NT20 triode
 |
This valve measures 122x45mm
overall and has a 4 pin base. |
| Filament voltage |
6V |
| Filament current |
250mA |
| Max anode voltage |
250V |
| Amplification factor * |
6 |
| Mutual conductance * |
3.2mA/V min |
| Anode impedance * |
2k ohms |
| Average anode current
* |
55mA |
| Capacitances |
| Cga max |
9pF |
*: At Va=150, Vg=0.
| Pin |
Function |
| 1 |
Anode |
| 2 |
Grid |
| 3 |
Filament |
| 4 |
Filament |
|
|
