The 2SA1621 is covered by this 194 KB PDF, listed among schematics but really describing one discrete semiconductor.

PDF component sheet, 184 KB, for the 2SA1620 transistor, filed as a schematic. Japanese JIS designations beginning with 2SA indicate a PNP bipolar device intended for…

Compact 39.7 KB PDF on the 2SB1370, indexed as a schematic though it documents one discrete device.

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.

Datasheet PDF for the 2SB1020A, 216 KB, filed in the schematic category. Under Japanese JIS designation 2SB means a PNP transistor intended for low-frequency circuits…

A 90.4 KB PDF describing the 2SA1423, identified only by part number. By Japanese JIS convention the 2SA prefix marks a PNP transistor.

PDF documentation, 195 KB, for the 2SB907. Japanese JIS numbering assigns the 2SB prefix to PNP transistors meant for low-frequency applications.

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

The 2SA1370 is a PNP transistor in the Japanese JIS numbering system, and this 138 KB PDF is named after it alone.

162 KB PDF for the 2SB772, a widely used PNP power transistor with a JIS part number, where 2SB stands for a low-frequency PNP device.

Lower-case named 2sa2018 PDF, 64.1 KB, referring to the JIS-numbered transistor 2SA2018, where the 2SA prefix denotes a PNP bipolar type.

Reference sheet in PDF form for the 2SA1969, a part number that under Japanese JIS rules denotes a PNP bipolar transistor.

PNP bipolar transistor 2SA1313, named under the Japanese JIS scheme, is documented in this 207 KB PDF.

Compact 40.8 KB PDF for the 2SA1257, indexed as a schematic though its name carries only a part number.

PDF reference sheet, 40.2 KB, for the 2SA1252 PNP transistor; 2SA is the JIS prefix used for that device type.

The 2SA1145 PNP transistor is documented in this 169 KB PDF. Its 2SA prefix follows the JIS standard for PNP bipolar semiconductors.

PDF sheet for the 2SA1832FT, a variant of the 2SA1832 whose FT suffix most likely denotes a specific package version, though the name does not explain it.

Documentation in PDF for the 2SA1832F, a suffixed version of the 2SA1832, 231 KB in size and indexed as a schematic.

The 2SA1091 is covered by this 334 KB PDF, the largest of this group, filed in the schematic category.

A 22.5 KB PDF datasheet for the 2SA1015 as produced by UTC, Unisonic Technologies, one of several makers of this part number.

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

A 193 KB PDF for the 2SA950, catalogued as a schematic but carrying a JIS semiconductor designation.

The 2SA940A is the subject of this 165 KB PDF, filed as a schematic though the name is a JIS transistor number.

The 2SA1765 PNP bipolar transistor, identified by its JIS 2SA prefix, is the subject of this 99.6 KB PDF catalogued as a schematic.

Datasheet for the 2N7002LT1 in a 98.6 KB PDF, placed in the schematic category. This appears to be the version without a revision tag, alongside a separate rev2 file.

A 121 KB PDF for the 2N6027, filed as a schematic but most likely the device datasheet. The name gives no manufacturer, package or revision.

The 2N5886 is covered by this 41.8 KB PDF, catalogued as a schematic but probably the component datasheet. The name states no maker, package or edition.

Small 33.9 KB PDF datasheet for the 2N3415, a JEDEC-registered 2N-series transistor, labelled as a schematic. The name gives only the part number.

PDF datasheet, 48.1 KB, for the part named 1T3797, indexed among schematics. The 1T prefix follows the Soviet designation pattern used for germanium transistors, though…

Short Spanish PDF on schematic nomenclature, 21.2 KB, not tied to any device. It likely explains the designator prefixes and symbols used in diagrams, such as R for…

Datasheet for the SG2524, a 107 KB PDF covering a member of the long-established 2524/3524 family of regulating pulse-width modulators.

MDU1512 datasheet as a 729 KB PDF. The MDU1512 is a MagnaChip N-channel power MOSFET in a compact package commonly placed in the switching stages of laptop voltage…

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.

Compact 42.5 KB PDF for the 2SD1824, carrying an E suffix in the name that is not otherwise explained.

Data for the 2SD2184, an NPN low-frequency bipolar transistor according to the Japanese 2SD numbering prefix, supplied as a 43.8 KB PDF.

Part documentation for the 2SD2579, provided as a PDF of 43.3 KB under the schematic heading.

Component data for the 2SD2130 NPN transistor, a PDF of about 209 KB. The name carries no board or device information; it is a part sheet following the Japanese 2SD…

Datasheet for the 2SD2117, filed as a schematic but actually a component specification in PDF form, about 67.5 KB.

At 242 KB, the 2SD2092 PDF is one of the larger files in this series and carries no information beyond the part number.

This 244 KB PDF covers the 2SD2075A; the trailing A marks a variant of the base 2SD2075 type, though the name does not say how it differs.