Nokia 1100 schematic, marked as version 3 in the name, in an 804 KB PDF. The version tag likely refers to the document or board revision, so check it matches the phone…

Schematic PDF for the Z37S board, roughly 2.34 MB, with no brand or revision indicated in the name.

Quanta ZB3 schematic shared by the Acer Aspire 3660 and TravelMate 2460, revision 1A, in a 1.25 MB PDF.

Quanta CT1 laptop mainboard schematic at revision R1A, presented as a 926 KB PDF file. The CT1 code belongs to the Quanta project-numbering scheme, used on boards this…

Product specification chapter, part 2 of the Samsung GT-S7580 and GT-S7582 service documentation, as a 567 KB PDF.

Firmware archive whose name contains only the numbers 5010 and 4007, which do not identify a brand, model or board with certainty, so the contents must be inspected…

PDF datasheet for the Microchip PIC16F628 flash microcontroller, 1.68 MB in size. It describes the pin functions, internal oscillator, comparators, USART, timers…

Combined datasheet for the Microchip PIC16C63A, PIC16C65B, PIC16C73B and PIC16C74B microcontrollers, provided as a 2.18 MB PDF.

Datasheet for the MQ2 gas sensor, a heated semiconductor sensor sensitive to combustible gases such as LPG, propane, hydrogen, smoke and similar vapours.

AT command reference for the SIM900 GSM/GPRS module, provided as a 1.53 MB PDF. The manual lists the commands used to control calls, SMS, network registration, GPRS data…

PDF document of 422 KB on the MMC (MultiMediaCard) memory card format, with no manufacturer or revision given in the name.

A 91 KB PDF datasheet covering the AT89C51, the Atmel 8051-compatible microcontroller with flash program memory that turns up in many older industrial and consumer…

PDF datasheet (337 KB) for the AD7533, a 10-bit multiplying DAC from Analog Devices often used for programmable gain, attenuation and voltage setting in older…

Small zip archive of about 87 KB holding a settings package for Enigma2 receivers, with a numeric identifier in the name.

Backup binary taken from a board labelled LA-G07DP, which follows Compal's LA-xxxxP numbering, though the name gives no laptop brand or model.

Schematic for a Quanta-designed laptop motherboard with project code BQ2L, supplied as a 1.20 MB PDF.

Android application package for SmartTube, beta version 32.54, universal build, 33.3 MB. It is not repair documentation.

PDF sheet of about 41.1 KB for the 5LN02M, filed under schematics. Only the part code appears in the name; by the naming pattern LN likely marks the N-channel MOSFET…

PDF datasheet for the 4N35 optocoupler, marked as revision 2 in the file name and about 276 KB in size.

Listed under schematics, the 2SD2100 PDF of 144 KB is in practice a reference sheet for a single discrete part.

Only the part number 2SD2088 appears in the name of this 171 KB PDF, so treat it as the datasheet for that transistor.

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

The 2SK2294 is the subject of this 140 KB PDF, catalogued as a schematic but in substance most likely a datasheet, as 2SK marks N-channel field-effect transistors under…

Listed as a schematic, the 95.7 KB PDF bearing part number 2SK2160 is most likely the datasheet for an N-channel field-effect transistor.

Datasheet in PDF format for the 2SK615, filed as a schematic and sized at 34.3 KB. The 2SK prefix follows the Japanese JIS convention for N-channel FETs, so the content…

PDF datasheet for the 2SK444, sized 92.5 KB and listed in the schematic category. The 2SK prefix places it in the Japanese JIS series of N-channel FETs, so the document…

Reference sheet for the 2SK315, stored as a 176 KB PDF and catalogued as a schematic. The JIS 2SK prefix denotes an N-channel field-effect transistor, so the document…

Filed as a schematic, this 372 KB PDF named 2SJ465 most likely holds the full datasheet for a P-channel field-effect transistor, since that is what the 2SJ prefix means…

Transistor documentation for the 2SJ439, stored as a 389 KB PDF and catalogued as a schematic.

PDF documentation, 108 KB, for the 2SJ416, a P-channel field-effect transistor according to the Japanese 2SJ naming convention.

This 100 KB PDF, catalogued as a schematic, bears only the designation 2SJ268. Under the JIS convention, 2SJ marks a P-channel FET, so the file most probably holds the…

The 2SD1244 with an _E suffix is the subject of this 44.8 KB PDF, placed in the schematic category.

The 2SD863 transistor datasheet, a 96 KB PDF with no maker named in the file title. JIS numbering identifies 2SD devices as NPN transistors aimed at low-frequency…

A compact 24.0 KB PDF titled only with the part number 2SC4432, filed under schematics.

Component documentation for the 2SC4425 in a 102 KB PDF. The JIS prefix 2SC denotes an NPN bipolar transistor, which points to datasheet content rather than a device…

PDF documentation for the 2SC5149, the largest of this batch at 193 KB. Under the Japanese JIS scheme the 2SC prefix denotes an NPN bipolar transistor, so the content…

Compact 32.8 KB PDF labelled 2SC5645, filed among schematics but most probably a single-part datasheet for that transistor.

The largest of this group at 465 KB, the PDF named 2SC4394 is most likely a full datasheet for that transistor rather than a board schematic, despite its index label.

The 2SC4249 transistor is the subject of this 263 KB PDF, filed under schematics. The name carries the part number alone, so maker and revision are not stated.

Transistor datasheet PDF for the 2SC5519, 47.0 KB, listed in the schematic category. The JIS 2SC prefix marks it as an NPN bipolar device; no other information appears…