CV2983 / 3V4 pentode
 |
This valve measures 53x17mmm overall and has a B7G base. |
| Filament voltage | 1.4V |
| Filament current | 100mA |
| Max anode voltage | 100V |
| Max screen voltage | 100V |
| Max cathode current | 13mA |
| Mutual conductance * | 2.15mA/V |
| Anode current * | 9.5mA |
| Screen current * | 2.2mA |
| Capacitances (unscreened) | |
| Cag | 0.4pF |
| Cin | 5.5pF |
| Cout | 3.8pF |
*: At Va=Vg2=90, Vg1=-4.5
At a filament voltage of 1.4V, pins 1 and 7 are connected together as filament +ve, and the filament centre tap connected to filament -ve.
| Pin | Function |
| 1 | Filament -ve |
| 2 | Anode |
| 3 | Screen grid |
| 4 | n/c |
| 5 | Filament centre tap |
| 6 | Control grid |
| 7 | Filament +ve |
