Schematic PDF for the ASUS F5Z notebook, 863 KB, with no board revision mentioned in the name.

ADM232 document from Analog Devices, a 371 KB PDF for the dual RS-232 driver and receiver with an onboard charge pump.

PDF datasheet of about 125 KB covering the 2SD1766 NPN transistor, part of the Japanese JIS 2SD numbering.

Covering the 2SK2991, this 420 KB PDF is named only by part number, which points to an N-channel field-effect transistor in the Japanese JIS numbering system.

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…

PDF documentation for the 2SK772, size 77.7 KB. Within the Japanese JIS numbering scheme, 2SK identifies N-channel field-effect transistors, so the content is most…

Under the name 2SC5064, this 468 KB PDF is filed as a schematic, yet the identifier is a Japanese-standard NPN transistor number, so a datasheet is what to expect…

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.

A 115 KB PDF for the 2SC3643. In Japanese JIS numbering the 2SC prefix denotes an NPN bipolar transistor, and the bare name suggests a manufacturer datasheet instead of…

Identified solely as 2SC3420, this 180 KB PDF is filed under schematics. In the Japanese JIS registration scheme a 2SC number is an NPN bipolar transistor, so expect a…

Part document for the 2SC2715, supplied as a 334 KB PDF in the schematic category. The 2SC code identifies an NPN transistor under the Japanese JIS system.

The 2SB1344 transistor is the subject of this 38.9 KB PDF, which the index lists under schematics.

Specification document for the 2SB1127 transistor, a 93.1 KB PDF indexed under schematics.

Datasheet material for the 2SB1037 transistor, delivered as a 122 KB PDF in the schematic category.

For the 2SA1967 transistor, this 90.5 KB PDF most likely provides the manufacturer datasheet despite being filed as a schematic.

The 2SA1942 is covered by this 186 KB PDF, filed under schematics though it most likely contains the part datasheet.

Reference PDF for the 2SA1923 transistor, 195 KB, catalogued as a schematic though nothing in the name beyond the part number indicates more than a datasheet.

Datasheet for the 2N5195 bipolar transistor, a 120 KB PDF filed under schematics. The name gives no manufacturer or revision.

This 260 KB PDF labelled 1B51 is catalogued as a schematic, though the short code more likely names a discrete component and the file is probably its datasheet.

Datasheet-style PDF of 130 KB for the component numbered 12CWQ04FN, although the catalogue lists it as a schematic.

RAR-compressed schematic for the Huawei MateBook X notebook, without a board number or revision in its name.

Schematic in PDF for the Xiaomi Poco X3 Pro smartphone, 4.12 MB. The name gives no board revision or variant, so compare markings on the PCB with the drawings.

Quanta R62 laptop mainboard schematic in PDF, with a 1022 tag that likely marks a date or build.

Troubleshooting guide in PDF for the Samsung SM-A105FN (Galaxy A10), where Tshoo is read as troubleshooting and 7 likely marks a service manual chapter.

Component placement drawing for the Apex AX 20 amplifier board, a 61 KB PDF. It shows where each resistor, capacitor, transistor and connector sits on the PCB, which…

Tone control circuit intended for a 2.1 channel audio system, in a 159 KB PDF. It shows the bass and treble adjustment network that sits between the source or preamp and…

Speaker protection circuit for a 2.1 audio setup, a user-drawn design in a 139 KB PDF. Such boards normally delay relay engagement at power-up to stop thumps and…

Schematic of a 2.1 channel amplifier based on the TDA2030A, from Technical Mriganka, in a 416 KB PDF.

Laptop schematic for model code U6V, a PDF of 950 KB. The name carries no brand, board number or revision, so confirm the project in the title block matches the PCB in…

Schematic in PDF format named simply SL410, about 1.32 MB, probably covering a ThinkPad SL410 mainboard, although the name confirms neither brand nor board number.

Schematic for MSI motherboard MS-16811 at revision 0B, provided as a PDF inside an 826 KB RAR archive.

PDF procedure document dated 20170811 describing a firmware update for the MP2949 IMVP8 voltage regulator controller on the ASUS UX490UAR.

Schematic in PDF format identified only as AB540, in a 1.47 MB ZIP archive. The name gives no brand, device type or revision, so confirm the code against the markings on…

Service schematic for the Samsung Galaxy A50, model SM-A505F, supplied as a 7.32 MB PDF.

SM4450 processor schematic in PDF form, 1.28 MB; the name gives no phone model, board number or revision.

Reference sheet in PDF format, 137 KB, for the 2SD1840 transistor from the 2SD family of NPN bipolar devices; despite the schematic label, expect datasheet content.

Compact 46 KB PDF datasheet for the 2SD1757K, an NPN transistor under Japanese JIS designation, with a K suffix marking its variant.

Reference PDF of 71.2 KB for the 2SD1981 transistor, catalogued as a schematic. Japanese JIS numbering assigns the 2SD prefix to NPN bipolar parts designed for…

Datasheet PDF for the 2SD1979, filed under schematics at 42.4 KB. The 2SD prefix follows JIS convention for NPN bipolar transistors of the low-frequency class, and the E…

PDF of 363 KB for the 2SK192A, listed among schematics but named after a single JIS part, with an A suffix that the name explicitly includes.