The 24WC257 is a Catalyst Semiconductor I2C serial EEPROM, and this 55.6 KB PDF, though catalogued as a schematic, is almost certainly its datasheet.

Datasheet for the 2SD1776 transistor, which the 2SD prefix marks as an NPN bipolar device for low-frequency applications.

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

A 43.9 KB PDF for the 2SD2580, indexed as a schematic. Japanese JIS numbering reserves the 2SD prefix for NPN bipolar transistors in low-frequency applications, so this…

Transistor datasheet for the 2SD2155, stored as a 177 KB PDF and filed with schematics.

Listed as a schematic, this 89.6 KB PDF is named 2SD1883 and is most likely the corresponding transistor datasheet rather than a circuit drawing.

Component data for the 2sd2396, supplied as a 42.0 KB PDF and indexed under schematics.

Datasheet-style PDF, 326 KB, titled with the 2SK2823 part number and stored among schematics. Under the Japanese JIS standard, 2SK indicates an N-channel FET.

Datasheet material for the 2SK2391 in a 420 KB PDF, filed as a schematic. Because 2SK is the Japanese JIS prefix for N-channel FETs, the document most likely describes a…

Indexed as a schematic, this 422 KB PDF is titled 2SK2201 and most likely contains the datasheet for that part.

A 121 KB PDF named 2SK2170, listed among schematics but most likely the datasheet for that single device.

The 2SK1724 is the subject of this 91.6 KB PDF. Following Japanese JIS/JEITA conventions, 2SK parts are N-channel FETs, so the document should list absolute maximum…

A 111 KB PDF for the 2SK1453, placed among schematics, although the part-number naming points to a component data sheet.

PDF of 109 KB listed under schematics and named after the 2SK1441 part. The 2SK prefix places it in the JIS family of N-channel field-effect transistors, so the contents…

Datasheet-type PDF of 110 KB for the 2SK1414, indexed as a schematic. Its 2SK prefix comes from Japanese JIS numbering and identifies an N-channel field-effect…

Component document for the 2SK1365 N-channel FET, a 442 KB PDF placed in the schematic section of the index.

PDF reference for the 2SK1332 N-channel transistor, 103 KB, catalogued with schematics though it describes a single semiconductor rather than a circuit board.

Datasheet PDF for the 2SJ320, around 94.6 KB, indexed as a schematic. The name provides no device, board or revision details beyond the part number.

An 86.9 KB PDF identified by the part number 2SJ231 alone. Under Japanese JIS designation, 2SJ covers P-channel FETs, so this is most plausibly a transistor datasheet…

The 2SD896 is the subject of this 124 KB PDF, sorted into the schematic category. No further detail appears in the name beyond the part number.

The 2SC5297 is covered by this 100 KB PDF. The 2SC designation marks a JIS-registered NPN transistor, so the document is most probably the component datasheet despite…

Datasheet-style PDF of 101 KB for the 2SC4710, catalogued among schematics. The 2SC prefix is the Japanese JIS code for an NPN bipolar transistor, and the name adds no…

For the 2SC4631 transistor, the index holds this 97.9 KB PDF, categorised as a schematic but evidently a component datasheet.

Reference PDF for the 2SC5227 transistor, 128 KB in size and indexed under schematics. The 2SC designation follows the JIS convention for NPN bipolar parts.

Transistor datasheet for the 2SC5200 in a 172 KB PDF, listed under schematics but named only by part number.

For the 2SC4597 transistor, this 118 KB PDF is listed as a schematic but most likely holds the manufacturer datasheet.

Specification sheet for the 2SC4521 transistor, delivered as an 87.4 KB PDF. Following JIS numbering, 2SC denotes an NPN bipolar part; the catalogue tags it as a…

A 144 KB PDF specification for the 2SC4481 transistor, filed as a schematic but in fact a component datasheet.

Datasheet for the 2SC4480, stored as a 99.8 KB PDF that opens in any standard reader. By JIS convention the 2SC prefix denotes an NPN bipolar transistor; the name gives…

Transistor reference for part 2SC4446, a 143 KB PDF classed as a schematic. Japanese JIS registration gives the 2SC prefix to NPN bipolar devices designed for…

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.

Listed as a schematic, this 88 KB PDF carries only the name 2SC4113, a transistor part number under the Japanese 2SC scheme that marks NPN high-frequency bipolar…

The name of this 160 KB PDF gives only 2SC5738, and the index files it under schematics.

At 188 KB, this PDF for the 2SC5466 is larger than a basic sheet and likely includes full characteristic curves and package drawings.

Covering the 2SC3953 transistor, this 40.7 KB PDF is catalogued as a schematic, though a JIS part-number name like this normally denotes a datasheet.

PDF documentation, about 100 KB, for the 2SC3749 transistor. Under the JIS numbering convention, 2SC identifies an NPN bipolar device, so the file is most likely a…

The 2SC3676 transistor is covered in this 96.8 KB PDF, which the index files as a schematic.

Component sheet for the 2SC3644 in a 120 KB PDF. JIS designation rules assign 2SC to NPN bipolar transistors; no device, board or version is mentioned in the name.

The name of this 238 KB PDF consists solely of 2SC3425, a JIS designation for an NPN bipolar transistor.

Part code 2SC3422 is the only clue in this 176 KB PDF filed as a schematic. The 2SC series in the Japanese JIS system covers NPN bipolar transistors, making a component…