• Name Type Board Source Added Size
  • 2SC4483

    Covering the 2SC4483, this 126 KB PDF is a semiconductor data sheet; the 2SC prefix follows JIS rules for NPN bipolar transistors.

    Schematic · 126 KB · 1 Aug 2026
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    126 KB
  • 2SC4482

    PDF datasheet of 96.7 KB for the 2SC4482, an NPN bipolar transistor according to Japanese JIS designation.

    Schematic · 96.7 KB · 1 Aug 2026
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    96.7 KB
  • 2SC4481

    A 144 KB PDF specification for the 2SC4481 transistor, filed as a schematic but in fact a component datasheet.

    Schematic · 144 KB · 1 Aug 2026
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    144 KB
  • 2SC4480

    Datasheet for the 2SC4480, stored as a 99.8 KB PDF that opens in any standard reader. By JIS convention the 2SC prefix denotes an NPN bipolar transistor; the name gives…

    Schematic · 99.8 KB · 1 Aug 2026
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    99.8 KB
  • 2SC4479

    Filed under schematics, this 244 KB PDF is named after the part number 2SC4479, which follows the Japanese JIS scheme where the 2SC prefix marks an NPN bipolar…

    Schematic · 244 KB · 1 Aug 2026
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    244 KB
  • 2SC4476

    A compact 93.8 KB PDF carrying only the designation 2SC4476 in its name. Under JIS numbering the 2SC prefix identifies an NPN transistor of the high-frequency class, so…

    Schematic · 93.8 KB · 1 Aug 2026
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    93.8 KB
  • 2SC4475

    Datasheet-style PDF of 88.2 KB for the semiconductor 2SC4475, catalogued in the schematic section.

    Schematic · 88.2 KB · 1 Aug 2026
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    88.2 KB
  • 2SC4474

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

    Schematic · 109 KB · 1 Aug 2026
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    109 KB
  • 2SC4473

    The part number 2SC4473 is the only information in this 122 KB PDF name, and it identifies a Japanese JIS-coded NPN transistor of the high-frequency type.

    Schematic · 122 KB · 1 Aug 2026
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    122 KB
  • 2SC4461

    Listed as a schematic, this 103 KB PDF is titled with the device code 2SC4461. In the JIS semiconductor naming scheme, 2SC stands for an NPN bipolar transistor meant for…

    Schematic · 103 KB · 1 Aug 2026
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    103 KB
  • 2SC4460

    Component documentation for 2SC4460 in a 108 KB PDF file. The number follows Japanese JIS registration, where the 2SC prefix denotes an NPN transistor for high-frequency…

    Schematic · 108 KB · 1 Aug 2026
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    108 KB
  • 2SC4459

    A 106 KB PDF named only 2SC4459, placed in the schematic category of the index. That JIS-style code marks an NPN bipolar transistor designed for high-frequency…

    Schematic · 106 KB · 1 Aug 2026
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    106 KB
  • 2SC4458

    Transistor 2SC4458 is the subject of this 103 KB PDF, which the catalogue lists as a schematic.

    Schematic · 103 KB · 1 Aug 2026
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    103 KB
  • 2SC4457

    Stored as a 102 KB PDF, this document bears the semiconductor designation 2SC4457 and nothing more.

    Schematic · 102 KB · 1 Aug 2026
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    102 KB
  • 2SC4455

    Datasheet candidate for the 2SC4455 transistor, a 100 KB PDF although filed with schematics.

    Schematic · 100 KB · 1 Aug 2026
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    100 KB
  • 2SC4454

    Part number 2SC4454 gives this 101 KB PDF its name, and the index places it in the schematic group.

    Schematic · 101 KB · 1 Aug 2026
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    101 KB
  • 2SC4453

    At only 34.3 KB, this PDF for 2SC4453 is probably a short datasheet of a page or two, even though it is catalogued as a schematic.

    Schematic · 34.3 KB · 1 Aug 2026
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    34.3 KB
  • 2SC4452

    Named after transistor 2SC4452, this 98.8 KB PDF is listed as a schematic but most likely contains the component datasheet.

    Schematic · 98.8 KB · 1 Aug 2026
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    98.8 KB
  • 2SC4451

    A 90.4 KB PDF identified solely by the code 2SC4451. Under Japanese JIS semiconductor naming, the 2SC prefix marks an NPN transistor of the high-frequency type, so this…

    Schematic · 90.4 KB · 1 Aug 2026
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    90.4 KB
  • 2SC4450

    Documentation for the 2SC4450 semiconductor arrives as an 86.3 KB PDF in the schematic listing.

