Small archive of measurement references for laptop motherboards, apparently from an NB_parts collection.

Datasheet for the HCF4017, the CMOS decade counter and divider with ten decoded outputs, provided as a 380 KB PDF.

Datasheet PDF, 137 KB, for the 2SD1841, part of the Japanese 2SD range of NPN bipolar transistors, catalogued here under schematics.

Reference sheet for the 2SD2116 NPN transistor, supplied as a 74 KB PDF. Its name follows the Japanese JIS 2SD convention and carries nothing beyond the part number.

Specification sheet in PDF, around 82 KB, for the 2SD1781K NPN transistor of the JIS 2SD series; the K suffix denotes a specific version of the base part.

The 3SK304 is covered by this 25.9 KB PDF, listed as a schematic though it is expected to be a component datasheet.

The 3SK270 semiconductor is described in this 32.7 KB PDF, listed as a schematic although the content is expected to be a part datasheet.

An 80.6 KB PDF named after the 3SK265, filed under schematics but most likely a datasheet for that single device.

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 for the 2SD2387 in PDF form, 178 KB, catalogued under schematics. The JIS prefix 2SD denotes an NPN bipolar transistor of the low-frequency family.

Datasheet PDF of 45.2 KB for the 2SK3280, categorised here as a schematic. The 2SK prefix indicates an N-channel field-effect transistor according to JEITA naming.

PDF reference for the 2SK2993 transistor, 424 KB. The file name carries only the part number, which under the JIS scheme denotes an N-channel field-effect transistor, so…

Datasheet in PDF form for the 2SK2962, 385 KB in size and catalogued as a schematic. The 2SK series denotes N-channel FETs registered under the Japanese JIS scheme, so…

The 2SK2530 is covered by this 42.5 KB PDF document, catalogued under schematics. According to Japanese JIS numbering, 2SK marks an N-channel field-effect transistor…

Lowercase-named PDF of 136 KB covering the 2SK2503, catalogued as a schematic though it relates to a single transistor.

A 134 KB PDF identified solely as 2SK2219, placed in the schematic category but most likely a transistor datasheet.

Covering the 2SK1828, this 319 KB PDF is catalogued as a schematic but is most likely the component datasheet.

2SK1423 component data in a 105 KB PDF, entered in the index as a schematic. Japanese JIS naming uses the 2SK prefix for N-channel FETs, but the name gives no maker…

Here the 2SK1422 transistor is documented in a 103 KB PDF filed under schematics, though content is most likely a datasheet rather than a board diagram.

The 2SJ619 is the subject of this 314 KB PDF, indexed as a schematic though the naming suggests a component datasheet.

The 2SJ609 is documented in this 30.0 KB PDF, listed under schematics but named in the manner of a component datasheet.

PDF of 56.2 KB named 2SD1391, a JIS designation for an NPN low-frequency bipolar transistor, and presumably its datasheet although indexed under schematics.

Listed under schematics, this 110 KB PDF is named for the 2SD1347, an NPN bipolar transistor in the Japanese JIS 2SD series, and is probably its datasheet.

Datasheet-type PDF of 47.9 KB for the 2SD894, placed under schematics. The name holds only the part number, which follows JIS conventions where 2SD indicates an NPN…

For the 2SD893, this 53.8 KB PDF includes an _E suffix in its name whose meaning is not given.

The 2SC4527 data sheet, a 310 KB PDF filed under schematics but in practice a component specification.

Reference sheet for transistor 2SC4474, supplied as a 109 KB PDF and listed among schematics.

For the 2SC5107 transistor, this 242 KB PDF is categorised as a schematic, though the bare part-number name points to a datasheet.

PDF reference for the 2SC4248 transistor, 300 KB in size. Beyond the part number the file name gives no information about manufacturer, package or revision.

Sized at 316 KB, this PDF covers the 2SC5422, a part number in the Japanese JIS series used for NPN bipolar transistors.

A 79.7 KB PDF for the 2SC3950 transistor, placed in the schematic category though the part-number name indicates a component datasheet.

A 40.9 KB PDF titled 2SC3937 with the _E suffix often used for English versions of Japanese datasheets, listed here under schematics.

Specification sheet in PDF, 84.7 KB, for the 2SC3895 part. JIS numbering reserves the 2SC prefix for NPN bipolar transistors, so this is likely the device datasheet; no…

Reference PDF of 97.9 KB for the 2SC3675, an NPN transistor according to its JIS 2SC prefix, catalogued as a schematic. No suffix or revision appears in the file name.

The 2SC3666 is documented here in a 175 KB PDF. Following JIS semiconductor naming, 2SC designates an NPN bipolar transistor, and since the name holds only the part…

A 349 KB PDF named for the 2SC2670 transistor and catalogued as a schematic, most likely containing the device datasheet. JIS 2SC numbering identifies NPN bipolar parts.

Here is a 157 KB PDF named after the 2SA1479, filed as a schematic yet most likely a transistor data sheet. Under JIS rules, 2SA denotes PNP polarity.

A 210 KB PDF for the 2SB905 transistor, part of a consecutive 2SB900-series group in this index.

Datasheet-style PDF, 120 KB in size, describing the 2SA1418 transistor and placed under the schematic category.

PDF datasheet of 42.8 KB for the 2SA1011 transistor, catalogued in the schematic category though it is really component reference data.