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CV850 RF pentode

Size This valve measures 44x17mm overall and has a B7G base.

See also CV2020 which is a modified version of this valve

Heater voltage 6.3V
Heater current 175mA
Max anode voltage 200V
Max anode dissipation 1.85W
Max cathode current 20mA
Max screen voltage 155V
Max screen dissipation 0.55W
Max heater-cathode voltage 100V
Mutual conductance * 5.0mA/V
Anode impedance * 340k ohms
Max operating frequency 400MHz
Capacitances (with close fitting metal can)
Cag1 max 0.020pF
Cae nom 3.0pF
Cge nom 3.9pF
*: At Va=Vg2=120V , Vg1=-2V


Pin Function
1 Control grid
2 Cathode and suppressor grid
3 Heater
4 Heater
5 Anode
6 Screen grid
7 Cathode and suppressor grid