SEMICONDUCTOR BC307 MARKING SPECIFICATION TO-92 PACKAGE 1. Marking method Laser Marking No. 1998. 6. 23 816 K 1 2 3 B BC307 2. Marking 4 Item Marking Description Device Name BC307 BC307 Lot No. 816 8 Year 0~9 : 2000~2009 16 Week 16 : 16th Week KEC K KEC CORP. hFE Grade B A,B Revision No : 0 1/1