<?xml version="1.0" encoding="us-ascii"?>
<!-- DFIN ActiveDisclosure(SM) XBRL Schema Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2021-02-27T16:35:46.6452223+00:00 -->
<!-- Version            : 5.0.1.571 -->
<!-- Package ID         : 635661e68964418c894060f615dd7df4 -->
<!-- Copyright (c) 2021 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<xsd:schema xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:dei="http://xbrl.sec.gov/dei/2020-01-31" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:us-types="http://fasb.org/us-types/2020-01-31" xmlns:stpr="http://xbrl.sec.gov/stpr/2018-01-31" xmlns:srt-types="http://fasb.org/srt-types/2020-01-31" xmlns:sic="http://xbrl.sec.gov/sic/2020-01-31" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:srt="http://fasb.org/srt/2020-01-31" xmlns:us-gaap="http://fasb.org/us-gaap/2020-01-31" xmlns:naics="http://xbrl.sec.gov/naics/2017-01-31" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:country="http://xbrl.sec.gov/country/2020-01-31" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:currency="http://xbrl.sec.gov/currency/2020-01-31" xmlns:bhe="http://bench.com/20201231" xmlns:exch="http://xbrl.sec.gov/exch/2020-01-31" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://bench.com/20201231" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/instance" />
  <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/linkbase" />
  <xsd:import schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" namespace="http://xbrl.org/2005/xbrldt" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd" namespace="http://xbrl.sec.gov/country/2020-01-31" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/currency/2020/currency-2020-01-31.xsd" namespace="http://xbrl.sec.gov/currency/2020-01-31" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd" namespace="http://xbrl.sec.gov/dei/2020-01-31" />
  <xsd:import schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/non-numeric" />
  <xsd:import schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/numeric" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/exch/2020/exch-2020-01-31.xsd" namespace="http://xbrl.sec.gov/exch/2020-01-31" />
  <xsd:import schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" />
  <xsd:import schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/role/negated" />
  <xsd:import schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/role/net" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd" namespace="http://xbrl.sec.gov/naics/2017-01-31" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/sic/2020/sic-2020-01-31.xsd" namespace="http://xbrl.sec.gov/sic/2020-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd" namespace="http://fasb.org/srt/2020-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/srt/2020/elts/srt-roles-2020-01-31.xsd" namespace="http://fasb.org/srt-roles/2020-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/srt/2020/elts/srt-types-2020-01-31.xsd" namespace="http://fasb.org/srt-types/2020-01-31" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd" namespace="http://xbrl.sec.gov/stpr/2018-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd" namespace="http://fasb.org/us-gaap/2020-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/us-gaap/2020/elts/us-roles-2020-01-31.xsd" namespace="http://fasb.org/us-roles/2020-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/us-gaap/2020/elts/us-types-2020-01-31.xsd" namespace="http://fasb.org/us-types/2020-01-31" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:roleType id="TemplateLink" roleURI="http://bench.com/20201231/role/TemplateLink" xmlns:link="http://www.xbrl.org/2003/linkbase">
        <link:definition>00000 - Document - Template Link</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="bhe-20201231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:title="Calculation Links, all" xlink:type="simple" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="bhe-20201231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:title="Definition Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="bhe-20201231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:title="Label Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="bhe-20201231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:title="Presentation Links, all" xlink:type="simple" />
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DocumentCover" id="Role_DocumentCover">
        <link:definition>100000 - Document - Cover</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/StatementConsolidatedBalanceSheets" id="Role_StatementConsolidatedBalanceSheets">
