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  <xs:element id="on_DefinedBenefitPlanPercentageOfEmployeeContributionBasisForEmployerContribution" abstract="false" name="DefinedBenefitPlanPercentageOfEmployeeContributionBasisForEmployerContribution" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="on_DefinedBenefitPlanBenefitsPaidByCompany" abstract="false" name="DefinedBenefitPlanBenefitsPaidByCompany" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_DefinedBenefitPlanBenefitsPaidPlanAssets" abstract="false" name="DefinedBenefitPlanBenefitsPaidPlanAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_PlansWithUnderfundedOrNonFundedPBOAbstract" abstract="true" name="PlansWithUnderfundedOrNonFundedPBOAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="on_UnderfundedorNonFundedProjectedBenefitObligationInExcessofPlanAssetsProjectedBenefitObligation" abstract="false" name="UnderfundedorNonFundedProjectedBenefitObligationInExcessofPlanAssetsProjectedBenefitObligation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_UnderfundedOrNonFundedProjectedBenefitObligationInExcessOfPlanAssetsFairValueOfPlanAssets" abstract="false" name="UnderfundedOrNonFundedProjectedBenefitObligationInExcessOfPlanAssetsFairValueOfPlanAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_PlansWithUnderfundedOtNonFundedAccumulatedBenefitObligationAbstract" abstract="true" name="PlansWithUnderfundedOtNonFundedAccumulatedBenefitObligationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="on_UnderfundedOrNonFundedAccumulatedBenefitObligationInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation" abstract="false" name="UnderfundedOrNonFundedAccumulatedBenefitObligationInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_UnderfundedOrNonFundedAccumulatedBenefitObligationInExcessOfPlanAssetsAggregateFairValueOfPlanAssets" abstract="false" name="UnderfundedOrNonFundedAccumulatedBenefitObligationInExcessOfPlanAssetsAggregateFairValueOfPlanAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_AssetsForPlanBenefitsDefinedBenefitPlanCurrent" abstract="false" name="AssetsForPlanBenefitsDefinedBenefitPlanCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_AssetsForPlanBenefitsDefinedBenefitPlanNoncurrent" abstract="false" name="AssetsForPlanBenefitsDefinedBenefitPlanNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_CashMoneyMarketMember" abstract="true" name="CashMoneyMarketMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="on_InsuranceContractsMember" abstract="true" name="InsuranceContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="on_DefinedBenefitPlanExpectedFutureBenefitPaymentsTotal" abstract="false" name="DefinedBenefitPlanExpectedFutureBenefitPaymentsTotal" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_FairchildMember" abstract="true" name="FairchildMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="on_OutstandingGuaranteesAndLettersOfCredit" abstract="false" name="OutstandingGuaranteesAndLettersOfCredit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_GovernmentAssistanceRecapturePeriod" abstract="false" name="GovernmentAssistanceRecapturePeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="on_NonfinancialAssetsMember" abstract="true" name="NonfinancialAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="on_NoncashOrPartNoncashAcquisitionContingentConsideration" abstract="false" name="NoncashOrPartNoncashAcquisitionContingentConsideration" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_FinancialInstrumentsTable" abstract="true" name="FinancialInstrumentsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="on_FinancialInstrumentsLineItems" abstract="true" name="FinancialInstrumentsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="on_NotionalAmountOfForeignCurrencyDerivativePurchaseSaleAndContractsNet" abstract="false" name="NotionalAmountOfForeignCurrencyDerivativePurchaseSaleAndContractsNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_DeferredIncomeTaxExpenseBenefitContinuingOperations" abstract="false" name="DeferredIncomeTaxExpenseBenefitContinuingOperations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationInvestmentCreditExpirationAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationInvestmentCreditExpirationAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationCurrencyTranslationGainLossAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationCurrencyTranslationGainLossAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationSubpartFAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationSubpartFAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationNontaxableOrNondeductibleAbstract" abstract="true" name="EffectiveIncomeTaxRateReconciliationNontaxableOrNondeductibleAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExcessiveOfficersCompensationAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExcessiveOfficersCompensationAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationInvestmentCreditExpirationPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationInvestmentCreditExpirationPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationCurrencyTranslationGainLossPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationCurrencyTranslationGainLossPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationSubpartFPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationSubpartFPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationNontaxableOrNondeductiblePercentAbstract" abstract="true" name="EffectiveIncomeTaxRateReconciliationNontaxableOrNondeductiblePercentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExcessiveOfficersCompensationPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExcessiveOfficersCompensationPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationIncreaseDecreaseAbstract" abstract="true" name="EffectiveIncomeTaxRateReconciliationIncreaseDecreaseAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseCompensationExpensePercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseCompensationExpensePercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAuditSettlement" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAuditSettlement" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="on_IncomeTaxesTable" abstract="true" name="IncomeTaxesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="on_IncomeTaxesLineItems" abstract="true" name="IncomeTaxesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="on_IncreaseDecreaseInTaxRateAbstract" abstract="true" name="IncreaseDecreaseInTaxRateAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsBenefitAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsBenefitAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsBenefitPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsBenefitPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsExpenseAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsExpenseAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsExpensePercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsExpensePercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="on_UnrecognizedTaxBenefitsThatWouldImpactDeferredTaxes" abstract="false" name="UnrecognizedTaxBenefitsThatWouldImpactDeferredTaxes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_DeferredTaxAssetsOperatingLossAndTaxCreditCarryforwards" abstract="false" name="DeferredTaxAssetsOperatingLossAndTaxCreditCarryforwards" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_DeferredTaxAssetLeaseLiabilities" abstract="false" name="DeferredTaxAssetLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_DeferredTaxLiabilityTaxDeferredExpenseCompensationAndBenefitsPensions" abstract="false" name="DeferredTaxLiabilityTaxDeferredExpenseCompensationAndBenefitsPensions" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_DeferredTaxAssetsConvertibleDebt" abstract="false" name="DeferredTaxAssetsConvertibleDebt" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_DeferredTaxAssetsLiabilitiesGross" abstract="false" name="DeferredTaxAssetsLiabilitiesGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_NonCashDepositOnEquipment" abstract="false" name="NonCashDepositOnEquipment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_SECSchedule1209ValuationAllowancesAndReservesAdditionsChargeCreditToIncome" abstract="false" name="SECSchedule1209ValuationAllowancesAndReservesAdditionsChargeCreditToIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="on_ThadTrentMember" abstract="true" name="ThadTrentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
