Welcome to Photrio,
@ColinEOS30!
I'm afraid not. They're all different, and even if the physical dimensions are the same, there can be big differences. I would not have expected a clear specification to be present in the X700 service manual; no surprise there.
This
may be a suitable type. The spectral sensitivity seems appropriate, although there's no chart included and it's of course unknown what the spectral sensitivity is of the original sensor used by Minolta. As you may have noticed, the datasheet of the sensor you found lists two types (VTB8440BH and VTB8441BH), which have very different performance (the latter is far more sensitive). This illustrates what I said above about physical dimensions and performance.
I'm sorry to say that there's probably no reliable way to determine which photodiode could be substituted here, unless you get hold of a product type and accompanying datasheet of the original part used by Minolta.
PS:
@Andreas Thale no longer publicly posts on the forum. I suspect he does still read it from time to time and he may respond to your question if he has the answer - which, honestly, I doubt.