        <link:definition>100010 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/StatementConsolidatedBalanceSheetsParenthetical" id="Role_StatementConsolidatedBalanceSheetsParenthetical">
        <link:definition>100020 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/StatementConsolidatedStatementsOfIncome" id="Role_StatementConsolidatedStatementsOfIncome">
        <link:definition>100030 - Statement - Consolidated Statements of Income</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncome" id="Role_StatementConsolidatedStatementsOfComprehensiveIncome">
        <link:definition>100040 - Statement - Consolidated Statements of Comprehensive Income</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/StatementConsolidatedStatementsOfShareholdersEquity" id="Role_StatementConsolidatedStatementsOfShareholdersEquity">
        <link:definition>100050 - Statement - Consolidated Statements of Shareholders&apos; Equity</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/StatementConsolidatedStatementsOfCashFlows" id="Role_StatementConsolidatedStatementsOfCashFlows">
        <link:definition>100060 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPolicies" id="Role_DisclosureSummaryOfSignificantAccountingPolicies">
        <link:definition>100070 - Disclosure - Summary Of Significant Accounting Policies</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureAcquisition" id="Role_DisclosureAcquisition">
        <link:definition>100080 - Disclosure - Acquisition</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureInventories" id="Role_DisclosureInventories">
        <link:definition>100090 - Disclosure - Inventories</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosurePropertyPlantAndEquipment" id="Role_DisclosurePropertyPlantAndEquipment">
        <link:definition>100100 - Disclosure - Property, Plant And Equipment</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssets" id="Role_DisclosureGoodwillAndOtherIntangibleAssets">
        <link:definition>100110 - Disclosure - Goodwill And Other Intangible Assets</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureBorrowingFacilities" id="Role_DisclosureBorrowingFacilities">
        <link:definition>100120 - Disclosure - Borrowing Facilities</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureLeases" id="Role_DisclosureLeases">
        <link:definition>100130 - Disclosure - Leases</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureCommonStockAndStockBasedAwardsPlans" id="Role_DisclosureCommonStockAndStockBasedAwardsPlans">
        <link:definition>100140 - Disclosure - Common Stock and Stock-Based Awards Plans</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureIncomeTaxes" id="Role_DisclosureIncomeTaxes">
        <link:definition>100150 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureMajorCustomers" id="Role_DisclosureMajorCustomers">
        <link:definition>100160 - Disclosure - Major Customers</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureFinancialInstrumentsAndConcentrationOfCreditRisk" id="Role_DisclosureFinancialInstrumentsAndConcentrationOfCreditRisk">
        <link:definition>100170 - Disclosure - Financial Instruments and Concentration of Credit Risk</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureConcentrationsOfBusinessRisk" id="Role_DisclosureConcentrationsOfBusinessRisk">
        <link:definition>100180 - Disclosure - Concentrations Of Business Risk</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureAccountsReceivableSaleProgram" id="Role_DisclosureAccountsReceivableSaleProgram">
        <link:definition>100190 - Disclosure - Accounts Receivable Sale Program</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureSegmentAndGeographicInformation" id="Role_DisclosureSegmentAndGeographicInformation">
        <link:definition>100200 - Disclosure - Segment And Geographic Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureRevenue" id="Role_DisclosureRevenue">
        <link:definition>100210 - Disclosure - Revenue</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureEmployeeBenefitPlans" id="Role_DisclosureEmployeeBenefitPlans">
        <link:definition>100220 - Disclosure - Employee Benefit Plans</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureContingencies" id="Role_DisclosureContingencies">
        <link:definition>100230 - Disclosure - Contingencies</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureRestructuringCharges" id="Role_DisclosureRestructuringCharges">
        <link:definition>100240 - Disclosure - Restructuring Charges</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureRansomwareIncident" id="Role_DisclosureRansomwareIncident">
