Spanish microelectronics course in PDF form, 4.14 MB, without any specific device, brand or board named.

Scanned PDF of the September 2006 issue of AudioXpress, the audio electronics magazine, filed here under schematics.

Spanish electronics course PDF focused on tablets, about 2.73 MB, filed under schematics though it reads as training material.

A 41.5 KB PDF covering the 2SC4808, a part number in the JIS 2SC series used for NPN bipolar transistors.

Data sheet material for the 2SC3772 NPN transistor in a 128 KB PDF, filed among schematics. The 2SC prefix follows the JIS convention for Japanese bipolar transistors.

Around 173 KB of PDF datasheet material for the 2SC5307, an NPN bipolar transistor in the Japanese JIS 2SC series. The name gives no maker, package or intended circuit.

2N4123 document carrying an RE suffix, provided as a 162 KB PDF and indexed in the schematic category.

PDF datasheet material for the 1SS382, 67.6 KB, indexed among schematics. The name carries only the part number and an underscore, without any device model, brand or…

Spanish PDF guide on using a soldering iron (cautín), 495 KB, with no device or model involved. It is training material for basic hand soldering rather than a schematic.

Fourth chapter of a Spanish cellular-phone course, dealing with cloning or unlocking, saved as an 863 KB PDF.

Compact 819 KB zip of schematic material for the model code A245F, with no further revision or board details in the name.

PDF document covering the Intersil ISL6259 battery charger controller, labelled as charging IC material.

PDF documentation for the Nuvoton NPCE985LA0DX embedded controller, part of the NPCE985 family, stored as a 1.23 MB RAR.

PDF reference document named TPS4202, around 1 MB. The name gives only a part designation with no device or board, so it is most likely a datasheet or application…

Portuguese-language PDF guide whose title translates to How to Test Electronic Components, 620 KB in size.

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…

The 2SK1468 transistor is covered by this 92.5 KB PDF, categorised as a schematic though the name is purely a part number.

A PDF for the 2SC5464FT, 125 KB, indexed as a schematic. The FT suffix appears to denote a specific package or variant of the 2SC5464 NPN transistor, but the name does…

Small 35.7 KB PDF for the 2SB1073; the _E suffix in the name is not explained and may mark a language edition or document version.

The 2SA1123 PNP transistor is the subject of this 40.5 KB PDF, whose name carries an _E suffix.

Named 1T378A, this 49.4 KB PDF is listed under schematics. The A suffix denotes a variant of the 1T378 code and may carry different ratings from the base part.

PDF document of 226 KB with the short, uninformative name 22ria, filed in the schematics category.

English PDF titled basic electronics, 583 KB, not tied to any device or board. It is reference and training material rather than a service schematic.

Spanish document about the diode, a 373 KB PDF of component theory rather than a schematic for a specific device. The name gives no product or board number.

PDF named RTS545X, which refers to a Realtek RTS545x series chip, commonly a USB Type-C power delivery controller; the name gives no board or device.

RAR archive holding schematic PDF material, named with A1386 and K19; the name carries little else, and no brand or board number is stated.

Basic electronics material in Spanish, with the word electronics misspelled in the name.

Samsung troubleshooting guide for the Galaxy J7 model SM-J700H in PDF. TSHOO documents in Samsung service material normally cover fault-finding procedures with block…

Reference material for the 3SK272 in a 30.2 KB PDF, filed under schematics. The name carries no detail other than the type number.

PDF datasheet material for the 2SK2719, 325 KB, labelled as a schematic in the index. The 2SK designation is the Japanese JIS code for an N-channel field-effect…

At 138 KB, this PDF is named for the 2SC4414 and stored under schematics, though the name is a transistor part number.

PDF datasheet material for the 1SS397, sized at 77.7 KB and indexed under the schematic type.

At 83.3 KB, the PDF named 19MT050XF is filed as a schematic, yet its name reads like a power semiconductor module part number, not a device board.

A 98.4 KB PDF named 16TTS_FP and filed among schematics. The name holds no device, board number or revision, only a component code with an FP suffix that probably…

Spanish-language PDF from a master course in microelectronics, apparently part one of a series, about 904 KB.

Portuguese PDF on the main rails or networks of a smartphone, converted from another format, 253 KB, with no model or brand named.

Training PDF about SMD surface-mount components, numbered 31 in what looks like a course series, about 998 KB in size.

Lesson nine of a Spanish phone-repair course on network unlocking and IMEI-based release, saved as a 619 KB PDF.

Training course material on basic electronics repair, 7.26 MB PDF, catalogued with schematics although it is an educational guide rather than a board diagram.

PDF datasheet for the 2SA1338, a part whose 2SA prefix marks it as a PNP transistor intended for high-frequency service under the Japanese JIS convention.