CV4031 double triode
 |
This valve measures 53x17mm overall and has a B7G base. |
The prototype of this valve is the CV858.
| Heater voltage | 6.3V | |
| Heater current | 0.45A | |
| Max operating anode voltage | 330V | |
| Max anode voltage (Ia=0) | 550V | |
| Max anode dissipation (per section) | 1.6W | |
| Max heater to cathode voltage | +/-100V | |
| Max cathode current | 25mA | |
| Max bulb temperature | 165C | |
| Max shock (short duration) | 500g | |
| Max acceleration (continuous operation) | 2.5g | |
| Max operating frequency | 250MHz | |
| Mutual conductance | (Va=100V; Vg-0V; Rk=50 ohms; Ia=9mA approx) | 5.6mA/V |
| Anode impedance | 6.3k ohm | |
| Amplification factor | 38 | |
| Pin | Function |
| 1 | Anode 2 |
| 2 | Anode 1 |
| 3 | Heater |
| 4 | Heater |
| 5 | Grid 1 |
| 6 | Grid 2 |
| 7 | Cathode |
