12AU7
The 12AU7 (European type ECC82) is a twin medium-μ triode tube with a center-tapped filament for use in either 6.3 V / 300 mA or 12.6 V / 150 mA heater circuits. It is likely the first tube manufactured with a B9A (Noval) miniature 9-pin base (from 1946).
The 5814 is a high-rel version with increased heater current.
Tek part number: 154-0041-00, 154-0287-00
| Aged/Checked/Matched Pair Details | ||
|---|---|---|
| Used in | Tek Part# | S/N Range |
| Type C Plug-in (V3203,V4203) | 157-0025-00 | All |
| Type D Plug-in | 157-0049-00 | All |
Reference: