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

Small 56.9 KB PDF for the 2SD1679, with an extra E suffix in the name that is not explained further.

Part reference for the 2SD1669, supplied as a 107 KB PDF and filed in the schematic section.

Covering the 2SD1668, this 104 KB PDF is listed as a schematic, though the name is a discrete transistor code.

Transistor documentation for the 2SD1667, 136 KB in PDF format. Nothing beyond the part number appears in the name.

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 of 119 KB for the 2SD1664, written in lowercase in the original name and filed as a schematic.

Reference document for the 2SD1662 transistor, 137 KB, PDF format, placed in the schematic category.

At 198 KB, the PDF for the 2SD1658 is one of the larger sheets in this group, though it still names only the part.

Datasheet PDF, 60 KB, for the 2SD1650, with the name given in lowercase and filed under schematics.

Part documentation for the 2SD1631, a 162 KB PDF listed as a schematic. JIS designation 2SD indicates an NPN bipolar transistor designed for low-frequency or power…

The 2SD1628 is covered in this 88.3 KB PDF, catalogued with schematics though it relates to a single transistor.

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

Transistor sheet for the 2SD1626, 87.9 KB in PDF format, filed as a schematic. In JIS codes, 2SD denotes an NPN bipolar device for low-frequency or power circuits.

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.

Part datasheet in PDF form, 105 KB, for the 2SD2050 transistor, filed in the schematic category. The name holds only the part code.

The 2SD2049 is documented in this 131 KB PDF, catalogued as a schematic. In the JIS system, 2SD stands for an NPN bipolar transistor aimed at low-frequency or power…

Transistor reference for the 2SD2048, 78.9 KB, in PDF format and listed among schematics.

PDF document for the 2SD2028, 91.1 KB, filed in the schematic category. Only the part number is given.

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…

Small PDF of 92.1 KB filed under schematics, though its name is simply the part number 2SD1998, so it is almost certainly a component datasheet rather than a board…

Labelled 2SD1997, this 86.1 KB PDF is indexed as a schematic, yet a bare transistor part number points to a manufacturer datasheet.

A 115 KB PDF named after the 2SD1625 part number, catalogued as a schematic but in practice most likely the transistor's datasheet.

Document for the 2SD1624, a PDF of 144 KB stored in the schematic section; with only a part number in the name it should be treated as a datasheet.

At just 33.5 KB, this PDF for the 2SD1623 is a short document listed as a schematic, though the part-number name suggests a compact datasheet.

The 2SD1622 PDF, 138 KB in size, sits among schematics, but a file named only by a semiconductor part number is very likely the device datasheet.

Indexed as a schematic, this 109 KB PDF is titled 2SD1621, a transistor part number, so treat it as a datasheet rather than a circuit diagram.

PDF of 77.6 KB named 2SD1620 and filed with schematics; the name carries nothing beyond the part number, which points to a component datasheet.

Covering the 2SD1619, this 123 KB PDF appears in the schematic category, although a part-number title indicates a datasheet.

Named for the 2SD1618 transistor, a 116 KB PDF listed as a schematic but most plausibly the part's datasheet.

A 107 KB PDF titled with the lowercase part number 2sd1565, catalogued as a schematic yet almost certainly a transistor datasheet.

Brief 29.4 KB PDF for the 2SD1555, held in the schematic section, though the name is just a part number and likely belongs to a datasheet.

Filed as a schematic, this 44.1 KB PDF carries the name 2SD1450 with an _E suffix that the name does not explain; the part number points to a datasheet.

Part number 2SD1424 with an unexplained _E suffix names this 41.4 KB PDF, indexed among schematics but most likely a datasheet for the transistor.

Datasheet-style PDF for the 2SD1423, 41.0 KB, stored as a schematic; the trailing _E in the name is not explained by the file itself.

A larger 213 KB PDF named 2SD1415A, listed under schematics but realistically the datasheet for that transistor; the A suffix denotes a variant of the base 2SD1415 part.

Titled in lowercase as 2sd1414, this 62.9 KB PDF is catalogued as a schematic, though a lone part number indicates a transistor datasheet.

Indexed as a schematic, the 217 KB PDF 2SD1412A most likely holds the datasheet for that transistor, where the A suffix marks a variant of the 2SD1412.