CV3998 wideband amplifier pentode
 |
This valve measures 44x19mm overall and has a B9A base. |
| Heater voltage | 6.3V |
| Heater current | 300mA |
| Max anode voltage (Ia=0) | 400V |
| Max operating anode voltage | 210V |
| Max anode dissipation | 3W |
| Max screen voltage (Ig2=0) | 400V |
| Max operating screen voltage | 175V |
| Max screen dissipation | 900mW |
| Max control grid -ve voltage | 50V |
| Max peak control grid -ve voltage | 100V |
| Max cathode current | 25mA |
| Max bulb temperature | 155C |
| Mutual conductance (Va=180, Vg2=150, Ia=13mA) | 16.5mA/V |
| Capacitances (with shield) | |
| Cag1 max | 0.03pF |
| Cin | 7.9pF |
| Cout | 2.9pF |
| Pin | Function |
| 1 | Cathode |
| 2 | Control grid |
| 3 | Cathode |
| 4 | Heater |
| 5 | Heater |
| 6 | i/c |
| 7 | Anode |
| 8 | Suppressor grid + shield |
| 9 | Screen grid |
