PDF sheet for the BC557 general-purpose PNP transistor, the name giving its minus 50 V and minus 100 mA limits, filed under schematics at 45.8 KB.

Second copy of the BC517 NPN Darlington transistor datasheet, rated 500 mA and 30 V according to the name, also 111 KB in PDF form.

A small 41.5 KB PDF for the 2SD1458, a part number in the Japanese JIS scheme where 2SD identifies an NPN low-frequency transistor.

Part-number document for the 2SJ561, stored as a 160 KB PDF and tagged as a schematic. In Japanese transistor numbering, 2SJ stands for a P-channel FET, so the content…

A small 13.7 KB PDF filed as a schematic but named for the 2SC1384, an NPN transistor under the JIS 2SC prefix, with UTC indicating the Unisonic Technologies version of…

Core board document for a Matrix 1.4 design paired with an R2 1000 watt amplifier, with the trailing 2 R likely meaning a 2 ohm load, in a 398 KB PDF.

Alpha and Omega Semiconductor datasheet for the AO4822A, a 299 KB PDF. This part is a dual N-channel MOSFET in an SO-8 package, a type widely used for load switching and…

Alpha and Omega Semiconductor datasheet for the AO4433, a P-channel MOSFET in SO-8 package, delivered as a 270 KB PDF.

Spanish tutorial on recognising components in a schematic, a 310 KB PDF intended as training rather than a diagram for a specific device.

PDF SMD codebook for mobile repair, 3.04 MB, listing marking codes found on small surface-mount parts.

PDF datasheet for the MPSA64, a PNP Darlington transistor that the name lists at -30 V and 800 mA.

PDF datasheet, 156 KB, covering ON Semiconductor NTMFS4943N, an N-channel power MOSFET in the SO-8FL package.

PDF datasheet for the 2SK2740, marked on the body as K2740, an N-channel MOSFET the file name rates at 600 V and 7 A.

Schematic in PDF form for a stereo preamplifier with a loudness control, a common DIY audio circuit that boosts bass and treble at low listening volume.

Schematic in PDF for a Sony power supply with part number 1-474-218-11, designed by Delta as model APS-272.

Schematic in PDF form for the Samsung power supply board BN44-00300A, with the name marked as tested, suggesting the drawing was checked against a real board.

Second copy of the 2SK3569 N-channel MOSFET datasheet, rated 600 V and 10 A according to the name, matching the other file at 156 KB in PDF format.

Datasheet in PDF form for the AOL1426, a part made by Alpha and Omega Semiconductor, 186 KB in size.

ON Semiconductor NTMFS4935N datasheet, a 173 KB PDF for an N-channel power MOSFET in the flat SO-8FL package common on laptop motherboards.

Schematic in a compact 464 KB PDF, named PA-1650-56LC, a code that appears to be a power adapter model number; the file name gives no brand or further details.

PDF schematic for a PA-1650-56LC adapter, a model code in the style of LiteOn's PA-1650 series, generally 65 W class laptop chargers.

PDF schematic of a LiteOn PA-1360-2 adapter, with no output rating given in this file name; a companion document lists it as 12 V 3 A, 36 W.

Datasheet in PDF form for the EMB20N03V, a MOSFET part from Excelliance MOS, as the file name indicates.

SMD Codebook in PDF form, 3.04 MB, a reference listing marking codes found on small surface-mount parts. It is not a schematic for a specific device.

The SMD Codebook in PDF form, 3.04 MB, is a reference guide that matches the short marking codes printed on small surface-mount parts to their full part numbers.