Virtual Valve Museum

Virtual Valve Museum
HomeFull List

This is an archive website. It will not receive any updates, additions or corrections.

CV4031 double triode

Size This valve measures 53x17mm overall and has a B7G base.

The prototype of this valve is the CV858.

Heater voltage 6.3V
Heater current 0.45A
Max operating anode voltage 330V
Max anode voltage (Ia=0) 550V
Max anode dissipation (per section) 1.6W
Max heater to cathode voltage +/-100V
Max cathode current 25mA
Max bulb temperature 165C
Max shock (short duration) 500g
Max acceleration (continuous operation) 2.5g
Max operating frequency 250MHz
Mutual conductance (Va=100V; Vg-0V; Rk=50 ohms; Ia=9mA approx) 5.6mA/V
Anode impedance 6.3k ohm
Amplification factor 38

 

Pin Function
1 Anode 2
2 Anode 1
3 Heater
4 Heater
5 Grid 1
6 Grid 2
7 Cathode
CV4031