        <link:definition>100250 - Disclosure - Ransomware Incident</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureQuarterlyFinancialData" id="Role_DisclosureQuarterlyFinancialData">
        <link:definition>100260 - Disclosure - Quarterly Financial Data</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLoss" id="Role_DisclosureAccumulatedOtherComprehensiveLoss">
        <link:definition>100270 - Disclosure - Accumulated Other Comprehensive Loss</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureSupplementalCashFlowAndNonCashInformation" id="Role_DisclosureSupplementalCashFlowAndNonCashInformation">
        <link:definition>100280 - Disclosure - Supplemental Cash Flow And Non-Cash Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies" id="Role_DisclosureSummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>100290 - Disclosure - Summary Of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesTables" id="Role_DisclosureSummaryOfSignificantAccountingPoliciesTables">
        <link:definition>100300 - Disclosure - Summary Of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureInventoriesTables" id="Role_DisclosureInventoriesTables">
        <link:definition>100310 - Disclosure - Inventories (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosurePropertyPlantAndEquipmentTables" id="Role_DisclosurePropertyPlantAndEquipmentTables">
        <link:definition>100320 - Disclosure - Property, Plant And Equipment (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsTables" id="Role_DisclosureGoodwillAndOtherIntangibleAssetsTables">
        <link:definition>100330 - Disclosure - Goodwill And Other Intangible Assets (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureBorrowingFacilitiesTables" id="Role_DisclosureBorrowingFacilitiesTables">
        <link:definition>100340 - Disclosure - Borrowing Facilities (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureLeasesTables" id="Role_DisclosureLeasesTables">
        <link:definition>100350 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureCommonStockAndStockBasedAwardsPlansTables" id="Role_DisclosureCommonStockAndStockBasedAwardsPlansTables">
        <link:definition>100360 - Disclosure - Common Stock and Stock-Based Awards Plans (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureIncomeTaxesTables" id="Role_DisclosureIncomeTaxesTables">
        <link:definition>100370 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureMajorCustomersTables" id="Role_DisclosureMajorCustomersTables">
        <link:definition>100380 - Disclosure - Major Customers (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureSegmentAndGeographicInformationTables" id="Role_DisclosureSegmentAndGeographicInformationTables">
        <link:definition>100390 - Disclosure - Segment And Geographic Information (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureRevenueTables" id="Role_DisclosureRevenueTables">
        <link:definition>100400 - Disclosure - Revenue (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureRestructuringChargesTables" id="Role_DisclosureRestructuringChargesTables">
        <link:definition>100410 - Disclosure - Restructuring Charges (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureQuarterlyFinancialDataTables" id="Role_DisclosureQuarterlyFinancialDataTables">
        <link:definition>100420 - Disclosure - Quarterly Financial Data (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossTables" id="Role_DisclosureAccumulatedOtherComprehensiveLossTables">
        <link:definition>100430 - Disclosure - Accumulated Other Comprehensive Loss (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureSupplementalCashFlowAndNonCashInformationTables" id="Role_DisclosureSupplementalCashFlowAndNonCashInformationTables">
        <link:definition>100440 - Disclosure - Supplemental Cash Flow and Non-Cash Information (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesNarrativeDetails" id="Role_DisclosureSummaryOfSignificantAccountingPoliciesNarrativeDetails">
        <link:definition>100450 - Disclosure - Summary Of Significant Accounting Policies (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfAllowanceForDoubtfulAccountsDetails" id="Role_DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfAllowanceForDoubtfulAccountsDetails">
        <link:definition>100460 - Disclosure - Summary Of Significant Accounting Policies (Schedule Of Allowance For Doubtful Accounts) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfCalculationOfBasicAndDilutedEarningsPerShareDetails" id="Role_DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfCalculationOfBasicAndDilutedEarningsPerShareDetails">
