Circuit diagrams for the Topstar D23I board, revision B, delivered as a 1.11 MB PDF. Beyond the model code and revision, the file name carries no chipset, CPU or ODM…

BIOS firmware for a G41M-VS3 desktop motherboard, an Intel G41 chipset board; the name gives no brand or version.

Schematics for the Compal LA-8971P mainboard, early revision R0.1, compressed into a 1.25 MB RAR file. The name gives no laptop model, only the Compal ODM board code.

Compal LA-8714P schematics, revision R0.3, packed into a compact 827 KB RAR archive. Only the ODM board number and an engineering revision are given, so the laptop model…

Schematics archive for a device labelled A300, packed as a 1.14 MB RAR without a brand in the name.

Top-side placement drawing in PDF for the Xiaomi M1s mainboard, P3 build. The sheet lists component outlines and reference designators for the upper PCB face and…

A third copy of the Chunghwa CLAA154WB03A panel EDID, kept as a separate 256-byte file.

Firmware archive for a Quanta ZRW project board, DA0ZRWMB6G0 revision G, labelled no graphic, meaning a version without discrete GPU, with an Intel Core i5 whose S-spec…

BIOS firmware for the ASUS X550CA, labelled as the X550CC main board with discrete VGA, archived as RAR.

Samsung SM-A910F disassembly document in PDF form, 1.51 MB. The name indicates step-by-step teardown instructions rather than circuit diagrams, covering removal of the…

Schematic PDF of 3.39 MB carrying only a team tag in its name. The name does not state the device, brand or board number, so check the title block inside before relying…

Service schematic PDF for the Samsung Galaxy J7 handset with model code SM-J730FM, 3.34 MB in size.

Datasheet for the BTA16-600BW, a 16 A, 600 V triac in the insulated-tab BTA family, the B and W indicating its gate sensitivity and snubberless rating class.

Datasheet for the RN-42 Bluetooth module, document version 2.32r, originally from Roving Networks and later Microchip.

Boardview file for the ASUS X453MA motherboard, revision 2.0, in the .fz format at about 104 KB.

Schematic in PDF for the ThinkPad SL410, with the name listing the board codes GC2A-0622, GC1A and CG1B, likely covering related board variants.

Schematic for an IBM-branded X201i, judging by the file name, supplied as a 1.62 MB PDF with no board number or revision given.

Sony board MBX-226 schematic, labelled M9A0 with an MP suffix that usually marks a mass-production release.

Circuit schematic in PDF for Sony board MBX-202, identified by the M790 code, about 788 KB.

Firmware dump for a B-Vision display or TV board labelled Tornado, model DT2012B, read from an EN25QH16 serial flash chip.

A 4 MB raw BIOS image for the ASUS K52F, marked in the name as tested and working. No board revision or BIOS version is given, so check the motherboard markings before…

Raw 8 MB BIOS dump for the ASUS X555LD notebook, without a board revision or firmware version in the name.

Circuit diagram for the Lenovo ThinkPad R61 on the DAV3 GENBU5W board design, revision 5.13, in PDF form at about 1.28 MB.

Family datasheet for the Microchip PIC16F87x microcontrollers, a 3.74 MB PDF covering the flash parts in this group such as the 28- and 40-pin variants, indicated by the…

Full family datasheet, 1.66 MB PDF, for the tiny25, tiny45 and tiny85, consistent with the Atmel AVR ATtiny25/45/85 8-pin microcontrollers.

Full datasheet covering the ATmega325, ATmega3250, ATmega645 and ATmega6450 AVR microcontrollers, a 2.69 MB PDF.

Combined datasheet for the Atmel ATmega48, ATmega88 and ATmega168 AVR microcontrollers, which share one pin-compatible family and differ mainly in flash, EEPROM and SRAM…

Datasheet for the ULN2004, a seven-channel Darlington transistor array with built-in clamp diodes, part of the ULN200x family used to drive relays, solenoids, lamps and…

Datasheet for the LM337, an adjustable three-terminal negative voltage regulator, the counterpart of the positive LM317.

Atmel datasheet for the AT89C55WD, an 8051-compatible microcontroller with 20 KB of flash, 256 bytes of RAM, three timers and a watchdog timer, as reflected by the WD…

Datasheet in PDF (236 KB) for the TL081, a single JFET-input operational amplifier widely found in audio gear, filters, power supply control loops and instrumentation.

Large 202 MB archive for an HP mainboard numbered 6050A2555201, revision A02, following the Inventec numbering pattern that begins with 6050A.

Archive of high-resolution board photos for the Inventec motherboard 6050A2477601, revision A02.

Boardview data for the Gigabyte H410M H V3 desktop motherboard, in a ZIP archive of 784 KB.

Reference sheet in PDF format, 236 KB, describing LVDS connector pinouts. The name names no device or panel model, so treat it as a generic guide to low-voltage…

Specification sheet in PDF format, 43.9 KB, for the 2SD2177A, the A-suffixed variant of the 2SD2177, with an additional _E tag in the name.

Datasheet covering the 4N35 to 4N37 family of optocouplers, stored as a 276 KB PDF and catalogued as a schematic.

Compact 38 KB PDF datasheet for the 2SD2142K, an NPN transistor named in the Japanese JIS scheme, where the trailing letter marks a specific package or variant.

Small 42.2 KB PDF filed as a schematic for the 3N256 part. Under the JEDEC system the 3N prefix marks a registered device with four leads, and the same size across 3N253…

The 2SK2740 transistor is the subject of this 143 KB PDF, filed as a schematic even though the name points to a component datasheet.