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  <xs:element id="klic_StockRepurchaseProgramAuthorizedAmountAdditionalAmount" abstract="false" name="StockRepurchaseProgramAuthorizedAmountAdditionalAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_RelativeTSRPerformanceShareUnitsMember" abstract="true" name="RelativeTSRPerformanceShareUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="klic_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" abstract="false" name="FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_PeriodOfWarrantyForManufacturingDefects" abstract="false" name="PeriodOfWarrantyForManufacturingDefects" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="klic_CashUnrealizedGains" abstract="false" name="CashUnrealizedGains" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_IncreaseDecreaseInAccountsPayableAccruedExpensesAndOtherLiabilities" abstract="false" name="IncreaseDecreaseInAccountsPayableAccruedExpensesAndOtherLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_HuatianTechnologyGroupMember" abstract="true" name="HuatianTechnologyGroupMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="klic_GoodwillCumulativeImpairment" abstract="false" name="GoodwillCumulativeImpairment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_LEDMember" abstract="true" name="LEDMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="klic_AvailableforsaleSecuritiesShorttermInvestmentsFairValueDisclosure" abstract="false" name="AvailableforsaleSecuritiesShorttermInvestmentsFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_InventoryPurchaseObligationFutureMinimumPaymentsDueInFiveYears" abstract="false" name="InventoryPurchaseObligationFutureMinimumPaymentsDueInFiveYears" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_CashCashEquivalentsRestrictedCashRestrictedCashEquivalentsandShortTermInvestmentsFairValueDisclosure" abstract="false" name="CashCashEquivalentsRestrictedCashRestrictedCashEquivalentsandShortTermInvestmentsFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_RelativeTotalShareholderReturnAverageStockPriceCalculationPeriod" abstract="false" name="RelativeTotalShareholderReturnAverageStockPriceCalculationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="klic_InventoryPurchaseObligationFutureMinimumPaymentsDueInThreeYears" abstract="false" name="InventoryPurchaseObligationFutureMinimumPaymentsDueInThreeYears" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_AutomotiveandIndustrialMember" abstract="true" name="AutomotiveandIndustrialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="klic_ScheduleOfCustomerConcentrationOnAccountsReceivableTableTextBlock" abstract="false" name="ScheduleOfCustomerConcentrationOnAccountsReceivableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="klic_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesAndInventoryPurchasesTableTextBlock" abstract="false" name="ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesAndInventoryPurchasesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="klic_EquipmentAndSoftwareGross" abstract="false" name="EquipmentAndSoftwareGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_AccruedLiabilitiesForCommissionAndProfessionalFeesCurrent" abstract="false" name="AccruedLiabilitiesForCommissionAndProfessionalFeesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_InventoryPurchaseObligationFutureMinimumPaymentsDue" abstract="false" name="InventoryPurchaseObligationFutureMinimumPaymentsDue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_CorporateExpensesMember" abstract="true" name="CorporateExpensesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="klic_InventoryPurchaseObligationFutureMinimumPaymentsDueInFourYears" abstract="false" name="InventoryPurchaseObligationFutureMinimumPaymentsDueInFourYears" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_ComprehensiveIncomeLossForeignCurrencyTransactionandTranslationandPensionandOtherPostRetirementBenefitsNetofTaxPortionAttributabletoParent" abstract="false" name="ComprehensiveIncomeLossForeignCurrencyTransactionandTranslationandPensionandOtherPostRetirementBenefitsNetofTaxPortionAttributabletoParent" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_OmnibusIncentivePlanMember" abstract="true" name="OmnibusIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="klic_CashUnrealizedLosses" abstract="false" name="CashUnrealizedLosses" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_CashEquivalentsGrossUnrealizedGain" abstract="false" name="CashEquivalentsGrossUnrealizedGain" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_BallBondingEquipmentSegmentMember" abstract="true" name="BallBondingEquipmentSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="klic_IncreaseDecreaseDueToInventoryValuation" abstract="false" name="IncreaseDecreaseDueToInventoryValuation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_EarningsPerShareDilutedAdjustment" abstract="false" name="EarningsPerShareDilutedAdjustment" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="klic_ScheduleOfIntangibleAssetsTable" abstract="true" name="ScheduleOfIntangibleAssetsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="klic_AvailableforsaleSecuritiesShorttermInvestmentsGrossUnrealizedGain" abstract="false" name="AvailableforsaleSecuritiesShorttermInvestmentsGrossUnrealizedGain" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_CashandCashEquivalentsAmortizedCost" abstract="false" name="CashandCashEquivalentsAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="klic_OperatingRightOfUseAssetsMember" abstract="true" name="OperatingRightOfUseAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="klic_CustomerAxis" abstract="true" name="CustomerAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="klic_AccruedExpensesAndOtherCurrentLiabilitiesMember" abstract="true" name="AccruedExpensesAndOtherCurrentLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
</xs:schema>
