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  <xsd:element id="sitm_CashRestrictedStockUnitAwardMember" name="CashRestrictedStockUnitAwardMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="sitm_LiabilityBasedAwardsCashSettledMember" name="LiabilityBasedAwardsCashSettledMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="sitm_FiniteLivedIntangibleAssetsAmortizationExpenseYearFiveandAfterYearFive" name="FiniteLivedIntangibleAssetsAmortizationExpenseYearFiveandAfterYearFive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="sitm_CoronavirusDiseasePolicyTextBlock" name="CoronavirusDiseasePolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="sitm_EquityAwardAndLiabilityBasedAwardsEquitySettledMember" name="EquityAwardAndLiabilityBasedAwardsEquitySettledMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="sitm_SaleOfCommonStockPricePerShare" name="SaleOfCommonStockPricePerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="sitm_AccruedExpensesAndOtherCurrentLiabilities" name="AccruedExpensesAndOtherCurrentLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="sitm_SiTimeCorporationMember" name="SiTimeCorporationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
</xsd:schema>
