Datasheet PDF, 64.6 KB, for the KA7500B, a PWM control IC from the KA7500 series and a TL494-style design widely found in computer power supplies.

The 2SD2285 is documented in this 128 KB PDF. Its JIS part number, with the 2SD prefix, places it among NPN transistors intended for low-frequency circuits such as…

The name of this 97.3 KB PDF gives nothing beyond 2SJ277, a JIS-style designation in which 2SJ marks a P-channel FET.

Only the part number 2SJ275 appears in the name of this 97.0 KB PDF. That code follows Japanese JIS numbering, where 2SJ indicates a P-channel field-effect transistor…

Network section schematic for the Samsung SM-A21s, a smaller 1.93 MB PDF. It covers the cellular radio part of the board, typically the RF transceiver, power amplifiers…

Audio Pro Ace Bass B2-40 subwoofer service manual in PDF form, about 1.96 MB, as indicated by the sub and sm tags.

Schematic PDF from Sony for the MEX-GS610BE, MEX-GS610BT and MEX-N6050BT car receivers, marked version 1.0 and around 8.47 MB.

Network section of the Samsung SM-A05 schematic, packed into a 6.27 MB PDF. It covers the radio part of the phone: transceiver, power amplifier, antenna switch, filters…

Network section of a smartphone schematic in PDF, part of a sectioned set of around 4.78 MB per page; the device model is not given in the name.

Schematic in PDF form labelled safari std, a name that in DIY audio circles usually refers to a Safari power amplifier design, standard version, though the file name…

Top-side PCB print for an R2 amplifier rated 1500 watts into 2 ohms, with the Indonesian note langsung print meaning ready to print directly.

Version 1.0 service schematic for the Sony MEX-BT5100 car stereo with Bluetooth, delivered as a 6.42 MB PDF.

Service schematic in PDF form for the Ahuja SSA 250, a model in the Ahuja range of public address amplifiers, size 929 KB.

Audio schematic for Apple board 820-2364, also numbered 051-7615 with code 14000, compressed into a 146 KB RAR.

Network (cellular RF) portion of the Samsung SM-A20S schematic in PDF form, 4.63 MB. The pages cover the radio front end, power amplifiers, antenna switches and the…

Compact 311 KB PDF schematic whose name suggests a bipolar transistor design, probably an audio amplifier, though the label 5_5bipolar_msg is cryptic and gives no brand…

Sony schematic in PDF format for the HCD-SHAKE7, the main unit of a Shake series hi-fi audio system, document version 1.2 and roughly 6.03 MB.

Sheet for the TIP31 NPN and TIP32 PNP complementary power transistor pair, with the name stating 100 V and 3 A ratings; the PDF is 198 KB and listed under schematics.

Datasheet in PDF for the PZT2907A, a PNP small-signal transistor the file name rates at 60 V.

Sony HT-S500RF schematic delivered as a 5.85 MB PDF, covering the home theatre system named in the file.

Sony service schematic in PDF form covering two car audio head units, the MEX-M71BT and the MEX-N5200BT, about 6.81 MB in size.

Sony LCD television schematic for the KDL-32V2000 with the 40 and 46 inch versions of the same series, on the WAX2 chassis, as a 13.6 MB PDF.

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

Vivo Y83 phone schematic material in a 631 KB RAR archive containing a PDF, named after a fault where the handset was heavily dropped and then stopped sending messages.

Partial schematic for the Samsung SM-A720, Galaxy A7 2017, focused on the microphone, speaker and buzzer circuits, supplied as a 1.42 MB PDF.