PDF schematic of 45.2 KB for a Dynatech V5000 SMD preamplifier with display section, plus an inverter design attributed to Pappu.

Schematic diagram with accompanying service manual for the Lenovo K900 phone, packed in a compact 417 KB RAR file. No board number or revision is given in the name.

Thirteenth issue of El mundo de la electronica, a Spanish-language electronics course delivered as a 1.47 MB PDF.

PDF schematic identified only by a number, giving no device, brand or revision information; it weighs 43.2 MB, typical of high-resolution or many-page circuit diagrams.

Schematic for the Nokia 2630, a slim basic handset, in a small 424 KB PDF. The file gives no board revision, so compare the board in hand with the drawings before…

Schematic in PDF titled only N5110, 1.45 MB, with no brand, board number or revision given in the name.

Document for the 3DD304X, stored as a 489 KB PDF and catalogued under schematics, though the name suggests a component datasheet.

A PDF reference sheet for the 2SD2259 transistor, catalogued as a schematic but in practice a component datasheet of 43.3 KB.

Small 27.4 KB PDF named after the part code 5LN01C, indexed as a schematic though it reads like a discrete-component datasheet.

PDF of 43.6 KB for the 3N252, listed under schematics though the name is a bare JEDEC part number.

Small 45.6 KB PDF named 2SD1902, a Japanese standard transistor number; despite the schematic label it is most probably a short datasheet.

Component documentation for the 2SK2920, a 409 KB PDF filed under schematics in this index but almost certainly a part datasheet.

Part reference for the 2SK2862 in a 411 KB PDF, listed under schematics in this index. The name carries only the transistor number.

PDF of 33.4 KB describing the 2SK2016 transistor, an N-channel FET by its JIS 2SK prefix. It is catalogued as a schematic but is best used as a component datasheet.

The 2SJ339 appears in this small PDF of roughly 40.7 KB. The name carries only the part number, with no hint of the equipment it came from.

A compact 47.6 KB PDF called 2SD1330_E, likely the datasheet for the 2SD1330 NPN low-frequency bipolar transistor under JIS numbering, though it is catalogued as a…

PDF for the 2SC4417 carrying an _E suffix whose meaning the name does not explain, sized 40.7 KB.

PDF of 41.0 KB titled 2SC4968 with an _E suffix whose meaning the name does not state. It is listed among schematics, but the 2SC prefix follows the JIS/JEITA…

Component datasheet for the 2SB1644, a small 48 KB PDF catalogued under schematics. JIS numbering places any 2SB part among PNP bipolar transistors for low-frequency…

Catalogued as a schematic, this 40.7 KB PDF is named after the 2SA1540, a Japanese JIS-registered transistor part number, so it is most likely the component datasheet.

A 41.5 KB PDF for the 2SB970 transistor, with an _E suffix the file name leaves unexplained.

A 46.1 KB PDF datasheet covering the 2N3019 transistor, indexed in the schematic category.

The file name gives the part number 1SS365 and nothing more, and at 49.2 KB the PDF is the size of a typical short component data sheet.

IBM ThinkPad X61 schematic in PDF format, approximately 1.42 MB. The file name gives only the model, without a board number, revision or chipset detail, so check the…

Spanish PDF, 474 KB, titled CDMA and FSK and numbered 5, apparently a chapter in a communications course.

Spanish PDF on powering on a Chestnut without a screen, 1.46 MB. Chestnut is commonly used as the code name for the Xiaomi Redmi 2 Prime, though the name itself names no…

Touchscreen section of the Samsung Galaxy A30s (SM-A30S) service schematic, delivered as a 4.30 MB PDF.

Backlight circuit page from the Samsung SM-A30S schematic, stored as a 4.29 MB PDF. It covers the display lighting driver, typically the boost converter, inductor, diode…

BM5070 schematic as a 2.45 MB PDF, with the name giving only this code and no brand, model or revision.

Schematic in PDF format, 4.02 MB, for the motherboard numbered 203013-1, a pattern typical of Wistron designs; the name gives no laptop brand or model.

Schematic PDF for the Samsung Galaxy A60, model SM-A6060, inside a 1.49 MB RAR archive. No board revision appears in the name.

Schematic in PDF form for a Quanta-designed board labelled H97M, board number DAH97MMBAC0, packed in a 1.40 MB RAR archive.

SMD marking code reference in PDF form, 11.4 MB. Books of this type list the short codes printed on surface-mount transistors, diodes, regulators and other small…

Full schematic set for the Samsung Galaxy A01, model SM-A015M, the Latin American variant, packed as a ZIP of about 11.4 MB.

Schematic for the Jetway I61MG4 motherboard, revision 1.0, delivered as a 459 KB RAR archive.

PDF schematic for the Jetway 601TCF motherboard, about 414 KB, with no revision number stated.

Wistron JE40-HR schematic, revision R1.0, archived as a 1.46 MB RAR. The name gives no laptop brand or model, so match the board through the JE40-HR code on the PCB.

A PDF collection of fun basic electronic projects, filed under schematics and 406 KB in size.

Quanta UT12 laptop board schematic at revision 1A, a 2.40 MB PDF. Beyond the project code and revision the name lists nothing about the laptop brand, platform or…

PDF titled only with the part number D304X, about 489 KB, filed as a schematic. The name gives no further detail on device type or manufacturer, so the contents are most…