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CV2721 LF pentode

Size This valve measures 81x19mm overall and has a B9A base.


Heater voltage 6.3V
Heater current 1.05A
Max anode voltage 330V
Max anode voltage (Ia=0) 550V
Max peak anode voltage 7kV
Max screen voltage 330V
Max screen voltage (Ig2=0) 550V
Max anode dissipation 8.8W
Max screen dissipation 5W
Max total anode and screen dissipation 11W
Max cathode current 200mA
Heater cathode voltage 110V
Mutual conductance (Va=Vg2=250; Ia=32mA) 4.6mA/V
Cge 15pF
Cae 6pF
Cag max 1pF


Pin Function
1 i/c
2 Control grid
3 Cathode
4 Heater
5 Heater
6 i/c
7 i/c
8 Screen grid
9 Suppressor grid
TC Anode

This file was last modified 23:10:24, Wednesday February 23, 2022