A 304 KB PDF for the 2N4400 with an RE suffix, which may denote a revised or alternate edition of the document, though the name leaves it undefined.

Shared PDF covering the 2N4400 and 2N4401, 48.6 KB, sorted into the schematic category but most likely a combined manufacturer datasheet.

Component documentation for the 2N4400 transistor, stored as a compact 67.6 KB PDF and filed in the index under the schematic category even though the name points to a…