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  <xs:element name="EntityWideInformationNetSalesToExternalCustomersByGeographicAreaAndByMajorProductLineAbstract" id="belfb_EntityWideInformationNetSalesToExternalCustomersByGeographicAreaAndByMajorProductLineAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="PercentageOfIdentifiableAssets" id="belfb_PercentageOfIdentifiableAssets" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="NumberOfCustomersRepresentingSalesInExcessOfTenPercent" id="belfb_NumberOfCustomersRepresentingSalesInExcessOfTenPercent" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="TwoCustomersMember" id="belfb_TwoCustomersMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
</xs:schema>