Named 1SR159-200, this 117 KB PDF is listed as a schematic but the title reads like a discrete semiconductor part number, with the 200 suffix most likely marking a…

Small at 53.4 KB, this PDF titled 95HQ015 is indexed as a schematic, yet the code reads like a Schottky rectifier designation and the content is probably a compact…

Listed under schematics, this 56.0 KB PDF carries only the short code 63cnq, without a full suffix, brand, model or board revision.

Catalogued as a schematic, this 232 KB PDF carries only the code 40CTQ045, which reads like a discrete semiconductor part number rather than a laptop board number.

PDF of 59.1 KB labelled only 30BF and listed as a schematic, with no model, brand or board number provided.

MSI schematic in PDF form for board MS-17E71. MSI uses its own MS- numbering, where the digits identify the project and the last digit the board version.

PDF schematic named scala3-14, which looks like an internal ODM project code, probably for a 14-inch platform, though no brand or board number is given.

Studiomaster M1000 schematic, supplied as a 576 KB PDF. Studiomaster builds professional audio gear such as mixers and amplifiers, and a diagram like this is used to…

PDF schematic of the Gigabyte GA-H81M-DS2V, board revision 1.03, packed in a 549 KB RAR.

PDF schematic of about 979 KB carrying only the code KL2D, with no brand, model or board number given.

Schematic in PDF format for a board coded Z62HA, apparently a variant of the Z62H design. No brand, model or revision appears in the name.

Wistron board 17510-2 reference in PDF, about 6.3 MB, labelled as a boardview. A PDF layout of this kind opens in any PDF reader and lets you search designators to find…

Short Spanish PDF course on the oscilloscope, 375 KB, with no device or model associated. It is study material, not a circuit diagram.

Schematic PDF for a Dell laptop board built by Compal, labelled LA-B015PI, 1.70 MB; the specific Dell model is not stated in the name.

Schematic diagram and service manual for the Xiaomi Mi 6 smartphone, a 733 KB RAR archive.

Schematic for the Dell 7447 on Quanta board DA0AM7MB8D0, project code AM7, supplied as a PDF in a 1.64 MB RAR.

PDF document of 13.6 MB named I9000, the model code of the original Samsung Galaxy S, although the file name gives no brand or document type.

PDF schematic called z3, a large 15.7 MB file whose short name gives no brand, board number or revision.

Quanta AT3 motherboard schematic at revision R1A, here as the fourth copy of a 1.26 MB PDF.

Covering the 2SD1817, this 75.8 KB PDF is indexed as a schematic but by name is a component datasheet. No maker or revision is indicated.

Reference sheet of 41.7 KB in PDF format for the 3LP02M, filed among schematics though it is effectively a component datasheet.

Part reference for the 2SK2607, an N-channel FET according to the 2SK prefix of the JIS numbering convention.

Part-number PDF for the 2SK1471, 92.5 KB in size and labelled as a schematic in the index.

Catalogued as a schematic, this 100 KB PDF is named after the 2SC4031 and is most likely its datasheet. JIS numbering uses 2SC for NPN bipolar transistors.

Reference document for the 2SC3112 transistor, supplied as a 257 KB PDF and filed under schematics. The name holds only the part number.

A 508 KB PDF filed under schematics, named only with the JIS part number 2SC2996. The 2SC prefix identifies an NPN bipolar transistor, so the document is probably a…

Indexed as a schematic, this 40.2 KB PDF is named 2SB1220 with an _E suffix and almost certainly contains the datasheet for that JIS transistor.

Datasheet-style PDF, 206 KB, for the 2SA1893 PNP transistor from the JIS 2SA family. Nothing in the name points to a specific device or board, so treat it as part…

Larger 546 KB PDF datasheet covering the 2N5400, a high-voltage PNP small-signal transistor; the size suggests a scanned or multi-part document.

The name points to the 1SV248 device, and the 60.4 KB PDF is filed as a schematic. Because 1SV is Toshiba's designation for variable-capacitance diodes, the document is…

PDF file for the 1SS388 part, 68.6 KB, catalogued under schematics though most likely a single-component datasheet.

A 21.1 KB PDF carrying the part number 1n6768, best understood as a datasheet for a JEDEC 1N-series device rather than a board schematic.

Series datasheet for the 1N5221 to 1N5281 zener range, a compact 35.5 KB PDF filed as a schematic.

Named only 50WQ10F, this compact 39.2 KB PDF sits in the schematic category but gives no laptop model, brand or board number.

Indexed as a schematic, the 54.3 KB PDF named 30LJQ045 is most likely a datasheet for a rectifier diode, the 045 grade within the LJQ series present in this collection.

This 112 KB PDF in the schematic section is named 20ETF-S-HV. The name lists no laptop model, board number or revision, only a part-style code with S and HV suffixes.

Schematic in PDF for the ASUS K53SV notebook; the name does not state the mainboard revision.

Boardview drawing in PDF form for the Gigabyte GA-F2A55M-DS2, revision 1.02, with BV standing for boardview.

Huawei Honor 6 reference sheet in PDF form, covering the input and output voltages of the phone's circuits, filed under schematics at 1.24 MB.

PDF schematic for the Xiaomi Redmi 9T, the name indicating that PCB layout pages accompany the circuit diagrams, file size about 2.33 MB.