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        <link:definition>090700 - Disclosure - INVENTORIES (Details)</link:definition>
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  <xs:element name="MagneticsMember" id="belfb_MagneticsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
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  <xs:element name="TwoCustomersMember" id="belfb_TwoCustomersMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
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  <xs:element name="ScheduleOfNetBenefitCostsAmountRecognizedInBalanceSheetAndAccumulatedOtherComprehensiveIncomeTableTextBlock" id="belfb_ScheduleOfNetBenefitCostsAmountRecognizedInBalanceSheetAndAccumulatedOtherComprehensiveIncomeTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
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  <xs:element name="BusinessAcquisitionPurchasePriceAllocationDeferredTaxLiabilitiesCurrentAndNonCurrent" id="belfb_BusinessAcquisitionPurchasePriceAllocationDeferredTaxLiabilitiesCurrentAndNonCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="GigacomMember" id="belfb_GigacomMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CompensationExpenseEqualToGrantDateFairValueOfTheseRestrictedShares" id="belfb_CompensationExpenseEqualToGrantDateFairValueOfTheseRestrictedShares" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="ScheduleOfAmountsRecognizedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock" id="belfb_ScheduleOfAmountsRecognizedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
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  <xs:element name="EmployerMatchOfFirstOnePercentOfCompensationContributedByParticipants" id="belfb_EmployerMatchOfFirstOnePercentOfCompensationContributedByParticipants" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="EmployerMatchOfNextFivePercentCompensationContributedByParticipants" id="belfb_EmployerMatchOfNextFivePercentCompensationContributedByParticipants" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="DefinedContributionPlanMinimumEmployerContributionPercent" id="belfb_DefinedContributionPlanMinimumEmployerContributionPercent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="NormalRetirementAge" id="belfb_NormalRetirementAge" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="NumberOfYearsOfService" id="belfb_NumberOfYearsOfService" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="NumberOfYearsOfPlanParticipation" id="belfb_NumberOfYearsOfPlanParticipation" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="PercentageOfAverageBaseCompensationPayableAsNormalRetirementBenefitUnderPlan" id="belfb_PercentageOfAverageBaseCompensationPayableAsNormalRetirementBenefitUnderPlan" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="NumberOfConsecutiveCalendarYearsOfPlanParticipationToCalculateAverageBaseCompensation" id="belfb_NumberOfConsecutiveCalendarYearsOfPlanParticipationToCalculateAverageBaseCompensation" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="EarlyRetirementAge" id="belfb_EarlyRetirementAge" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="NumberOfMonthlyPaymentsUnderPlan" id="belfb_NumberOfMonthlyPaymentsUnderPlan" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="MinimumNumberOfMonthlyPaymentsEntitledToBeneficiaryInCaseParticipantDiesPriorToReceivingOneTwentyMonthlyPayments" id="belfb_MinimumNumberOfMonthlyPaymentsEntitledToBeneficiaryInCaseParticipantDiesPriorToReceivingOneTwentyMonthlyPayments" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="PeriodForWhichBeneficiaryIsEntitledToReceiveBenefit" id="belfb_PeriodForWhichBeneficiaryIsEntitledToReceiveBenefit" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="PercentageOfParticipantSAnnualBaseSalaryReceivedByBeneficiaryForOneYearFromDateOfDeath" id="belfb_PercentageOfParticipantSAnnualBaseSalaryReceivedByBeneficiaryForOneYearFromDateOfDeath" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="PeriodForWhichBeneficiaryWillReceiveHundredPercentAnnualBaseSalary" id="belfb_PeriodForWhichBeneficiaryWillReceiveHundredPercentAnnualBaseSalary" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="PercentageOfParticipantSAnnualBaseSalaryReceivedByBeneficiaryForFallowingFourYearsFromDateOfDeath" id="belfb_PercentageOfParticipantSAnnualBaseSalaryReceivedByBeneficiaryForFallowingFourYearsFromDateOfDeath" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="PeriodForWhichBeneficiaryWillReceiveFiftyPercentAnnualBaseSalary" id="belfb_PeriodForWhichBeneficiaryWillReceiveFiftyPercentAnnualBaseSalary" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="FairValueOfLifeInsurancePoliciesAndMarketableSecuritiesHeldInRabbiTrust" id="belfb_FairValueOfLifeInsurancePoliciesAndMarketableSecuritiesHeldInRabbiTrust" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="EquityCompensationPlanMember" id="belfb_EquityCompensationPlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="PercentageOfIncrementsEarnedForShareAwards" id="belfb_PercentageOfIncrementsEarnedForShareAwards" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="AmortizationPeriodForMarketValueOfCommonStockAwarded" id="belfb_AmortizationPeriodForMarketValueOfCommonStockAwarded" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