        <link:definition>100470 - Disclosure - Summary Of Significant Accounting Policies (Schedule Of Calculation Of Basic And Diluted Earnings Per Share) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfUnrecognizedCompensationCostNonvestedAwardsDetails" id="Role_DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfUnrecognizedCompensationCostNonvestedAwardsDetails">
        <link:definition>100480 - Disclosure - Summary Of Significant Accounting Policies (Schedule Of Unrecognized Compensation Cost Nonvested Awards) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureAcquisitionNarrativeDetails" id="Role_DisclosureAcquisitionNarrativeDetails">
        <link:definition>100490 - Disclosure - Acquisition (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureInventoriesScheduleOfInventoryCostsDetails" id="Role_DisclosureInventoriesScheduleOfInventoryCostsDetails">
        <link:definition>100500 - Disclosure - Inventories (Schedule Of Inventory Costs) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosurePropertyPlantAndEquipmentScheduleOfPropertyPlantAndEquipmentDetails" id="Role_DisclosurePropertyPlantAndEquipmentScheduleOfPropertyPlantAndEquipmentDetails">
        <link:definition>100510 - Disclosure - Property, Plant And Equipment (Schedule Of Property, Plant And Equipment) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfGoodwillByReportableSegmentsDetails" id="Role_DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfGoodwillByReportableSegmentsDetails">
        <link:definition>100520 - Disclosure - Goodwill and Other Intangible Assets (Schedule of Goodwill by Reportable Segments) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsNarrativeDetails" id="Role_DisclosureGoodwillAndOtherIntangibleAssetsNarrativeDetails">
        <link:definition>100530 - Disclosure - Goodwill And Other Intangible Assets (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfOtherIntangibleAssetsDetails" id="Role_DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfOtherIntangibleAssetsDetails">
        <link:definition>100540 - Disclosure - Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfAmortizationExpenseDetails" id="Role_DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfAmortizationExpenseDetails">
        <link:definition>100550 - Disclosure - Goodwill And Other Intangible Assets (Schedule Of Amortization Expense) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfEstimatedFutureAmortizationExpenseDetails" id="Role_DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfEstimatedFutureAmortizationExpenseDetails">
        <link:definition>100560 - Disclosure - Goodwill And Other Intangible Assets (Schedule Of Estimated Future Amortization Expense) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureBorrowingFacilitiesLongTermDebtOutstandingDetails" id="Role_DisclosureBorrowingFacilitiesLongTermDebtOutstandingDetails">
        <link:definition>100570 - Disclosure - Borrowing Facilities - Long-term debt outstanding (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureBorrowingFacilitiesNarrativeDetails" id="Role_DisclosureBorrowingFacilitiesNarrativeDetails">
        <link:definition>100580 - Disclosure - Borrowing Facilities (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureBorrowingFacilitiesMaturitiesOfLongTermDebtAndCapitalLeaseObligationsDetails" id="Role_DisclosureBorrowingFacilitiesMaturitiesOfLongTermDebtAndCapitalLeaseObligationsDetails">
        <link:definition>100590 - Disclosure - Borrowing Facilities (Maturities of Long-Term Debt And Capital Lease Obligations) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureLeasesComponentsOfLeaseExpenseAndLeaseAssetsAndLiabilitiesDetails" id="Role_DisclosureLeasesComponentsOfLeaseExpenseAndLeaseAssetsAndLiabilitiesDetails">
        <link:definition>100600 - Disclosure - Leases - Components of lease expense, and lease assets and liabilities (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureLeasesFutureAnnualMinimumLeasePaymentsAndFinanceLeaseCommitmentsDetails" id="Role_DisclosureLeasesFutureAnnualMinimumLeasePaymentsAndFinanceLeaseCommitmentsDetails">
        <link:definition>100610 - Disclosure - Leases - Future annual minimum lease payments and finance lease commitments (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureLeasesFutureAnnualMinimumLeasePaymentsAndFinanceLeaseCommitmentsPresentValueOfLeaseLiabilitiesDetails" id="Role_DisclosureLeasesFutureAnnualMinimumLeasePaymentsAndFinanceLeaseCommitmentsPresentValueOfLeaseLiabilitiesDetails">
