CV553 output beam tetrode
 |
This valve measures 84x32mm overall and has an octal base |
| Heater voltage | 25V |
| Heater current | 300mA |
| Anode voltage | 200V |
| Anode current | 50mA |
| Max screen current (zero signal) | 2mA |
| Max screen current (max signal) | 7mA |
| Max cathode current | 125mA |
| Pin | Function |
| 1 | n/c |
| 2 | Heater |
| 3 | Anode |
| 4 | Screen grid |
| 5 | Control grid |
| 6 | No pin |
| 7 | Heater |
| 8 | Cathode |
