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CV4043 reliable beam tetrode

Size This valve measures 65x20mm overall and has a B9A base.

See also CV4045 which is the fly-lead version. The prototype is CV2136.

Heater voltage 6.3V
Heater current 450mA
Max anode voltage 350V
Max screen voltage 310V
Max anode dissipation 13.2W
Max screen dissipation 2.1W
Max heater-cathode voltage +/-90V
Mutual conductance 4.1mA/V
Anode impedance 50k ohms
Max bulb temperature 250C
Max shock (short duration) 500g
Max acceleration (continuous operation) 2.5g


Pin Function
1 Control grid
2 Control grid
3 Cathode
4 Heater
5 Heater
6 n/c
7 Anode
8 Screen grid
9 Beam plates