Catalogued as a schematic, the 1SR139 document comes as a 117 KB PDF whose name mentions 400 and 600 variants, so it likely covers two grades of one discrete part.

Code 52CPQ030 is the only information in the name of this 69.9 KB PDF, which is filed under schematics. No laptop model or board number is mentioned.

Short code 33C804A names this 174 KB PDF, indexed as a schematic, with no device, brand or revision indicated.

PDF of 96.4 KB labelled 30CTQ060L, a part-number style name that points to a component datasheet rather than a laptop or motherboard schematic.

Short PDF of about 104 KB on the 24LC08 serial EEPROM, an 8 Kbit memory with a two-wire I2C interface.

Datasheet PDF of 121 KB for the 24C65, a 64 Kbit I2C serial EEPROM with smart features such as a high-endurance block and configurable write protection of memory…

Reference PDF of 310 KB labelled with the 24C32 part number, which corresponds to a 32 Kbit (4 KB) I2C serial EEPROM.

Indexed as a schematic, this 86.1 KB PDF is named simply 21DQ04 and names no device, board or revision.

Reference sheet in PDF for the RJH60F7, an IGBT the file name rates at 50 A and 600 V. Devices of this type turn up in induction heating appliances, inverter welders and…

A 43.6 KB PDF for the 3N247, filed among schematics but named after a discrete component, so it is most likely a datasheet.

The name 3LP01S identifies this 28.1 KB PDF only by a component-style code with an S suffix; no laptop, board number or revision appears.

Listed as a schematic, this PDF of 28.2 KB is named 3LP01M and carries nothing beyond that part-style code with an M suffix.

The 2SD2285 is documented in this 128 KB PDF. Its JIS part number, with the 2SD prefix, places it among NPN transistors intended for low-frequency circuits such as…

A compact 44.5 KB PDF labelled 2SJ520 and catalogued as a schematic. Because 2SJ is the JIS prefix for P-channel FETs, the document is best treated as a short datasheet…

The name of this 97.3 KB PDF gives nothing beyond 2SJ277, a JIS-style designation in which 2SJ marks a P-channel FET.

Named after the JIS part number 2SJ267, this 91.8 KB PDF most likely documents a P-channel field-effect transistor, since the 2SJ prefix denotes that device class.

An 88.2 KB PDF carrying only the part number 2SC4125, filed as a schematic though it is most likely a component datasheet.

The 2SC5777 is covered by this small 29.9 KB PDF, catalogued as a schematic but most likely a single-part datasheet.

PDF of 37.3 KB named after the 2SC5406 and listed as a schematic, though it is almost certainly a component datasheet.

Part documentation for the 2SC5302 in PDF form, 89.2 KB, placed in the schematic section of the index.

A brief 48.3 KB PDF on the 2SC3504, catalogued as a schematic but containing transistor data.

Filed under schematics, this compact 39.7 KB PDF is named after the 2SB976 part number, a Japanese JIS-style designation where the 2SB prefix marks a PNP transistor…

PDF of 61.5 KB for the 2SA1870, with a 1-2 tag in the name. That tag may indicate one part of a split document or a revision, but the name does not say which.

PDF, 52.3 KB, documenting the 2SA1177, a PNP bipolar transistor in the JIS 2SA numbering scheme.

A compact PDF of 48 KB filed under schematics, named after the part 2PB1219A with a trailing 3 that probably marks a document issue.

Short PDF, 26.4 KB, named 2pg301 and placed in the schematic category alongside related 2pg files.

PDF of 47.7 KB named 2PD602A, apparently issue 4 of the document. The name identifies a part rather than a product or board, which points to a discrete semiconductor…

PDF of about 104 KB on the 24LC16 serial EEPROM, a 16 Kbit two-wire memory device. The name gives no revision or package detail, so treat it as general part…

Filed under schematics at 212 KB, the PDF named 20ETF-S gives no device, board or revision details.

Section 3.2 of a Spanish repair course dealing with the bench power supply, a 244 KB PDF. No specific supply model is named.

Small 37.9 KB PDF for the 74HC4050, a hex non-inverting buffer from the high-speed CMOS family, often used as a level shifter because its inputs can accept voltages…

PDF covering the HEF4094B, an 8-stage shift-and-store bus register from the 4000-series CMOS logic family, listed as a schematic and 199 KB in size.

Compact 29.5 KB PDF for the 2SC3678, catalogued under schematics, with only the part number in the name.

Component-style code 3LN02N is all the name of this 28.0 KB PDF provides; it is catalogued as a schematic but mentions no device, brand or motherboard number.

A small 51.5 KB PDF carrying the part number 2sc5147, catalogued as a schematic but almost certainly a component datasheet for that NPN transistor.

Here is a 42.1 KB PDF on the 2SC3707 transistor, listed in the schematic category. The trailing E after the part number is not explained in the name and should be read…

Component document in PDF form, 47 KB, named 2PA1774 with a suffix 2 that likely denotes the sheet issue.

Here is a 570 KB PDF catalogued as a schematic whose name is simply 28010, without any brand or board identifier.

At only 53.7 KB, this PDF named 85hq is listed as a schematic and carries no brand or board information.

Only the part-like code 35scgq030 describes this 46.6 KB PDF, filed as a schematic. No laptop model, brand or board revision is indicated, so it is best treated as a…