I’ve seen different numbers in the same font on many circuit boards. What does it typically mean?
I’m not sure! If I had to hazard a guess, it would be that the board was assembled on Jan 2019. Or I guess 19th January, technically (although this seems less likely, it makes more sense to indicate the year I think).
It could also be the batch number or assembly line number, but it seems more likely to be a date.
The board version (V2.2) and some form of product identifier (DK001-D) already seem to be there, so those are ruled out.
Usually it’s the date code.
At my company that code would mean 2019 week 1 (first week of jan). We also do a shift number as a 3rd part.
It’s also common for the second number to be months.
Interesting! So this would end up meaning that you’d need to send new gerbers between production runs?
Or is this one of the edits that the fab house does to the gerbers without customer intervention (once asked, of course).