CV2411 output pentode
 |
This valve measures 65x19mm overall and has a B9A base |
| Heater voltage | 12.6V |
| Heater current | 150mA |
| Max anode voltage (Ia=0) (a) | 550V |
| Max screen voltage (Ig2=0) (a) | 550V |
| Max anode operating voltage (a) | 275V |
| Max screen operating voltage (a) | 275V |
| Max anode dissipation (a) | 9.5W |
| Max screen dissipation (a) | 2.0W |
| Anode current (b) | 27mA |
| Mutual conductance (b) | 3.2mA/V |
| Inner amplification factor (b) | 8.5 |
| Max cathode current (a) | 42mA |
| Max heater-cathode voltage (a) | 65V |
| Power output (d) | 80mW |
| Capacitances (c) | |
| Cag max | 0.75pF |
| Cin | 7.5pF |
| Cout | 6.2pF |
(a) Absolute maximum values
(b) Measured at Va=Vg2=250V and Rk=550 ohms
(c) measured without a metal screen
(d) Measured at Va=Vg2=50V, Vg1=3.3V, Ra=12.5k ohms and V in = 1.8V r.m.s.
| Pin | Function |
| 1 | i/c |
| 2 | Control grid |
| 3 | Cathode + suppressor grid |
| 4 | Heater |
| 5 | Heater |
| 6 | i/c |
| 7 | Anode |
| 8 | Screen grid |
| 9 | Heater centre tap |
The valve carries the markings 'Ef0 R7L' and the letter 'G'
