<SEC-DOCUMENT>0001971857-24-000543.txt : 20240717
<SEC-HEADER>0001971857-24-000543.hdr.sgml : 20240717
<ACCEPTANCE-DATETIME>20240717162350
ACCESSION NUMBER:		0001971857-24-000543
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20240717
DATE AS OF CHANGE:		20240717

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LITTELFUSE INC /DE
		CENTRAL INDEX KEY:			0000889331
		STANDARD INDUSTRIAL CLASSIFICATION:	SWITCHGEAR & SWITCHBOARD APPARATUS [3613]
		ORGANIZATION NAME:           	04 Manufacturing
		IRS NUMBER:				363795742
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1228

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	000-20388
		FILM NUMBER:		241122517

	BUSINESS ADDRESS:	
		STREET 1:		8755 WEST HIGGINS ROAD
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60631
		BUSINESS PHONE:		773-628-1000

	MAIL ADDRESS:	
		STREET 1:		8755 WEST HIGGINS ROAD
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60631

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HEINZMANN DAVID W
		CENTRAL INDEX KEY:			0001279765
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		8755 WEST HIGGINS ROAD
		STREET 2:		SUITE 500
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60631
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001279765</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000889331</issuerCik>
      <issuerName>LITTELFUSE INC /DE</issuerName>
      <secFileNumber>000-20388</secFileNumber>
      <issuerAddress>
        <com:street1>8755 WEST HIGGINS ROAD</com:street1>
        <com:city>CHICAGO</com:city>
        <com:stateOrCountry>IL</com:stateOrCountry>
        <com:zipCode>60631</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>773-628-1000</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>HEINZMANN DAVID W</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Merrill</name>
        <address>
          <com:street1>8890 Lyra Dr 5 the Flr</com:street1>
          <com:city>Columbus</com:city>
          <com:stateOrCountry>OH</com:stateOrCountry>
          <com:zipCode>43240</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>300</noOfUnitsSold>
      <aggregateMarketValue>81951.00</aggregateMarketValue>
      <noOfUnitsOutstanding>24784449</noOfUnitsOutstanding>
      <approxSaleDate>07/17/2024</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>04/27/2018</acquiredDate>
      <natureOfAcquisitionTransaction>Stock option exercise</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Littelfuse Inc</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>300</amountOfSecuritiesAcquired>
      <paymentDate>07/17/2024</paymentDate>
      <natureOfPayment>cash</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>David Heinzmann</name>
        <address>
          <com:street1>8755 est Higgins Rd</com:street1>
          <com:city>Chicago</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60631</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>07/16/2024</saleDate>
      <amountOfSecuritiesSold>8158</amountOfSecuritiesSold>
      <grossProceeds>2237810.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>07/17/2024</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>02/06/2024</planAdoptionDate>
      </planAdoptionDates>
      <signature>David Heinzmann</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
