Stored under schematics, this 171 KB PDF is named 2SD1407A and is most probably the datasheet for that transistor variant, the A suffix distinguishing it from the base…

Component data for the 2SA1480 in a 176 KB PDF, which the index lists as a schematic. By the JIS convention, 2SA marks a PNP transistor.

Documentation for the 2SD2241 NPN transistor, supplied as a 178 KB PDF and categorised as a schematic. The name provides only the part number.

The 2SC3666 is documented here in a 175 KB PDF. Following JIS semiconductor naming, 2SC designates an NPN bipolar transistor, and since the name holds only the part…

The 174 KB PDF named 400CNQ is filed under schematics but its name carries no model or board number.

For the 2SK2744 this 177 KB PDF provides component-level reference material, although the index lists it among schematics.