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CV4013 / 5670 reliable double triode

Size This valve measures 43x19mm overall and has a B9A base.


Heater voltage 6.3V
Heater current 350mA
Max anode voltage 330V
Max anode dissipation 1.35W
Max heater cathode voltage 100V
Max negative grid voltage -55V
Max series grid resistance 500k ohms
Max cathode current 18mA
Max grid current 3mA
Max bulb temperature 165C
Max altitude for full ratings 60,000 feet
Typical operating conditions
Anode voltage 150V
Anode current 8.2mA
Mutual conductance 5.5mA/V
Amplification factor 35

Above data refers to each section

Pin Function
1 Heater
2 Cathode "
3 Grid "
4 Anode "
5 Shield
6 Anode '
7 Grid '
8 Cathode '
9 Heater