<?xml version="1.0" encoding="US-ASCII"?>
<!-- Generated by Broadridge Transform (tm) - http://www.broadridge.com -->
<!-- Created: Thu Aug 27 10:55:11 UTC 2026 -->
<xs:schema elementFormDefault="qualified" targetNamespace="http://www.franklintempletondatasources.com/20260630" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:us-types="http://fasb.org/us-types/2026" xmlns:tdif="http://www.franklintempletondatasources.com/20260630" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:dtr="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:xbrli="http://www.xbrl.org/2003/instance">
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xlink:type="simple" xlink:href="tdif-20260630_lab.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef"/>
      <link:linkbaseRef xlink:type="simple" xlink:href="tdif-20260630_pre.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef"/>
    </xs:appinfo>
  </xs:annotation>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/cef/2026" schemaLocation="https://xbrl.sec.gov/cef/2026/cef-2026.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/cef-pre/2026" schemaLocation="https://xbrl.sec.gov/cef/2026/cef-2026_pre.xsd"/>
<!-- [WMV7][jwnqge9HJZABOZtLZ2Zh/yCTBAhUAiZQX5kDyMyqEWCfmY/WNI9PfAuUFhzdpkue46BaWYvh7ONH7Xo9IYLQuuSahNJuXEzYjGGdDByPhyum7xUo570IQviu+VSWyHCR5kOu3SLNGEGrJsH53DNIKMgxIgHurUGrDXcBDR2UZ1fsPaxSdCBHN/PXpaG+P9XWEHVKTuzGSJb73lb5ZQilaRSzipMycmQMxLSkJ26vefPEJzuho12dVoX3p72yNQgZ0Xm4ThlLJLmC/wvT3NBsFINALot3MYVnxJatpdTOqdUDoMUQ8S6/hUC61HxD6oxTNlUv49GUuTvIT9PBiTgciyjsoEiC9EuRVKfrh/52DnNI4AInOnlHzHD9JzbO] CSR-->
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
</xs:schema>