Datasheet-style PDF of 105 pages' worth of nothing more than a part number: the 2SJ420, a device whose 2SJ prefix under Japanese JIS designation identifies a P-channel…

PDF document for the 2SJ346, filed in the index as a schematic but named after a discrete semiconductor part.

Transistor datasheet for the 2SC3474, supplied as a 303 KB PDF and filed under schematics.

Part reference for the 2SA1291 in PDF form, 40.8 KB. Filed as a schematic, but the name holds nothing other than a component code, and 2SA under the Japanese JIS scheme…

Specification document for the 2SA1728, provided as a 91.2 KB PDF with no board or device model in its name.

Small 27.6 KB PDF for the 2N7051, filed as a schematic but by its name a datasheet for one discrete semiconductor.

Very small PDF of 26.3 KB named with the part number 2N5639 and nothing else. Listed as a schematic, it is most plausibly a short datasheet, since 2N codes are JEDEC…

Indexed as a schematic, 1T369 is a 44.8 KB PDF identified only by its part code. No device, brand or board revision is stated in the name.

Datasheet in PDF form for the 1N4936GP, a glass passivated version of the 1N4936 fast recovery rectifier, about 45.7 KB.

Datasheet for the 1N4448 small signal switching diode, stored as a 78.8 KB PDF. The 1N4448 is a close relative of the widely used 1N4148, offering fast switching in a…

At 86.1 KB, this PDF named 175bgq045 is listed as a schematic, yet the code fits a high-current Schottky rectifier, with 045 typically indicating a 45 V reverse voltage.

Sister document to the 45 V variant, this 85.4 KB PDF for 175bgq030 is filed as a schematic but reads as a component datasheet for a Schottky rectifier, the 030 suffix…

A 761 KB PDF titled 28256a, filed as a schematic but most likely a fuller datasheet edition for a 28-series 256 Kbit parallel EEPROM, the a suffix suggesting a revision…

Indexed as a schematic, this 54.4 KB PDF is named 50HQ, a short series-style code with no laptop model or board number.

Schematic package for the Tecno / Infinix model coded X688B, compressed into a 951 KB ZIP. The name provides no board revision or sub-board details.

Apple logic board schematic for 820-2915 at revision A, an uncompressed PDF of 1.99 MB.

Section 3.5 of a Spanish repair course on the ultrasonic cleaning tank, a 395 KB PDF within the workshop equipment chapter. No device model is given.

Spanish-language guide titled Principales fallas en celulares, the main faults in mobile phones, a 1.34 MB PDF not tied to a specific model or brand.

Spanish cell phone repair course material that appears to come from a training institute abbreviated INED in the name.

ASUS GX502LXS schematic, revision 2.1, in a 14.8 MB PDF. A document of this size typically covers the power supply chain, CPU and GPU rails, charging circuit and…

Troubleshooting chapter, 2.39 MB PDF, with no device or brand named in the title, so the covered model must be confirmed by opening it; it likely belongs to a split…

Schematic for an X421EA mainboard at revision 2.1, provided as a 10 MB PDF. The name states no brand, but X421EA matches ASUS VivoBook model naming; verify against the…

Intel SPI Programming Guide in PDF form, 913 KB, catalogued under schematics although it is a reference document rather than a board diagram.

Gigabyte GA-Z77X-UD3H circuit diagram for board revision 1.2, a PDF compressed into a RAR archive.

MSI MS-7C58 schematic marked revision 10, likely meaning 1.0, with reference number 00205363 in the name, provided as a PDF inside a 1.80 MB RAR.

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.

Circuit diagram set in PDF for the Gigabyte Z590 UD AC, revision 1.1, compressed into a 1.70 MB RAR.

Repair guide for the ASUS K53SV notebook, a 669 KB PDF indexed under schematics; the RG suffix identifies it as an ASUS repair guide. No board revision is stated.

Schematic for MSI graphics card board MS-V387, revision 10, in a decrypted PDF with the reference 00205363 in its name, packed into a 625 KB RAR.

Schematic in PDF format for the ASUS ROG STRIX B360-G GAMING desktop motherboard, in a 1.46 MB RAR archive.

PDF schematic for the ECS B460H6-M14 motherboard, packed as a 1.24 MB RAR. The name gives no revision, so compare the version silkscreened on the board before using…

Schematic in PDF for the Hellcat 17 TGL mainboard, an 8-layer design with Wistron board number 19829-1 and code DKFH0, in an 8.18 MB RAR.

Dell Latitude E5450 laptop schematic for the ZAM70 platform, Compal board LA-A901P at revision r03, in a single PDF.

Small 173 KB PDF named dos vas, a short and uninformative title that most likely refers to a dual VAS layout, the voltage amplifier stage of a class AB power amplifier.

Studiomaster Logic-12 schematic, a compact 552 KB PDF. Studiomaster is a British maker of mixing consoles and powered mixers, and the Logic name refers to one of its…

Main board schematic for the Redmi K40 Pro smartphone, an 858 KB PDF. Phone schematics show the PMIC, charging circuit, battery connector, display and camera lines and…

Power sequence diagram for Apple logic board 820-01055, provided as a 215 KB PDF. The 820 prefix is Apple's own board numbering, visible on the PCB.

Samsung Galaxy A21s schematic, model SM-A217F, a compact 558 KB PDF whose name includes a copy suffix.

PDF schematic for the Gigabyte GV-RX590 GME-8GD graphics card, revision 1.0, an RX 590 model with 8 GB of video memory according to its code, compressed into a 957 KB…

SMD catalog in PDF form, 3.04 MB, listed under schematics but by its name a reference for surface-mount components rather than a circuit for a particular device.