semiconductor KTC812T 2005. 11. 7 1/1 marking specification ts6 package revision no : 0 1. marking method laser marking 2. marking m b j a 2 1 no. item marking description device mark m KTC812T hfe grade b b lot no.* ja 2005. 1st week [0:1st character, 1:2nd character] lot no. description remark 01, 02 ....51, 52 01 : 2002. 1st week, 02 : 2002. 2nd week 51 : 2002. 51th week, 52 : 2002. 52th week. rotation for 4 years : 01...52 : ...2002, 2006, 2010... 0a...5b : ...2003, 2007, 2011... j1...e2 : ...2004, 2008, 2012... ja...eb : ...2005, 2009, 2013... 0a, 0b ....5a, 5b** 0a : 2003. 1st week, 0b : 2003. 2nd week 5a : 2003. 51th week, 5b : 2003. 52th week. j1, j2 ....e1, e2** j1 : 2004. 1st week, j2 : 2004. 2nd week e1 : 2004. 51th week, e2 : 2004. 52th week. ja, jb ....ea, eb** ja : 2005. 1st week, jb : 2005. 2nd week ea : 2005. 51th week, eb : 2005. 52th week. ** : meaning (a=1, b=2, c=3, d=4, e=5, f=6, g=7, h=8, i=9, j=0) * : lot no. marking method
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