• Name Type Board Source Added Size
  • 2SD2413 E

    Catalogued as a schematic, the 40.9 KB PDF 2SD2413 with an E tag relates, by the JIS 2SD prefix, to an NPN bipolar transistor rather than a complete board.

    Schematic · 40.9 KB · 2 Aug 2026
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    40.9 KB
  • 2SD1996 E

    PDF document of 49.5 KB named 2SD1996 followed by an E tag, filed under schematics. The 2SD prefix is the Japanese JIS designation for an NPN bipolar transistor, so this…

    Schematic · 49.5 KB · 2 Aug 2026
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    49.5 KB
  • 2SD1995 E

    PDF document for the 2SD1995 semiconductor, catalogued under schematics but by its name a component datasheet.

    Schematic · 45.5 KB · 2 Aug 2026
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    45.5 KB
  • 2SD1994A E

    Datasheet-style PDF for the 2SD1994A transistor, filed in the schematic category of the index.

    Schematic · 54.7 KB · 2 Aug 2026
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    54.7 KB
  • 2SD1993 E

    Component reference for the 2SD1993, a 45.5 KB PDF listed among schematics. Following Japanese JIS part numbering, 2SD identifies an NPN bipolar transistor of the…

    Schematic · 45.5 KB · 2 Aug 2026
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    45.5 KB
  • 2SD1992A E

    PDF for the 2SD1992A NPN transistor, indexed as a schematic though the name points to a part datasheet.

    Schematic · 52.8 KB · 2 Aug 2026
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    52.8 KB
  • 2SD1991A E

    Short 54.7 KB PDF for the 2SD1991A, an NPN bipolar transistor going by its JIS 2SD prefix. The index lists it under schematics.

    Schematic · 54.7 KB · 2 Aug 2026
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    54.7 KB
  • 2SD1981

    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…

    Schematic · 71.2 KB · 2 Aug 2026
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    71.2 KB
  • 2SD1979 E

    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…

    Schematic · 42.4 KB · 2 Aug 2026
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    42.4 KB
  • 2SD1958

    Specification sheet, 85.3 KB in PDF form, for the 2SD1958 NPN transistor, indexed in the schematic section.

    Schematic · 85.3 KB · 2 Aug 2026
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    85.3 KB
  • 2sd1957

    Small 40.1 KB PDF for the 2SD1957, written in lower case in the original name and catalogued under schematics.

    Schematic · 40.1 KB · 2 Aug 2026
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    40.1 KB
  • 2SD2406

    PDF datasheet for the 2SD2406 transistor, a larger 176 KB file in the schematic category.

    Schematic · 176 KB · 2 Aug 2026
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    176 KB
  • 2sd2396

    Component data for the 2sd2396, supplied as a 42.0 KB PDF and indexed under schematics.

    Schematic · 42.0 KB · 2 Aug 2026
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    42.0 KB
  • 2sd2394

    The 2sd2394 NPN transistor is covered by this 53.3 KB PDF, which the index files as a schematic.

    Schematic · 53.3 KB · 2 Aug 2026
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    53.3 KB
  • 2SD2387

    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.

    Schematic · 178 KB · 2 Aug 2026
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    178 KB
  • 2SD2386

    A 173 KB PDF covering the 2SD2386, an NPN bipolar transistor by its JIS 2SD designation, listed in the schematic section.

    Schematic · 173 KB · 2 Aug 2026
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    173 KB
  • 2SD2385

    Reference sheet for the 2SD2385 transistor, delivered as a 180 KB PDF and indexed under schematics.

    Schematic · 180 KB · 2 Aug 2026
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    180 KB
  • 2SD2384

    PDF of 176 KB for the 2SD2384, an NPN bipolar transistor going by its JIS 2SD prefix, filed as a schematic in this index.

    Schematic · 176 KB · 2 Aug 2026
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    176 KB
  • 2SD2359 E

    Compact 39.6 KB PDF for the 2SD2359, catalogued among schematics but by its name a transistor datasheet.

    Schematic · 39.6 KB · 2 Aug 2026
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    39.6 KB
  • 2SD2357 E

    Datasheet for the 2SD2357 NPN transistor, 39.8 KB in PDF format and filed under schematics.

    Schematic · 39.8 KB · 2 Aug 2026
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    39.8 KB
  • 2SD2353

    A 201 KB PDF for the 2SD2353, indexed in the schematic category, though the part number points to a component datasheet.

    Schematic · 201 KB · 2 Aug 2026
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    201 KB
  • 2SD1525

    Reference PDF, 170 KB, for the 2SD1525 transistor, listed under schematics. Japanese JIS designation 2SD identifies an NPN bipolar device meant for low-frequency work.

