Here are Datasheets from 36 manufacturers of the 2N3906 transistor, you can select the one you need from the list and download the documentation.
Also in the “Specs” section you can read the technical specifications in English.
| Manufacturers | Names | |
|---|---|---|
 | ON Semiconductor |  |
 | Unisonic Technologies | |
 | Foshan Blue Rocket | |
 | Daya Electric Group | |
 | NJSEMI | |
 | Central Semiconductor | |
 | Jiangsu | |
 | SSC [Silicon Standard Corp.] | |
 | TRSYS [Transys Electronics] | |
 | Diodes Incorporated | |
 | STMicroelectronics | |
 | Diotec Semiconductor | |
 | MCC | |
 | ROHM | |
 | WINNERJOIN | |
 | ISC | |
 | SeCoS | |
 | KODENSHI KOREA CORP | |
 | Semtech Corporation | |
 | KOOCHIN | |
 | Weitron Technology | |
 | KEC(Korea Electronics) | |
 | ALLIED | |
 | Fairchild Semiconductor | |
 | KEXIN | |
 | CDIL | |
 | Vishay | |
 | First Silicon | |
 | DGNJDZ | |
 | PANJIT | |
 | TGS | |
 | HOTTECH | |
 | Micro Electronics | |
 | Dc Components | |
 | SEMTECH ELECTRONICS | |
 | NXP Semiconductors | |