        <link:definition>100620 - Disclosure - Leases - Future annual minimum lease payments and finance lease commitments - Present value of lease liabilities (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureCommonStockAndStockBasedAwardsPlansDividendsAndShareRepurchaseAuthorizationNarrativeDetails" id="Role_DisclosureCommonStockAndStockBasedAwardsPlansDividendsAndShareRepurchaseAuthorizationNarrativeDetails">
        <link:definition>100630 - Disclosure - Common Stock and Stock-Based Awards Plans - Dividends and Share Repurchase Authorization (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureCommonStockAndStockBasedAwardsPlansStockBasedCompensationNarrativeDetails" id="Role_DisclosureCommonStockAndStockBasedAwardsPlansStockBasedCompensationNarrativeDetails">
        <link:definition>100640 - Disclosure - Common Stock and Stock-Based Awards Plans - Stock-Based Compensation (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureCommonStockAndStockBasedAwardsPlansSummaryOfStockOptionsDetails" id="Role_DisclosureCommonStockAndStockBasedAwardsPlansSummaryOfStockOptionsDetails">
        <link:definition>100650 - Disclosure - Common Stock and Stock-Based Awards Plans (Summary Of Stock Options) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureCommonStockAndStockBasedAwardsPlansSummaryOfStockBasedAwardsDetails" id="Role_DisclosureCommonStockAndStockBasedAwardsPlansSummaryOfStockBasedAwardsDetails">
        <link:definition>100660 - Disclosure - Common Stock and Stock-Based Awards Plans (Summary Of Stock-Based Awards) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureIncomeTaxesScheduleOfIncomeTaxExpenseBenefitDetails" id="Role_DisclosureIncomeTaxesScheduleOfIncomeTaxExpenseBenefitDetails">
        <link:definition>100670 - Disclosure - Income Taxes (Schedule Of Income Tax Expense (Benefit)) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureIncomeTaxesScheduleOfIncomeBeforeIncomeTaxesDetails" id="Role_DisclosureIncomeTaxesScheduleOfIncomeBeforeIncomeTaxesDetails">
        <link:definition>100680 - Disclosure - Income Taxes (Schedule Of Income Before Income Taxes) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureIncomeTaxesScheduleOfFederalStatutoryIncomeTaxRateToIncomeBeforeIncomeTaxDetails" id="Role_DisclosureIncomeTaxesScheduleOfFederalStatutoryIncomeTaxRateToIncomeBeforeIncomeTaxDetails">
        <link:definition>100690 - Disclosure - Income Taxes (Schedule Of Federal Statutory Income Tax Rate To Income Before Income Tax) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureIncomeTaxesNarrativeDetails" id="Role_DisclosureIncomeTaxesNarrativeDetails">
        <link:definition>100700 - Disclosure - Income Taxes (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureIncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetails" id="Role_DisclosureIncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetails">
        <link:definition>100710 - Disclosure - Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureIncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetails2" id="Role_DisclosureIncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetails2">
        <link:definition>100720 - Disclosure - Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details)2</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureIncomeTaxesScheduleOfTaxIncentivesDetails" id="Role_DisclosureIncomeTaxesScheduleOfTaxIncentivesDetails">
        <link:definition>100730 - Disclosure - Income Taxes (Schedule Of Tax Incentives) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureIncomeTaxesScheduleOfReconciliationOfUnrecognizedTaxBenefitsDetails" id="Role_DisclosureIncomeTaxesScheduleOfReconciliationOfUnrecognizedTaxBenefitsDetails">
        <link:definition>100740 - Disclosure - Income Taxes (Schedule Of Reconciliation Of Unrecognized Tax Benefits) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureMajorCustomersNarrativeDetails" id="Role_DisclosureMajorCustomersNarrativeDetails">
        <link:definition>100750 - Disclosure - Major Customers (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureMajorCustomersScheduleOfSalesToLargestCustomersDetails" id="Role_DisclosureMajorCustomersScheduleOfSalesToLargestCustomersDetails">
        <link:definition>100760 - Disclosure - Major Customers (Schedule Of Sales To Largest Customers) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureFinancialInstrumentsAndConcentrationOfCreditRiskNarrativeDetails" id="Role_DisclosureFinancialInstrumentsAndConcentrationOfCreditRiskNarrativeDetails">
        <link:definition>100770 - Disclosure - Financial Instruments and Concentration of Credit Risk - Narrative (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureAccountsReceivableSaleProgramNarrativeDetails" id="Role_DisclosureAccountsReceivableSaleProgramNarrativeDetails">
