It is not SOT23-5. Look at the real SOT23 near it.
This is a SC70, or thereof.
The package nomenclatures confuse me a lot. I just use parts that I've used personally as a reference. I have never seen a part that would be of the same size as your typical 3-pin SOT-23 with 5 pins.
The LDO I use all the time MIC5504-3.3YM5-TR comes in the same small package. The datasheet calls it SOT-23-5. On the digikey it is described as "Package / Case: SC-74A, SOT-753", "Supplier Device Package: SOT-23-5".
But calling those smaller packages "SOT-23-5" for search purposes was more useful than not, so I personally will continue to do so.
It is not that useful, especially when you know it is not true.
SOT23 is always SOT23 size, and there are 3, 5, 6 and even 8 pin variant of it. The plastic body is still the same size (3mm wide). 4 pin variant of SOT23 exists too, but it is called SOT143 and one of the leads is wider.
Do not confuse SOT143 (3mm) with SOT343, that is the smaller brother of it (2mm wide body).
SC70 (2mm wide body also called SOT323) is the smaller brother of SOT23 (3mm wide body).
SC88 is I think a 5pin variant of SC70, and SOT363 is sometimes what a 6pin SC70 is called as.
If not enough confusion already, I think there is even smaller variant of all those, the SOT416 (1.6mm wide body). And all derivates of it.
//EDIT: There is indeed a metric crap ton of SOT23-5 devices sized exactly as SOT23. For example: MCP6001T-I/OT, 74LVC1G14DBV, .. etc. ... Just look around.
Also please account for manufacturing tolerance of couple tenths of milimeter, with these devices. The sizes mentioned above shall be the nominal ones.