PDF of 129 KB for the 2SK2103 N-channel FET, filed as a schematic but almost certainly a datasheet.

Named after the 2SK210, this 362 KB PDF sits in the schematic category but most probably contains the datasheet for that JIS N-channel FET.

The 2SK2108 is the part number behind this 93 KB PDF, which is indexed as a schematic but most likely holds the transistor datasheet.

Datasheet-type PDF for the 2SK2103, about 128 KB, listed under schematics. Under the JIS scheme the 2SK prefix denotes an N-channel field-effect transistor.

The 2SK2101 part number is followed by an extra 01mr suffix in this 175 KB PDF. The name does not explain that suffix, which could be a document code or revision.