Small 33.0 KB PDF for the 3SK144, catalogued as a schematic but named for an individual semiconductor, so it is most likely a datasheet.

Document for the 3SK227 semiconductor, stored as a 30.6 KB PDF and catalogued under schematics.

Component datasheet for the 2SK1057, packaged as a 55 KB PDF. The 2SK prefix marks an N-channel FET in the Japanese numbering system, and this number sits in the same…

Top-side print for a universal dos vas Matrix board, likely a dual voltage-amplifier-stage module, marked langsung print, meaning ready to print directly.

Firmware archive for the HP EliteBook Folio 1040 G1 on the Wistron Bullet board 12295-2, PCB part 48.4LU01.021.

The largest of this group at 465 KB, the PDF named 2SC4394 is most likely a full datasheet for that transistor rather than a board schematic, despite its index label.

At 275 KB, this PDF for the 2N6050 is one of the larger sheets in the set. It is indexed as a schematic, though it is most likely a full datasheet with curves.

Datasheet for the 2N5415, a high-voltage PNP bipolar transistor, stored as a compact 45.3 KB PDF in the schematic section.

Datasheet for the 2N5301 transistor, stored as a 252 KB PDF with an RE suffix whose meaning the name does not explain.

Bottom copper layout for the universal dos vas Matrix board, probably a dual voltage amplifier stage module, tagged langsung print for direct printing.

Documentation for the Apple 820-2299 audio board, a separate small board for the audio circuit, packed into a 140 KB RAR.

Vivo Y83 phone schematic material in a 631 KB RAR archive containing a PDF, named after a fault where the handset was heavily dropped and then stopped sending messages.

Datasheet-style PDF for the 2SD1302, 46.0 KB, listed in the schematic category. The 2SD prefix follows the Japanese JIS designation for NPN bipolar transistors in…

Named only 2SC4365, this 148 KB PDF is filed with schematics but should contain the manufacturer datasheet for that transistor.

Named for the 2SB1214 transistor, this 71.3 KB PDF is catalogued as a schematic but is expected to be the part's datasheet.

Main document for the subwoofer 7294 design, version 1.1, a 138 KB PDF without a further descriptor in its name.

PDF schematic for an active subwoofer project designated PSW500, a 284 KB document credited to Rat Net, whose name describes it in Spanish as an active subwoofer.

Mirrored version of the Apex AX 20 copper-side layout, a small 62.3 KB PDF. The reversed image is meant for toner-transfer or photoresist methods, where the pattern must…

Reference document on toroidal transformers, a 5.83 MB PDF; no device, brand or model is named.

PDF datasheet for the EL1604, filed as a 64 KB document; the name gives only the part number.

PDF for the complementary TIP3055 NPN and TIP2955 PNP power transistors, 50.1 KB, indexed under schematics.

Datasheet for the 2N5209 transistor, a 278 KB PDF with an RE suffix that is not explained by the name.

Sony SA-WGT5D schematic in PDF format, 15.9 MB in size. The name gives only the model, which follows Sony's SA- prefix for speakers and subwoofer units, so open the…

Soft start circuit schematic, saved as a 1.78 MB PDF; the note in the name indicates it was converted from another format.

Compact 64.3 KB PDF application note for the XR2206 function generator chip from Exar. It is intended as a practical reference for how the IC is wired in a working…

RAR with BIOS images for the HP EliteBook Folio 1040 G1, Wistron Bullet motherboard 12295-3, PCB part 48.4LU01.031.

PDF covering the 3SK189, about 178 KB in size and listed in the schematic category, though the name points to a single component datasheet.

PDF datasheet of 73.0 KB for the 2N2906 transistor, stored in the schematic section of the index.

Audio schematic for the Samsung SM-A21s covering microphone, loudspeaker and earpiece, PDF, 3.82 MB.

Cellular network section of the Samsung SM-A11 schematic, saved as a 4.33 MB PDF. It covers the RF transceiver area, power amplifiers, antenna switches, filters and the…

Cellular network section of the Samsung Galaxy A02s (SM-A02S) schematic in PDF format, 3.70 MB.

Regulated power supply for a preamplifier, drawn in a 601 KB PDF schematic with a source tag in the name.

PDF document of 577 KB for the AD620, filed in the schematic category although a part-number name like this normally indicates a component datasheet.

The 2SD1908 transistor is documented in this 85.8 KB PDF, which the index files as a schematic, although a JIS part number like this normally indicates a datasheet.

Datasheet-style PDF covering the 2SD1199, catalogued under schematics, with an _E suffix in the name that the file does not explain.

Datasheet PDF of 204 KB for the 2N3771, a JEDEC 2N-series transistor, catalogued in the schematic section.

Schematic in PDF format for the Ahuja DXA 1802, about 1.63 MB, belonging to the Ahuja range of public address amplifiers.

Schematic collection for the Studiomaster PA series in a 2.65 MB PDF, apparently covering several models in that range, although the individual model numbers are not…

Printed circuit board layout for the subwoofer 7294 project, revision 1.1, as a 72.5 KB PDF.

Assembly drawing for the subwoofer 7294 amplifier, version 1.1, provided as a 138 KB PDF; montaz is Polish for assembly.