Datasheet-style PDF for the 2SK2126, around 34 KB, indexed as a schematic. The JIS prefix 2SK marks it as an N-channel field-effect transistor, and the name says nothing…

A 34 KB PDF linked to the 2SK2123, listed as a schematic but probably the device's datasheet.

The 2SK2129, a JIS-registered N-channel FET, is the only thing the name identifies in this 32 KB PDF.

Reference PDF for the 2SK2122, about 35 KB and catalogued under schematics, although the plain part-number name implies a datasheet.

Covering the 2SK2125 N-channel FET, this 35 KB PDF is filed under schematics, though a part-number-only name normally indicates a manufacturer datasheet.

The name carries only the part number 2SK2127, an N-channel FET designation in the Japanese JIS system.

Component document for the 2SK212 in PDF form, 156 KB, indexed under schematics. Japanese JIS numbering assigns the 2SK prefix to N-channel FETs, so the file should be…

Short PDF of about 34 KB tied to the 2SK2128 part number. It is catalogued as a schematic, but with nothing besides the part number in the name it is presumably a…

Part number 2SK2124 is the sole detail here, in a 32 KB PDF catalogued as a schematic and most likely a short datasheet.