STC CV499 / 5B/256M beam
tetrode
 |
This valve measures 89x30mm
overall and has a B8G base. |
| Heater voltage |
6.3V |
| Heater current |
300mA |
| Max anode voltage |
600V |
| Max screen voltage |
300V |
| Max anode dissipation |
25W |
| Max anode current |
200mA |
| Max screen dissipation |
4.5W |
| Mutual conductance * |
6.0mA/V |
| Inner amplification factor
* |
9.0 |
| Max frequency for above
ratings |
60MHz |
| Capacitances |
| Cag |
0.13pF |
| Cge |
12.0pF |
| Cae |
8.5pF |
*: At Va=300, Vg2=250, Ia=72mA
| Pin |
Function |
| 1 |
Heater |
| 2 |
Anode |
| 3 |
Screen grid |
| 4 |
Internal shield |
| 5 |
Control grid |
| 6 |
Control grid |
| 7 |
Cathode and beam plates |
| 8 |
Heater |
|
 |
