Revision 5 of a datasheet for the 4N25 optocoupler, a 281 KB PDF. The 4N25 is one of the oldest and most common phototransistor-output isolators, often found in power…

PDF datasheet, 44.7 KB, describing the 1T368 transistor, catalogued in the schematic section.

A 47.1 KB PDF covering the 1T365 transistor, placed in the schematic category of the index.

PDF covering the BF458 and BF459 transistors, a compact 49.2 KB file listed as a schematic but most likely a shared datasheet.