Component datasheet for the 2SD2137, a part from the Japanese 2SD series, which designates NPN bipolar transistors intended for low-frequency use.

Datasheet in PDF format for the BD244C, judging by the name, a small 137 KB document. BD244-series parts are generally PNP power transistors in TO-220 packages, and the…

Component datasheet in PDF format, about 1.26 MB, whose name suggests the DTC115EE series, a family of pre-biased digital transistors with built-in resistors.

Manufacturer datasheet for the 2SK3569, a discrete transistor part number in the Japanese 2SK series, which denotes N-channel field-effect devices.

Datasheet for the 4N25 phototransistor optocoupler, a classic six-pin DIP isolator used in power supplies, interfaces and control circuits.

Alpha and Omega Semiconductor datasheet for the AO4466, an SO-8 MOSFET, provided as a 324 KB PDF.

Datasheet for the BD135 transistor in a 51.0 KB PDF, likely the same family document that also covers related types in the series.

Datasheet for the TIP41C NPN and TIP42C PNP complementary power transistors, a 195 KB PDF.

Toshiba datasheet for the TPCA8064-H power MOSFET, an English edition dated in the name as 2014-02-07, 291 KB PDF.