The marking looks ok:
- F130 = LD2981ABM30TR
- F133 = LD2981ABM33TR
- F150 = LD2981ABM50TR
So there is a good chance that the LD2981ABM50TR is also in these devices in SOT23-5L package.
If the problem is solved, please mark this thread as answered by selecting Select as best, as also explained here. This will help other users find that answer faster.
Regards
/Peter
In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.