SEMICONDUCTOR U5A2CI MARKING SPECIFICATION TO-220IS PACKAGE 1. Marking method Laser Marking or Ink Marking. 2. Marking U5A2CI 1 K 2 2002. 5. 27 016 3 No. Item Marking Description ① Deivce Name U5A2CI U5A2CI ② KEC K KEC CORP. ③ Lot No. 016 Revision No : 0 0 Year 0~9 : 2000~2009 16 Week 16 : 16th Week 1/1