Vishay DF10S Part Marking

When looking at DF10S from Vishay Semiconductor Diodes, the part markings you will see on the datasheet are DF10S. However, there are more part markings that are not listed on the datasheet. For example, part DF10S-E3/77 may have part markings of DF10S, with 542H also on it. Here are some images from Vishay that show what the 542H call out.
Screenshot 2020-10-19 160309 vishay DS10S Screenshot 2020-10-19 160400 vishay DF10S (1)