember" abstract="true" name="DRAMProductGroupMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_SamsungMember" abstract="true" name="SamsungMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_LongTermDebtInterestYearThree" abstract="false" name="LongTermDebtInterestYearThree" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFourPercentage" abstract="false" name="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFourPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="form_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonthsPercentage" abstract="false" name="LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonthsPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="form_ContractWithCustomerLiabilityExpectedToBeRecognized" abstract="false" name="ContractWithCustomerLiabilityExpectedToBeRecognized" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="form_WeightedAveragePerShareDiscountFromFairValueFromDateOfIssuanceCommonStock" abstract="false" name="WeightedAveragePerShareDiscountFromFairValueFromDateOfIssuanceCommonStock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:perShareItemType"/>
  <xs:element id="form_BuildingTermLoanMember" abstract="true" name="BuildingTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_FlashProductGroupMember" abstract="true" name="FlashProductGroupMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_EquityIncentivePlanMember" abstract="true" name="EquityIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="form_LongTermDebtInterestRemainderOfFiscalYear" abstract="false" name="LongTermDebtInterestRemainderOfFiscalYear" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="form_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwoPercentage" abstract="false" name="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwoPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="form_MajorCustomer3Member" abstract="true" name="MajorCustomer3Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
</xs:schema>