        <link:definition>100780 - Disclosure - Accounts Receivable Sale Program (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureSegmentAndGeographicInformationOperatingSegmentsDetails" id="Role_DisclosureSegmentAndGeographicInformationOperatingSegmentsDetails">
        <link:definition>100790 - Disclosure - Segment And Geographic Information (Operating Segments) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureSegmentAndGeographicInformationScheduleOfGeographicNetSalesAndLongLivedAssetsDetails" id="Role_DisclosureSegmentAndGeographicInformationScheduleOfGeographicNetSalesAndLongLivedAssetsDetails">
        <link:definition>100800 - Disclosure - Segment And Geographic Information (Schedule Of Geographic Net Sales And Long-Lived Assets) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureRevenueDisaggregationOfRevenueDetails" id="Role_DisclosureRevenueDisaggregationOfRevenueDetails">
        <link:definition>100810 - Disclosure - Revenue (Disaggregation of revenue) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureRevenueNarrativeDetails" id="Role_DisclosureRevenueNarrativeDetails">
        <link:definition>100820 - Disclosure - Revenue (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureRevenueScheduleOfChangesInContractAssetsDetails" id="Role_DisclosureRevenueScheduleOfChangesInContractAssetsDetails">
        <link:definition>100830 - Disclosure - Revenue (Schedule of Changes in Contract Assets) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureEmployeeBenefitPlansDetails" id="Role_DisclosureEmployeeBenefitPlansDetails">
        <link:definition>100840 - Disclosure - Employee Benefit Plans (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureRestructuringChargesScheduleOfAccruedRestructuringBalancesDetails" id="Role_DisclosureRestructuringChargesScheduleOfAccruedRestructuringBalancesDetails">
        <link:definition>100850 - Disclosure - Restructuring Charges (Schedule Of Accrued Restructuring Balances) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureRestructuringChargesScheduleOfComponentsOfRestructuringChargesDetails" id="Role_DisclosureRestructuringChargesScheduleOfComponentsOfRestructuringChargesDetails">
        <link:definition>100860 - Disclosure - Restructuring Charges (Schedule Of Components Of Restructuring Charges) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureRestructuringChargesNarrativeDetails" id="Role_DisclosureRestructuringChargesNarrativeDetails">
        <link:definition>100870 - Disclosure - Restructuring Charges (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureRansomwareIncidentNarrativeDetails" id="Role_DisclosureRansomwareIncidentNarrativeDetails">
        <link:definition>100880 - Disclosure - Ransomware incident (Narrative) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails" id="Role_DisclosureQuarterlyFinancialDataScheduleOfQuarterlyFinancialInformationDetails">
        <link:definition>100890 - Disclosure - Quarterly Financial Data (Schedule Of Quarterly Financial Information) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossScheduleOfAccumulatedOtherComprehensiveLossByComponentDetails" id="Role_DisclosureAccumulatedOtherComprehensiveLossScheduleOfAccumulatedOtherComprehensiveLossByComponentDetails">
        <link:definition>100900 - Disclosure - Accumulated Other Comprehensive Loss (Schedule Of Accumulated Other Comprehensive Loss By Component) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://bench.com/20201231/taxonomy/role/DisclosureSupplementalCashFlowAndNonCashInformationScheduleOfSupplementalCashFlowAndNonCashInformationDetails" id="Role_DisclosureSupplementalCashFlowAndNonCashInformationScheduleOfSupplementalCashFlowAndNonCashInformationDetails">
        <link:definition>100910 - Disclosure - Supplemental Cash Flow and Non-Cash Information (Schedule Of Supplemental Cash Flow and Non-Cash Information) (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element id="bhe_LesseeOperatingLeaseLiabilityPaymentsDueYearSixAndAfterYearSix" name="LesseeOperatingLeaseLiabilityPaymentsDueYearSixAndAfterYearSix" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="bhe_FinanceLeaseLiabilityPaymentsDueYearSixAndAfterYearSix" name="FinanceLeaseLiabilityPaymentsDueYearSixAndAfterYearSix" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="bhe_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActGlobalIntangibleLowTaxedIncomeAmount" name="EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActGlobalIntangibleLowTaxedIncomeAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="bhe_IncomeTaxReconciliationLossesInForeignJurisdictionsForWhichNoBenefitHasBeenProvided" name="IncomeTaxReconciliationLossesInForeignJurisdictionsForWhichNoBenefitHasBeenProvided" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="bhe_DeferredTaxAssetsLeasingArrangements" name="DeferredTaxAssetsLeasingArrangements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="bhe_DeferredTaxAssetsInterestRateSwapLiabilities" name="DeferredTaxAssetsInterestRateSwapLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="bhe_Deferredtaxliabilitiesforeigntaxes" name="Deferredtaxliabilitiesforeigntaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="bhe_FacilityLeaseObligationsBusinesseExitCosts" name="FacilityLeaseObligationsBusinesseExitCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="bhe_RestructuringChargesAndOtherCosts" name="RestructuringChargesAndOtherCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="bhe_RansomwareRelatedIncidentCostsNet" name="RansomwareRelatedIncidentCostsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="bhe_ProceedsFromBorrowingsUnderFinanceLeases" name="ProceedsFromBorrowingsUnderFinanceLeases" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="bhe_Majorcustomerstextblock" name="Majorcustomerstextblock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="bhe_MajorCustomersAbstract" name="MajorCustomersAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_FinancialInstrumentsAndConcentrationOfCreditRiskTextBlock" name="FinancialInstrumentsAndConcentrationOfCreditRiskTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="bhe_FinancialInstrumentsAndConcentrationOfCreditRiskAbstract" name="FinancialInstrumentsAndConcentrationOfCreditRiskAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_BusinessPolicyPolicyTextBlock" name="BusinessPolicyPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="bhe_LesseeOperatingAndFinanceLeaseLiabilityMaturityTableTextBlock" name="LesseeOperatingAndFinanceLeaseLiabilityMaturityTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="bhe_ScheduleOfReconciliationOfBeginningAndEndingAmountOfUnrecognizedTaxBenefitsTableTextBlock" name="ScheduleOfReconciliationOfBeginningAndEndingAmountOfUnrecognizedTaxBenefitsTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="bhe_SignificantAccountingPoliciesLineItems" name="SignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_SignificantAccountingPoliciesTable" name="SignificantAccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_EarningsPerShareReconciliationLineItems" name="EarningsPerShareReconciliationLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_EarningsPerShareReconciliationTable" name="EarningsPerShareReconciliationTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_RestrictedSharesAndRestrictedStockUnitsMember" name="RestrictedSharesAndRestrictedStockUnitsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_NonsignificantbusinessMember" name="NonsignificantbusinessMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_GoodwillAndOtherIntangibleAssetsLineItems" name="GoodwillAndOtherIntangibleAssetsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_GoodwillAndOtherIntangibleAssetsTable" name="GoodwillAndOtherIntangibleAssetsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_TermLoanFacilityMember" name="TermLoanFacilityMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_LineOfCreditFacilityTermPeriod" name="LineOfCreditFacilityTermPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="bhe_PossibleIncreaseToBorrowingCapacityOfCreditAgreement" name="PossibleIncreaseToBorrowingCapacityOfCreditAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="bhe_CreditAgreementMember" name="CreditAgreementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_BankOfAmericaCreditAgreementMember" name="BankOfAmericaCreditAgreementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_PercentageOfDirectForeignSubsidiariesVotingCapitalStockUsedToSecureCreditAgreement" name="PercentageOfDirectForeignSubsidiariesVotingCapitalStockUsedToSecureCreditAgreement" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="bhe_PercentageOfDomesticSubsidiariesStockUsedToSecureCreditAgreement" name="PercentageOfDomesticSubsidiariesStockUsedToSecureCreditAgreement" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="bhe_AcceleratedStockRepurchaseAgreementMember" name="AcceleratedStockRepurchaseAgreementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_EmployeeAwardsMember" name="EmployeeAwardsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_IncomeTaxesLineItems" name="IncomeTaxesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_IncomeTaxesTable" name="IncomeTaxesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_ResearchTaxCreditCarryforwardMember" name="ResearchTaxCreditCarryforwardMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_TaxCutsAndJobsActOf2017AccountingCompletionDate" name="TaxCutsAndJobsActOf2017AccountingCompletionDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="bhe_EffectOfTaxCutsAndJobsActAbstract" name="EffectOfTaxCutsAndJobsActAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_TaxCutsAndJobsActChangeInTaxRateIncomeTaxExpenseBenefit" name="TaxCutsAndJobsActChangeInTaxRateIncomeTaxExpenseBenefit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="bhe_Taxcreditcarryforwardexpirationyear" name="Taxcreditcarryforwardexpirationyear" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="bhe_Foreignoperatinglosswithindefinitecarryforward" name="Foreignoperatinglosswithindefinitecarryforward" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="bhe_Operatinglosscarryforwardsexpirationyear" name="Operatinglosscarryforwardsexpirationyear" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="bhe_UnrecognizedTaxBenefitsIncludingInterestAndPenalties" name="UnrecognizedTaxBenefitsIncludingInterestAndPenalties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="bhe_Percentageofrevenueaccountedbymajorcustomers" name="Percentageofrevenueaccountedbymajorcustomers" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="bhe_Numberoflargestcustomersaccountedforportionofrevenue" name="Numberoflargestcustomersaccountedforportionofrevenue" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="bhe_AppliedMaterialsIncMember" name="AppliedMaterialsIncMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_InternationalbusinessmachinescorporationmemberMember" name="InternationalbusinessmachinescorporationmemberMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_LargeCustomerAccountsReceivableMember" name="LargeCustomerAccountsReceivableMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_CustomerAccountsReceivableMember" name="CustomerAccountsReceivableMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_InterestRateSwapAgreementExpirationTerm" name="InterestRateSwapAgreementExpirationTerm" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="bhe_MaximumLimitAccountsReceivableSaleProgram" name="MaximumLimitAccountsReceivableSaleProgram" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="bhe_TradeAccountsReceivableSold" name="TradeAccountsReceivableSold" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="bhe_AmountReceivedFromTradeAccountsReceivableSoldToThirdParty" name="AmountReceivedFromTradeAccountsReceivableSoldToThirdParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="bhe_OtherRegionsMember" name="OtherRegionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_IndustrialsSectorMember" name="IndustrialsSectorMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_AerospaceAndDefenseSectorMember" name="AerospaceAndDefenseSectorMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_SemiCapSectorMember" name="SemiCapSectorMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_ComputingSectorMember" name="ComputingSectorMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_TelecommunicationsSectorMember" name="TelecommunicationsSectorMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_PercentageOfRevenue" name="PercentageOfRevenue" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="bhe_CustomerDepositsAndPrepaymentsOfInventoryMember" name="CustomerDepositsAndPrepaymentsOfInventoryMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_ContractualTimingOfPaymentsMember" name="ContractualTimingOfPaymentsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_ContractWithCustomerAssetRevenueRecognized" name="ContractWithCustomerAssetRevenueRecognized" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="bhe_UnitedstatesemployeesdefinedcontributionmemberMember" name="UnitedstatesemployeesdefinedcontributionmemberMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_ForeignpensionplansdefinedcontributionmemberMember" name="ForeignpensionplansdefinedcontributionmemberMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_OtherexitcostsMember" name="OtherexitcostsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_TwoThousandAndTwentyMember" name="TwoThousandAndTwentyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_TwoThousandAndNineteenMember" name="TwoThousandAndNineteenMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_TwoThousandAndEighteenMember" name="TwoThousandAndEighteenMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="bhe_TwothousandandseventeenMember" name="TwothousandandseventeenMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
</xsd:schema>
