Here is a 297 KB PDF named 2SC5590, sorted under schematics but bearing only a component number, so it should be the datasheet for that part.

Small 58.3 KB PDF titled 2sc5103 in lower case, catalogued as a schematic yet evidently a short datasheet for the 2SC5103.

Filed among schematics, this 467 KB PDF carries just the transistor number 2SC4320 and should be regarded as its datasheet.

2SC4317 is the sole identifier in this 468 KB PDF, listed as a schematic but most likely the component datasheet.

This 463 KB PDF, named after the 2SC4315, is grouped with schematics, though a bare part number like this usually indicates a datasheet.

Covering the 2SC4306, this 100 KB PDF is indexed as a schematic, but with no board or device named it is best treated as the transistor datasheet.

Bearing only the number 2SC4293, this 92.7 KB PDF is catalogued under schematics while most likely holding the datasheet for that transistor.

At just 39.2 KB, the PDF named 2SC4291 is a compact document filed as a schematic, though the name suggests a brief transistor datasheet.

A 94.1 KB PDF labelled 2SC4272, sitting in the schematic category but carrying only a part number, so it is probably the datasheet for that transistor.

Datasheet-style PDF for the 2SC4271 transistor, catalogued here under schematics and weighing 78.2 KB. The name gives only the part number, with no maker or revision.

A 107 KB PDF covering the 2SC4270, a JIS-numbered part. The 2SC prefix denotes an NPN transistor intended for high-frequency use.

Component documentation for the 2SC4269 in PDF form, 108 KB in size, listed in the schematic category. Nothing beyond the part number appears in the name.

PDF reference for the 2SC4257 transistor, 81.6 KB, filed under schematics although it is a part document rather than a board drawing.

Reference sheet in PDF format for the 2SC4256, 80.8 KB in size. The file name gives no manufacturer, package or revision details.

The 2SC4253 transistor is documented in this 303 KB PDF, indexed among schematics. Only the part number is given in the name; maker and revision are not stated.

PDF documentation for the 2SC4252, 302 KB, catalogued in the schematic section. No further information such as manufacturer, package or version is carried by the name.

A 297 KB PDF describing the 2SC4251 transistor. The name contains just the part number, so the issuing manufacturer and revision must be read inside the document.

Part datasheet for the 2SC5589 in PDF, 298 KB, grouped with schematics in this index. The file name states only the part number.

The 2SC5588 is covered by this 332 KB PDF document. Apart from the part number the name gives no detail, so maker and revision are unknown until the file is opened.

PDF datasheet for the 2SC5587 transistor, 332 KB, filed under schematics. Only the part number is given; there is no manufacturer, package or version in the name.

Compact 63.0 KB PDF for the 2SC5585, a JIS-numbered transistor, indexed with schematics. The name provides the part number alone, without maker or revision.

Small Excel spreadsheet of 12.0 KB whose name refers only to GDDR6X, the graphics memory type used on some modern video cards.

PDF for the 2SC5584 transistor, only 45.9 KB, catalogued under schematics. The name holds nothing beyond the part number, so manufacturer and revision are not given.

Datasheet in PDF format for the 2SC5583, 46.0 KB in size. The file name states the part number and nothing else.

The 2SC4250 transistor is documented in this 347 KB PDF, listed among schematics in the index.

Short 40.3 KB PDF describing the 2SC5578 transistor. No manufacturer, package or version appears in the file name.

PDF part sheet for the 2SC5577, 40.7 KB, catalogued with schematics. The name gives only the part number and says nothing about the maker or revision.

A 49.7 KB PDF covering the 2SC5576 transistor. Only the part number is present in the name, with no package, manufacturer or revision information.

Datasheet PDF for the 2SC5575, 52.0 KB, placed in the schematic section of the index. The file name contains only the part number.

The 2SC4249 transistor is the subject of this 263 KB PDF, filed under schematics. The name carries the part number alone, so maker and revision are not stated.

PDF reference for the 2SC4248 transistor, 300 KB in size. Beyond the part number the file name gives no information about manufacturer, package or revision.

Transistor datasheet in PDF for the 2SC4247, 302 KB, indexed with schematics rather than board diagrams. Only the part number is provided in the name.

A 305 KB PDF for the 2SC4246 transistor. The name states nothing apart from the part number, so the manufacturer and revision have to be read inside the document.

Part documentation in PDF form for the 2SC4245, 335 KB, catalogued in the schematic category. The file name gives only the part number without maker, package or version.

A 274 KB PDF named after the part number 2SC4244, filed under schematics but most likely a component datasheet.

Reference PDF for the 2SC4224, at 97.3 KB, catalogued as a schematic although the name is just a semiconductor part number.

Part number 2SC4223 is all the file name gives, so this 93.9 KB PDF is best treated as a datasheet for that component rather than a circuit schematic.

Datasheet-style PDF, 95.3 KB, for the 2SC4222 transistor. It is indexed as a schematic, but the name holds only the part number.

At 108 KB, this PDF is labelled with the transistor type 2SC4221 and nothing else, so no board, model or revision is identified.

Component documentation for the 2SC4220, delivered as a 106 KB PDF and filed under schematics.