As the datesheet shows, the marking code is like below.

There are two questions I would like to ask.
①There is a black circle in the first Pin. But as I have received the parts from original facory, with the dc 2207+,2235+. There is no with that black circle. as the second and third pictures shows. So do you have a official documents or updated datesheet, showing that the marking code of the part OP284FSZ-REEL7 is already changed.


② There are many different versions in the back of the parts OP284FSZ-REEL7, as the pictures shows. May I know is it because of the difference of Country of Origianl? Or because of different DC? Because it is also don't show in the datesheet. so I need your help!


