|
CV2171 (A2087) noise diode
for frequencies up to 500MHz.
 |
The valve measures 52x17mm
overall and has a B7G 7-pin base. |
The valve has a tungsten filament
and so is a bright emitter.
| Normal filament voltage |
3.7 - 4.4V |
| Mean filament current
(Vf=3.7V) |
0.58A |
| Mean saturated anode current
(Vf=3.7V) |
5mA |
| Mean filament current
(Vf=4.4V) |
0.64A |
| Mean saturated anode current
(Vf=4.4V) |
20mA |
| Max filament voltage |
4.8V |
| Max anode voltage |
200V |
| Max saturated anode current |
20mA |
| Max anode dissipation |
2W |
| Capacitance, anode to
filament |
0.8pF |
| Capacitance, anode to
all |
2.3pF |
The specifications of the valve
say that saturated emission of 5mA should be obtainable at a maximum anode
voltage of 40V. At 20mA saturation, the valve life is reduced to 100-300
hours. The value of saturated anode current varies with filament voltage.
The prototype of this valve was VX3120.
| Pin |
Function |
| 1 |
A |
| 2 |
Getter support |
| 3 |
F |
| 4 |
F |
| 5 |
A |
| 6 |
n/c |
| 7 |
Filament spring |
|
