| Equivalent | 6AU6, 6AU6W, 6136, 7543 |
| Similar type | |
| With different Vf | HF94 = 12AU6 LF94 = 4AU6 XF94 = 3AU6 |
| CV number | CV2524, CV2990, CV4023, CV5896, CV8210, CV8249, CV8403, CV9854, |
| Swedish Mil.nr. |
M2462-449, M2462-458C M2462-505 |
| Tektronix part no |
154-0022-00 154-0284-00 157-0059-00 |
| Hewlett-Packard part no. | 1923-0021 |
