Virtual Valve Museum

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CV808 dual HF triode

Size This valve measures 54x17mm overall and has a B7G base

The prototype of this valve is 3A5.

Filament voltage 1.4 or 2.0V
Max anode voltage 150V
Max anode dissipation 1W
Mutual conductance * 2.60mA/V
Amplification factor * 15
Max frequency 50MHz
Capacitances (measured without screening can)
Cge 0.9pF
Cga 3.2pF
Cae 1.0pF


Pin Function
1 Filament -ve
2 Anode "
3 Grid "
4 Filament centre tap
5 Grid '
6 Anode '
7 Filament +ve