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CV4081 reliable low-noise RF triode

Size This valve measures 35x17mm overall and has a B7G/F wire lead base


Heater voltage 6.3V
Heater current 370mA
Max anode voltage 200V
Max grid current 3mA
Max negative grid voltage -20V
Max cathode current 20mA
Max bulb temperature 180C
Max heater-cathode voltage 100V
Max grid resistance

Fixed bias 100k ohms

Auto bias 500k ohms

Mutual conductance * 14mA/V
Amplification factor * 52
Anode impedance * 4150 ohms
Nominal noise factor 1.4db
Max acceleration (continuous operation) 2.5g
Max shock (short duration) 500g

*: At Va=180, Ra=3.3k ohms, Rk=68 ohms, Ia=15.5mA


Lead Function
1 Control grid
2 Cathode
3 Heater
4 Heater
5 Cathode
6 Control grid
7 Anode

This file was last modified 23:10:29, Wednesday February 23, 2022