    Schematic · 86.3 KB · 1 Aug 2026
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    86.3 KB
  • 2SC4449

    The smaller 77.9 KB PDF here carries the type number 2SC4449, indexed as a schematic but almost certainly a component datasheet.

    Schematic · 77.9 KB · 1 Aug 2026
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    77.9 KB
  • 2SC4448

    Larger than most in this series at 211 KB, the PDF for 2SC4448 may include characteristic graphs alongside the ratings tables.

    Schematic · 211 KB · 1 Aug 2026
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    211 KB
  • 2SC4446

    Transistor reference for part 2SC4446, a 143 KB PDF classed as a schematic. Japanese JIS registration gives the 2SC prefix to NPN bipolar devices designed for…

    Schematic · 143 KB · 1 Aug 2026
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    143 KB
  • 2SC4443

    A 152 KB PDF titled with the device number 2SC4443 and grouped among schematics. In the JIS scheme, codes starting with 2SC refer to NPN transistors for high-frequency…

    Schematic · 152 KB · 1 Aug 2026
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    152 KB
  • 2SC4441

    Indexed as a schematic, this 101 KB PDF is named for the semiconductor 2SC4441. The 2SC portion is a JIS designation for NPN bipolar transistors of the high-frequency…

    Schematic · 101 KB · 1 Aug 2026
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    101 KB
  • 2SC4440

    Part code 2SC4440 is all the 97.3 KB PDF name reveals, and the catalogue places it under schematics.

    Schematic · 97.3 KB · 1 Aug 2026
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    97.3 KB
  • 2SC4439

    At 235 KB this PDF for 2SC4439 is one of the more detailed files in the set, likely carrying graphs as well as rating tables.

    Schematic · 235 KB · 1 Aug 2026
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    235 KB
  • 2SC4438

    Datasheet-type PDF of 132 KB covering transistor 2SC4438, filed with the schematics in this index.

    Schematic · 132 KB · 1 Aug 2026
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    132 KB
  • 2SC4437

    A 91.7 KB PDF bearing the JIS part number 2SC4437, catalogued as a schematic. The 2SC prefix classifies it as an NPN bipolar transistor for high-frequency use, so the…

    Schematic · 91.7 KB · 1 Aug 2026
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    91.7 KB
  • 2SC4435

    PDF document for the 2SC4435, catalogued as a schematic but named after a discrete semiconductor part number rather than a board.

    Schematic · 92.2 KB · 1 Aug 2026
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    92.2 KB
  • 2SC4433

    Part-number reference for the 2SC4433 in PDF form, about 71.5 KB. The name gives no board or device, only the JIS designation, where 2SC denotes an NPN bipolar…

    Schematic · 71.5 KB · 1 Aug 2026
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    71.5 KB
  • 2SC4432

    A compact 24.0 KB PDF titled only with the part number 2SC4432, filed under schematics.

    Schematic · 24.0 KB · 1 Aug 2026
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    24.0 KB
  • 2SC4430

    Datasheet-style PDF named for the 2SC4430, sized 108 KB and listed as a schematic in the index.

    Schematic · 108 KB · 1 Aug 2026
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    108 KB
  • 2SC4429

    The 2SC4429 is the only information carried by this 107 KB PDF name. Following Japanese JIS semiconductor numbering, 2SC stands for an NPN bipolar transistor, so the…

    Schematic · 107 KB · 1 Aug 2026
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    107 KB
  • 2SC4428

    PDF reference for transistor part 2SC4428, 107 KB, indexed under the schematic category.

    Schematic · 107 KB · 1 Aug 2026
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    107 KB
  • 2SC4427

    Named simply 2SC4427, this 109 KB PDF documents a single semiconductor rather than a complete board.

    Schematic · 109 KB · 1 Aug 2026
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    109 KB
  • 2SC4426

    A 105 KB PDF covering the 2SC4426, filed as a schematic although the name is a component number.

    Schematic · 105 KB · 1 Aug 2026
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    105 KB
  • 2SC4425

    Component documentation for the 2SC4425 in a 102 KB PDF. The JIS prefix 2SC denotes an NPN bipolar transistor, which points to datasheet content rather than a device…

    Schematic · 102 KB · 1 Aug 2026
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    102 KB
  • 2SC4424

    PDF file of roughly 104 KB identified only by the part number 2SC4424. Under the Japanese JIS numbering scheme, 2SC parts are NPN bipolar transistors, so the document…

    Schematic · 104 KB · 1 Aug 2026
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    104 KB
  • 2SC4423

    The 2SC4423 is described by this 102 KB PDF, which the index lists as a schematic. Since 2SC is the JIS prefix for NPN bipolar transistors, the contents should be a…

    Schematic · 102 KB · 1 Aug 2026
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    102 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.