AP3917BOrdering InformationAP3917B X - X Product Name Package Packing S7 : SO-7 13 : 13" Tape & Reel 13’’Tape and ReelPackagePart NumberMarking IDQuantityPart Number Suffix SO-7 AP3917BS7-13 3917B 4000/Tape and Reel -13 Marking InformationPackage Type: SO-7(Top View) Logo YY : Year : 19, 20, 21 ~ Marking ID 3917B WW : Week : 01~52; 52 represents 52 and 53 week YY WW X X X X : Internal Code