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Document and Entity Information
Oct. 01, 2020
Cover [Abstract]  
Entity Registrant Name SEMTECH CORP
Amendment Flag true
Entity Central Index Key 0000088941
Document Type 8-K/A
Document Period End Date Oct. 01, 2020
Entity Incorporation State Country Code DE
Entity File Number 001-06395
Entity Tax Identification Number 95-2119684
Entity Address, Address Line One 200 Flynn Road
Entity Address, City or Town Camarillo
Entity Address, State or Province CA
Entity Address, Postal Zip Code 93012-8790
City Area Code 805
Local Phone Number 498-2111
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, par value $0.01 per share
Trading Symbol SMTC
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Amendment Description As previously reported on the Initial Form 8-K filed on October 1, 2020 (the “Initial Form 8-K”), the Board of Directors (the “Board”) of Semtech Corporation (the “Company”) had appointed each of Paula LuPriore and Martin S.J. Burvill to serve as a director of the Company effective October 1, 2020. The Board has determined that each of Ms. LuPriore and Mr. Burvill is an independent director under the listing standards of the Nasdaq Stock Market (“Nasdaq”). As of the date of the Initial Form 8-K, Ms. LuPriore and Mr. Burvill had not been appointed to any committees of the Board.