Schematic diagrams for the Nokia 770 Internet Tablet, named N770 in the file, provided as a 901 KB PDF.

Nokia E66 slider phone schematics in a 979 KB PDF. The name gives the model only, with no board number or revision, so match the main board label against the drawings…

Circuit schematic for the classic Nokia 6210 handset, saved as a 779 KB PDF document. For older phones like this, diagrams are especially useful because replacement…

Schematic for the Nokia 6280 slider phone, provided as a 987 KB PDF file. The pages let a technician follow supply voltages out of the power management chip, check the…

Circuit diagram for the ThinkPad T43, supplied as a 1.68 MB PDF. The file name carries no board number or revision, so the exact design version has to be confirmed…

Schematic in PDF, 1.68 MB, for the SM6125 processor with an SM61 family tag; the phone model and board number are absent from the name.

Schematic archive named only M33, with no brand given, a 940 KB ZIP. The name is too brief to identify the device reliably; it may be a phone model code, but that is not…

PDF reference for the 2SD1852, a 2SD-series NPN bipolar transistor, about 96.5 KB and more likely a component datasheet than a circuit diagram.

Datasheet for the 4N38 optocoupler, marked as revision 2 in the name and supplied as a 294 KB PDF filed among schematics.

Revision 5 of a datasheet for the 4N25 optocoupler, a 281 KB PDF. The 4N25 is one of the oldest and most common phototransistor-output isolators, often found in power…

Datasheet-style document, 133 KB in PDF format, covering the 2SD1681 part number and listed as a schematic.

A compact 30.6 KB PDF tied to the 2SD1666 part number, catalogued among schematics. In Japanese JIS designations, 2SD stands for an NPN bipolar transistor meant for…

PDF reference, 67.1 KB, for the 2SD1627 transistor, stored in the schematic section. The name carries nothing besides the part number.

A 53.3 KB PDF for the 2SD2071, with an E suffix in the name whose meaning is not stated.

Covering the 2SD2067, this 60 KB PDF carries an E suffix that the name leaves unexplained.

Larger 185 KB PDF for the 2SD2012, written in lowercase in the name and placed among schematics.

Very small 22.2 KB PDF relating to the 2SD1999, filed as a schematic. The name offers nothing but the part code, which follows the JIS scheme where 2SD denotes an NPN…

An 88.2 KB PDF titled 2SD1884, indexed in the schematic section but, judging by the bare part number, a datasheet for that transistor.

Reference sheet in PDF form (32.2 KB) for the 2SK3414LS, listed in the schematic section of the index.

Part datasheet, most likely, for the 2SK2837, provided as a 426 KB PDF and indexed as a schematic.

Component sheet for the 2SK2614, delivered as a 172 KB PDF. Within JIS numbering, 2SK marks an N-channel field-effect transistor, so the document presents ratings…

Largest of this group at 382 KB, this PDF documents the 2SK1930, an N-channel field-effect transistor under Japanese JIS numbering.

Datasheet-style PDF for the 2SK1907, 96.9 KB, filed as a schematic. JIS numbering assigns the 2SK prefix to N-channel field-effect transistors, so this covers a single…

A compact 91.9 KB PDF for the 2SK1733 transistor. Under Japanese JIS/JEITA part numbering, 2SK denotes an N-channel FET, so expect a component datasheet with ratings…

Component reference for the 2SK1214 N-channel MOSFET, a 34.3 KB PDF in the Japanese 2SK family.

The 2SK657 datasheet, filed as a schematic, is a 35.7 KB PDF; the 2SK prefix identifies an N-channel FET in the Japanese semiconductor numbering scheme.

This 89.0 KB PDF carries no information except the code 2SJ233. JIS numbering assigns 2SJ to P-channel FETs, so the content is most likely that transistor's datasheet…

PDF of 104 KB for the 2SD1238L, catalogued as a schematic. The 2SD prefix is the JIS marking for NPN transistors in low-frequency applications, and the trailing L…

The 2SD1212 is the subject of this 120 KB PDF, filed as a schematic. Based on the Japanese JIS numbering, 2SD marks an NPN transistor meant for low-frequency circuits…

The 2SD1061 is the subject of this 102 KB PDF, placed in the schematic section though it reads as a part datasheet.

PDF reference of 143 KB named only for the 2SC4729. The 2SC prefix is the JIS code for an NPN bipolar transistor, so the catalogue label of schematic most likely stands…

Named 2SC4599, this 129 KB PDF is filed with schematics but reads as a part-number datasheet for a JIS-designated device, where 2SC means an NPN bipolar transistor for…

Part reference for the 2SC4577, provided as a 106 KB PDF under the schematic type. With the JIS 2SC prefix denoting a high-frequency NPN bipolar transistor, the content…

PDF for the 2SC5584 transistor, only 45.9 KB, catalogued under schematics. The name holds nothing beyond the part number, so manufacturer and revision are not given.

106 KB PDF tied to the 2SC4204 transistor, with no other information in the file name. The JEITA 2SC prefix denotes an NPN bipolar device, so despite the schematic label…

A compact 42.3 KB PDF named after the 2SC5444 transistor. Under JIS numbering, 2SC denotes an NPN bipolar device intended mainly for high-frequency use, so this is…

For the 2SC5439 transistor, this 192 KB PDF is most likely a manufacturer datasheet, given that 2SC is the JIS designation for NPN bipolar parts.

A compact 32.5 KB PDF tied to the 2SC3918 transistor. The 2SC prefix is the JIS designation for an NPN bipolar device, so the content is most likely the manufacturer…

Reference sheet for the 2SC4805 NPN transistor, stored as a compact PDF of about 40 KB with an _E suffix that probably indicates an English edition.

Datasheet-style document for the 2SC3778 NPN transistor, stored as a 126 KB PDF under the schematic label.