Schematic of 1.58 MB in PDF, labelled X51C together with T12C; these look like project codes, but no brand, board number or revision is given, so verify the target board…

Complete schematic for the Samsung SM-J120, provided as an 8.41 MB PDF; the Spanish word esquematico completo means full schematic.

MSI MS-7298 motherboard schematic, compressed into a RAR file of about 989 KB. The name offers no revision, chipset or other variant detail, so check the revision…

MSI MS-7293 schematic set, delivered as a 4.23 MB RAR file. No revision, chipset or platform is mentioned in the name, so check the version marking on the PCB near the…

Nokia E7 schematic diagrams in a 5.87 MB PDF, covering the slider communicator with its hardware keyboard.

Circuit diagram for the ThinkPad T43, supplied as a 1.68 MB PDF. The file name carries no board number or revision, so the exact design version has to be confirmed…

PDF schematic covering the SM7225 processor, 1.52 MB, with no handset model or revision mentioned. Open it in a PDF reader to search net names and pin functions.

Revision 5 of a datasheet for the 4N25 optocoupler, a 281 KB PDF. The 4N25 is one of the oldest and most common phototransistor-output isolators, often found in power…

PDF reference, 67.1 KB, for the 2SD1627 transistor, stored in the schematic section. The name carries nothing besides the part number.

An 88.2 KB PDF titled 2SD1884, indexed in the schematic section but, judging by the bare part number, a datasheet for that transistor.

Component sheet for the 2SK2614, delivered as a 172 KB PDF. Within JIS numbering, 2SK marks an N-channel field-effect transistor, so the document presents ratings…

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

Named after the 2SK1425 transistor, this 102 KB PDF is catalogued as a schematic though it is most probably the component datasheet.

2SJ194 is the sole identifier in this 117 KB PDF; in JIS designations the 2SJ series covers P-channel field-effect transistors, so the document should be a part…

The 2SD1061 is the subject of this 102 KB PDF, placed in the schematic section though it reads as a part datasheet.

PDF of 171 KB for the 2SC5199, the same size as several neighbouring 2SC519x entries, which hints at a shared document format or a combined sheet.

Plain 2SC5111 is the whole name of this 245 KB PDF, filed in the schematic section yet most likely the transistor datasheet.

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.

Part number 2SC3955 is all the name reveals for this 40.7 KB PDF, filed among schematics yet most probably a transistor datasheet.

The 109 KB PDF named 2SC4827 belongs to the schematic category, yet its title is simply a transistor part number.

Component documentation for the 2SC3686, packaged as a 92.3 KB PDF and filed as a schematic.

Part 2SC3070 is the subject of this 91.1 KB PDF, listed among schematics. No manufacturer, package or gain grade appears in the name.

At 95.1 KB this is one of the larger files in the set, a PDF named after the 2SB1205 transistor and indexed as a schematic, though it is presumably the datasheet.

Covering the 2SB1018A, this 233 KB PDF is indexed as a schematic but describes a single transistor.

PDF documentation, 260 KB, for the 2SA1955 transistor, listed under schematics but most likely a datasheet because the name is only a part number.

PDF reference for the 2SA1807 transistor, 43.9 KB, listed as a schematic but in practice a component datasheet.

Datasheet PDF of 190 KB for the 2SA1761, filed under the schematic type. In the JIS scheme the 2SA prefix denotes a PNP bipolar transistor, and the name gives nothing…

Datasheet for the 2N3392 in a 296 KB PDF, filed as a schematic. Identical in size to neighbouring 2N3390 to 2N3393 entries, it is probably a shared family document…

A 70 KB PDF on the 1SV311 diode, catalogued in the schematics section. The 1SV prefix comes from the Japanese JIS registration system and is used by Toshiba for…

PDF for the 1SV310, filed as a schematic. The name adds V1, probably a document version, and sot323, the miniature SOT-323 three-lead SMD package.

PDF documentation of the 1SV307 diode, about 69 KB and listed as a schematic. The part number follows the JIS 1SV pattern, which Toshiba uses for variable-capacitance…

Short PDF of 130 KB named 274002, a bare number that gives no device, brand or part information.

PDF circuit diagram for the Quanta-made motherboard DAZ8EMB18A0, revision A, the final letter of the board code.

Quanta schematic for a project coded ZN5, in PDF format. The name gives neither the laptop brand nor the model, so identify the target machine by finding the ZN5 code on…

Schematic in PDF form for the Huawei MateBook X, contained in a 1.38 MB RAR archive. The name gives only the model and states no board number or revision, so verify…

Scanned photos of Apple logic board 820-01598, with J213 and X1536 identifiers, as a 1.33 MB PDF.

Scanned PDF of the September 2006 issue of AudioXpress, the audio electronics magazine, filed here under schematics.

Short-named schematic PDF labelled only M750, 847 KB in size, with no brand, model or board number given.

Schematic PDF for a Dell laptop motherboard with Compal board number LA-D822P; the name does not give the model.

PDF schematic labelled AS6530 with the token ZK3, likely an Acer Aspire 6530, with ZK3 looking like a board project code.