Compact 80.7 KB PDF for the 189NQ135, a single Schottky rectifier designation in the NQ range; the 135 suffix most likely means a 135 V reverse rating.

The 2SA1942 is covered by this 186 KB PDF, filed under schematics though it most likely contains the part datasheet.

This 183 KB PDF takes its name from the 2SC2840 and is indexed as a schematic. In Japanese JIS designations, 2SC means an NPN bipolar transistor, so the document is…

The 2SC4685 is documented in this 186 KB PDF, filed as a schematic though the name is a transistor part number.

The 182 KB PDF bears the name 2SC5712, a JIS designation pointing to an NPN bipolar transistor, so it is presumably a datasheet despite the schematic label.

Datasheet in PDF for the 2SB1558 transistor, roughly 185 KB, listed under schematics. The 2SB designation follows the Japanese JIS standard for PNP low-frequency bipolar…

For the 2SA1783 transistor, a 186 KB PDF sits in the schematic category, though the JIS designation makes it a part datasheet rather than a circuit diagram.

The only detail in this 183 KB PDF name is the part number 2SD2461, indicating the datasheet for that transistor.

The 2SK1747 is the subject of this 184 KB PDF. Japanese JIS designation 2SK means an N-channel field-effect transistor, so the file is probably the manufacturer…

Data sheet style PDF of 189 KB named 2n1792, listed under schematics. The lowercase name follows the JEDEC 2N pattern for discrete semiconductor devices, and no…

Datasheet-type PDF, 180 KB, for the 2SA1899 component, filed as a schematic although the name carries no detail besides the part number.

The 2SB1642 PNP transistor is documented in this 181 KB PDF, listed as a schematic though it is a part datasheet.