X0306 4 2017-07-01 0000088941 SEMTECH CORP SMTC 0001667921 Li Ye Jane 200 FLYNN ROAD CAMARILLO CA 93012-8790 true false false false Board of Directors Restricted Stock Unit 2017-07-01 4 A false 1678 0 A SMTC 1678 1678 D Restricted Stock Unit 2017-07-01 4 A false 1958 0 A SMTC 1958 1958 D Each stock unit is the economic equivalent of one share of Semtech common stock. The stock units vest on the earlier of the one year anniversary of the award or the day immediately preceding the annual meeting of shareholders in the year following the grant and are payable in shares. The stock units vest on the earlier of the one year anniversary of the award or the day immediately preceding the annual meeting of shareholders in the year following the grant and are payable in cash on the last date that the Director renders services to the Company. /s/Ye Jane Li by Charles B. Ammann under Power of Attorney dated February 23, 2016 (Copy On File) 2017-07-05