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  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageExercisePriceRollForward" id="belfb_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageExercisePriceRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
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  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageExercisePrice" id="belfb_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageExercisePrice" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
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  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageExercisePrice" id="belfb_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageExercisePrice" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualLife" id="belfb_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualLife" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="NumberOfShareholdersWithOwnershipInExcessOfTenPercent" id="belfb_NumberOfShareholdersWithOwnershipInExcessOfTenPercent" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="MinimumPercentageOfOutstandingCommonStockHeldByTwoShareholders" id="belfb_MinimumPercentageOfOutstandingCommonStockHeldByTwoShareholders" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="MinimumPercentageOfCommonStockNeedsToHeldByShareholdersHavingMoreThanTenPercentOfClassCommonStockAsPerClassBProtectionClause" id="belfb_MinimumPercentageOfCommonStockNeedsToHeldByShareholdersHavingMoreThanTenPercentOfClassCommonStockAsPerClassBProtectionClause" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="NumberOfDaysFromTriggerDateToPurchaseClassBCommonShares" id="belfb_NumberOfDaysFromTriggerDateToPurchaseClassBCommonShares" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="PercentageShareholdingOfClassBConsideredAsPerClassBProtectionClause" id="belfb_PercentageShareholdingOfClassBConsideredAsPerClassBProtectionClause" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="PercentageOfCommonStockHeldByShareholderOne" id="belfb_PercentageOfCommonStockHeldByShareholderOne" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="PercentageOfCommonStockHeldByShareholderTwo" id="belfb_PercentageOfCommonStockHeldByShareholderTwo" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="AccumulatedOtherComprehensiveIncomeLossTaxEffectAbstract" id="belfb_AccumulatedOtherComprehensiveIncomeLossTaxEffectAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentTaxEffect" id="belfb_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentTaxEffect" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="AccumulatedOtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTaxEffect" id="belfb_AccumulatedOtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTaxEffect" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="EquityInterestHeldByInvestee" id="belfb_EquityInterestHeldByInvestee" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
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  <xs:element name="LitigationChargesAfterTax" id="belfb_LitigationChargesAfterTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
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  <xs:element name="OutstandingPurchaseOrdersRelatedToRawMaterials" id="belfb_OutstandingPurchaseOrdersRelatedToRawMaterials" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="OutstandingPurchaseOrdersRelatedToCapitalExpenditures" id="belfb_OutstandingPurchaseOrdersRelatedToCapitalExpenditures" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="SynqorIncMember" id="belfb_SynqorIncMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="HaloElectronicsIncMember" id="belfb_HaloElectronicsIncMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="DamagesCoveredThroughIndemnificationAgreement" id="belfb_DamagesCoveredThroughIndemnificationAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="SupersedeasBondPostedToCourt" id="belfb_SupersedeasBondPostedToCourt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="PercentageOfRoyaltyPayableOnNetWorldwideSale" id="belfb_PercentageOfRoyaltyPayableOnNetWorldwideSale" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="PercentageOfRoyaltyReceivableOnNetWorldwideSale" id="belfb_PercentageOfRoyaltyReceivableOnNetWorldwideSale" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="PercentageOfParticipantContributionOne" id="belfb_PercentageOfParticipantContributionOne" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="PercentageOfParticipantContributionTwo" id="belfb_PercentageOfParticipantContributionTwo" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
</xs:schema>





