Datasheet for the 4N25 phototransistor optocoupler, a classic six-pin DIP isolator used in power supplies, interfaces and control circuits.

Dell BIOS update utility for the Latitude 5430, version 1.42.0, packaged as a Windows executable.

Zip package of flash tools for the SR-1515HD receiver, roughly 3.44 MB. It most likely contains the loader utility used to push firmware to the box over a serial or USB…

PDF schematic for the SM6375 chip, carrying an SM63 family suffix in its name and measuring 1.51 MB. The handset or board it came from is not given.

Schematic in PDF, 1.96 MB, centred on the SM7150 processor according to its name; the phone model and board revision are not stated.

PDF schematic section for the SM6150 processor, also tagged SM61, about 1.26 MB, with no device model specified.

Zipped BIOS image named 996F1P07, roughly 1.14 MB, with no brand, model or board number given, so the target device must be identified from other sources.

Firmware backup labelled gwtn156-7, with the Spanish word respaldo meaning backup, in a 16 MB raw image.

Boardview for an ASUS GTX760 video card, with no board code or revision given in the name.

BIOS firmware package for the HP EliteBook Folio 1040 G2 business ultrabook, supplied as a RAR archive of about 6 MB.

BIOS archive for motherboard 6050A2848001-MB-A01, meaning board 6050A2848001 at revision A01.

Component documentation for the 2SD2257 transistor, in PDF form at 180 KB. Although the index lists it as a schematic, the file name points to a single discrete part…

Covers the 2SD2218 NPN transistor in a 122 KB PDF filed under the schematic category. Only the transistor type appears in the name.

A 41.4 KB PDF covering the 5HP02C part, indexed under schematics. Only the component code is present in the name, with C most likely denoting the package type.

The 2SD2079 PDF, 219 KB in size, is indexed as a schematic yet corresponds to a single discrete component.

The name offers nothing beyond the 2SD2500 part number, and the 250 KB PDF is almost certainly that transistor's datasheet.

The 2SD1683 is the subject of this 146 KB PDF, which is catalogued as a schematic although the name is a transistor part number.

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

Here the 2SK3285 is documented in a 48.6 KB PDF, placed in the index's schematic section.

Brief 34.7 KB PDF for the 2sk2581 transistor, catalogued as a schematic. JIS naming assigns 2SK to N-channel field-effect transistors, and the name gives no further…

Brief PDF, about 30.2 KB, for the 2SK2509, a JIS-designated N-channel FET as indicated by its 2SK prefix.

Small 33.8 KB PDF on the 2sk2495, a part number in the JIS N-channel FET series marked by the 2SK prefix.

For the 2SK2313 transistor, this 419 KB PDF is filed as a schematic but is expected to be a datasheet, since 2SK is the JIS prefix for N-channel FETs.

The 2SK2312 is covered by this 391 KB PDF, catalogued under schematics yet most likely a component datasheet.

The file name gives nothing beyond 2SK2233, a JIS/EIAJ designation whose 2SK prefix marks an N-channel field-effect transistor.

Component documentation in a 114 KB PDF for the 2SK2011. Parts with the 2SK prefix are N-channel field-effect transistors under the Japanese numbering standard, so this…

A 96.5 KB PDF identified only as 2SK1889 and filed under schematics. Under the JIS scheme the 2SK prefix indicates an N-channel field-effect transistor, so the file most…

PDF datasheet, 173 KB, covering the 2SK1740. The 2SK series in JIS nomenclature consists of N-channel FETs, and this document is likely its specification sheet.

PDF documentation for the 2SK1731 discrete semiconductor, roughly 90 KB in size. Japanese 2SK numbering identifies it as an N-channel FET; the name says nothing about…

At 120 KB, this PDF is a slightly larger reference for the 2SK1728. Japanese JIS/JEITA numbering assigns the 2SK series to N-channel field-effect transistors, so expect…

For the 2SK1470, a Japanese-coded N-channel field-effect transistor, this 97.9 KB PDF serves as component reference material even though it sits in the schematic…

Catalogued under schematics, this 112 KB PDF is tied to the 2SK1450 and is most likely a component data sheet.

Reference document for the 2SK1436 transistor, supplied as a 105 KB PDF and listed under schematics.

PDF covering the 2SK1104, an N-channel FET identified by the 2SK prefix of the Japanese semiconductor numbering system.

Small 35.2 KB PDF identified only by the part number 2SK665, a designation from the Japanese 2SK family of N-channel FETs, so the content is most likely a component…

Datasheet-type PDF for the 2SK536, 60.8 KB, catalogued under schematics. Under the Japanese JIS system the 2SK designation means an N-channel FET, so the content…

Covering the 2SJ589LS, this 33.2 KB PDF is catalogued as a schematic, though the name points to a component datasheet.

The 2SJ377 is covered by this 415 KB PDF, a component datasheet filed in the schematic category.

Component sheet for the 2SJ307, delivered as a 115 KB PDF and indexed under schematics. Only the part number is given in the name.

Datasheet for the 2SD1187 transistor in PDF form, 227 KB, which is larger than most sheets in this series and may include more curves or package options.