Nokia 2220 handset schematic as a 737 KB PDF file. The name carries only the model number, with no revision or board identification.

Nokia 3100 circuit schematic in a compact 278 KB PDF. The name holds only the model number, without revision or board code, so confirm the drawing matches your phone.

BIOS and EC firmware for the Sony VAIO VPCEB23FM on the MBX-223 motherboard, with an M960 code in the name, packed in a 1.60 MB RAR.

Schematic of the IBM ThinkPad R32 laptop, provided as a 1.18 MB PDF. The name carries only the model, with no board number or revision noted.

Circuit diagram for the K42JR notebook motherboard in PDF format, 2.30 MB. The name holds only the model code, without a revision or board number, so the title block and…

F83VF motherboard schematic, revision 1.1 according to the r11 marking in the file name, delivered as a 1004 KB PDF.

Schematic for the Toshiba Satellite A135-S2686, built by Compal; the name ends at the LA prefix and does not give the full board number.

Sony schematic identified only by GD1B, which follows the Quanta project-code style, GD1 with a B suffix, though no MBX board number or model is given.

Repair guide for the ASUS K45DR, with the XY1 project code and board number DA0XY1MB6E0 in the name.

ASUS repair guide for the K43SV notebook in a 630 KB PDF, filed in the schematic category.

Schematic in PDF titled only N5110, 1.45 MB, with no brand, board number or revision given in the name.

Circuit diagram for the dv1300 based on the Quanta CT3 platform, revision 2A, in a 1.16 MB PDF.

Repair document for the ASUS X550CC notebook, provided as a 955 KB PDF and listed as a schematic.

Acer Aspire 4750 and 4750G schematic, supplied as a 1.24 MB PDF. The two model names suggest the drawing covers both the integrated graphics version and the G variant…

RAR archive of 1.24 MB identified only by J120H, the code that corresponds to the Samsung Galaxy J1 2016 model SM-J120H.

ZIP archive of 975 KB for the ASUS K42JK, with the 218 in the name read as the BIOS version.

Small RAR archive, about 813 KB, holding BIOS firmware for the Dell Inspiron 1750 laptop; no board number, chip type or version is mentioned in the name.

Generic BIOS archive in RAR format, 3.37 MB, whose name states nothing beyond the word BIOS.

PDF datasheet, 2.54 MB, for the Microchip PIC16F72 flash microcontroller with an 8-bit ADC and capture, compare and PWM module.

Datasheet for the Microchip PIC16C505, a small 14-pin microcontroller from the baseline PIC range, provided as a 1.18 MB PDF.

Small 113 KB PDF for the Arduino Ethernet Shield, most likely the board schematic or a brief reference sheet rather than a lengthy datasheet.

Datasheet for the Atmel ATxmega A1 series, the 100-pin members of the AVR XMEGA family.

Datasheet for the LM741, the classic general-purpose operational amplifier found in countless analog circuits, supplied as a 148 KB PDF.

Compact 64.3 KB PDF application note for the XR2206 function generator chip from Exar. It is intended as a practical reference for how the IC is wired in a working…

Application note for C51 parts, the common shorthand for 8051-family microcontrollers, provided as a 492 KB PDF.

Boardview for the Apple X3087 main logic board, part number 820-03597, with the 051-10340 schematic reference included in the name.

Zip archive called cls, about 10.7 MB, whose name reveals nothing about the device, board or contents.

Schematic PDF covering the SM4375 chip, with an extra SM43 tag in the name that appears to repeat the family code; it is the same size, 1.57 MB, as another SM4375 file…

Archive for a Lenovo laptop on Quanta board DA0PS8MB8G0, revision G. Quanta uses the DA0 prefix followed by the project code, here PS8, with the rev letter printed on…

Raw BIOS image in BIN format, 32 MB, with a name suggesting a working output image but giving no model, brand or board number.

Firmware dump called rodnoy, a transliterated Russian word meaning original or stock, which suggests a read of a factory chip; no model, brand or board number appears in…

Generic 16.0 MB binary named outimage, a name typical of output from an editing or building tool, with no device, brand or board information given.

Boardview for the Quanta H98 motherboard, board number DAH98MB38B0 at revision B. The DA prefix followed by a project code and MB is the standard Quanta naming pattern…

High-definition photo set of Inventec mainboard 6050A2371701, revision MB-A01, compressed in a 19.9 MB RAR archive, with no laptop brand or model given in the name.

Boardview for the ASUS ET2311I all-in-one motherboard, revision 1.3, packed in a ZIP file.

PDF reference for the 74HC595, an 8-bit shift register with storage latches and three-state outputs, at 367 KB, filed under schematics.

Datasheet covering the 2N3055, the classic NPN power transistor in a TO-3 metal case, provided as a 171 KB PDF.

Data sheet for the BC337 NPN general-purpose transistor, 29.8 KB PDF. It should give pinout, outline dimensions, absolute maximum ratings, gain classes and switching…

Datasheet-style PDF for the 5LP02SP, about 42.2 KB and placed in the schematic category.

Part reference for the 3N250, stored as a PDF of about 43.6 KB and catalogued in the schematic section.