    Schematic · 170 KB · 2 Aug 2026
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    170 KB
  • 2SD1512 E

    Datasheet PDF for the 2SD1512, 40.8 KB, catalogued in the schematic section. The JIS prefix 2SD denotes an NPN bipolar transistor of the low-frequency type, and the E…

    Schematic · 40.8 KB · 2 Aug 2026
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    40.8 KB
  • 2SD1511 E

    The 2SD1511 NPN transistor is the subject of this 56.9 KB PDF, filed under schematics in the index. JIS numbering assigns 2SD to low-frequency NPN bipolar parts.

    Schematic · 56.9 KB · 2 Aug 2026
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    56.9 KB
  • 2SD1509

    PDF datasheet of 185 KB for the 2SD1509 transistor, indexed as a schematic. Under the Japanese JIS scheme, the 2SD prefix marks an NPN bipolar device for low-frequency…

    Schematic · 185 KB · 2 Aug 2026
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    185 KB
  • 2SD1508

    Largest sheet in this group at 217 KB, a PDF for the 2SD1508 NPN transistor, filed under schematics. The JIS 2SD designation covers low-frequency NPN bipolar parts.

    Schematic · 217 KB · 2 Aug 2026
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    217 KB
  • 2SD1478 E

    Component datasheet in PDF form, 57.8 KB, for the 2SD1478, though the index files it under schematics.

    Schematic · 57.8 KB · 2 Aug 2026
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    57.8 KB
  • 2SD1459

    Indexed as a schematic, this PDF is named 2SD1459, a Japanese JIS designation that points to a datasheet for an NPN transistor rather than a board diagram.

    Schematic · 122 KB · 2 Aug 2026
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    122 KB
  • 2SD1458 E

    A small 41.5 KB PDF for the 2SD1458, a part number in the Japanese JIS scheme where 2SD identifies an NPN low-frequency transistor.

    Schematic · 41.5 KB · 2 Aug 2026
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    41.5 KB
  • 2sd1458

    Another copy of documentation for the 2SD1458 NPN transistor, stored as a 48.8 KB PDF under a lowercase file name.

    Schematic · 48.8 KB · 2 Aug 2026
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    48.8 KB
  • 2sd1455

    The name 2sd1455 refers to a JIS-registered NPN transistor, and this 53.0 KB PDF is most likely its manufacturer datasheet, although the index lists it as a schematic.

    Schematic · 53.0 KB · 2 Aug 2026
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    53.0 KB
  • 2SD1953

    Filed under schematics, this 74.1 KB PDF is named after the 2SD1953, which in Japanese JIS numbering is an NPN transistor for low-frequency applications.

    Schematic · 74.1 KB · 2 Aug 2026
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    74.1 KB
  • 2sd1949

    A compact 36.0 KB PDF for the 2SD1949 transistor. The 2SD prefix in the JIS system designates an NPN device for low-frequency circuits, so the content is expected to be…

    Schematic · 36.0 KB · 2 Aug 2026
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    36.0 KB
  • 2SD1947A

    The 232 KB PDF covers the 2SD1947A, a JIS NPN transistor number with an A suffix that the name states.

    Schematic · 232 KB · 2 Aug 2026
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    232 KB
  • 2SD1940

    Datasheet-style PDF of 83.8 KB named for the 2SD1940, an NPN transistor under Japanese JIS numbering, in which 2SD stands for NPN low-frequency types.

    Schematic · 83.8 KB · 2 Aug 2026
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    83.8 KB
  • 2SD1937 E

    The 2SD1937 transistor is the subject of this 42.0 KB PDF, whose name ends with an _E suffix that is not explained.

    Schematic · 42.0 KB · 2 Aug 2026
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    42.0 KB
  • 2SD1936

    Stored as a 190 KB PDF, this document is named after the 2SD1936, a JIS-registered NPN transistor.

    Schematic · 190 KB · 2 Aug 2026
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    190 KB
  • 2SD1935

    A 133 KB PDF for the 2SD1935, a transistor in the Japanese 2SD family, which the JIS standard reserves for NPN low-frequency devices.

    Schematic · 133 KB · 2 Aug 2026
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    133 KB
  • 2SD1934 E

    Named 2SD1934 with an _E suffix, this 40.2 KB PDF is most likely the datasheet for that NPN transistor, since 2SD is the JIS prefix for NPN low-frequency types.

    Schematic · 40.2 KB · 2 Aug 2026
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    40.2 KB
  • 2SD1913

    At only 34.4 KB, this PDF is a short reference for the 2SD1913 transistor. Under Japanese JIS part numbering the 2SD prefix identifies an NPN device for low-frequency…

    Schematic · 34.4 KB · 2 Aug 2026
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    34.4 KB

About schematics

A schematic is the electrical drawing of a board: it shows how every chip, MOSFET, coil and connector is wired, which rail feeds which circuit, and what voltage or resistance you should measure at each test point. It is the document you need to trace a missing rail or a short.

Schematics are published per board, not per laptop model. The same Compal LA-E891P board can sit in several HP models, so always search by the board number printed on the PCB rather than by the sticker on the case.